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Home > TX Providers > Interventional Cardiologists

Dr. John Fierros Canales, MD

(2 Ratings)

Specializes in: Interventional Cardiology and Adult Cardiology

Washington University in St. Louis School of Medicine

Professional interests include: angioplasty, transesophageal echocardiography (TEE), transcatheter aortic valve replacement (TAVR), and more.

1139 E Sonterra Boulevard Suite 520
San Antonio, TX 78258

(210) 490-6000

Dr. John Fierros Canales, MD is an interventional cardiologist in San Antonio, TX specializing in interventional cardiology and adult cardiology. He graduated from Washington University in St. Louis School of Medicine. Dr. John Fierros Canales, MD is affiliated with Methodist Health System, Cardiology Clinic of San Antonio and Methodist Hospital Northeast.

Office Locations

1139 E Sonterra Boulevard Suite 520
San Antonio, TX 78258

(210) 490-6000

(210) 490-4658

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12500 Judson Road Suite 300
Live Oak, TX 78233

(210) 967-0096

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12709 Toepperwein Road Suite 306
Live Oak, TX 78233

(210) 967-0096

(210) 967-0383

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12709 Toepperwein Road Suite 306
San Antonio, TX 78233

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1626 Common Street
New Braunfels, TX 78130

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Some issues Dr. John Fierros Canales, MD can help you with:

Angioplasty

Angioplasty is a common, minimally invasive procedure performed to restore blood flow in arteries and veins that have become narrowed or blocked. Age or illness can cause plaque to build up at certain spots within the veins and arteries, and if enough collects, it can restrict the flow of blood. Angioplasty uses a tiny balloon at the end of a small, flexible tube to inflate within the narrowed section and open it up again.

Angioplasty may be performed in several different areas of the body and for a variety of reasons, most often:

Peripheral arterial disease, which reduces blood flow in the arms or legs
Atherosclerosis, or general hardening of the arteries
Carotid artery stenosis, or narrowing of the arteries in the neck that supply the brain
Coronary artery disease, or narrowing of the arteries near the heart
Renal vascular hypertension, or narrowing of the arteries in the kidney, leading to increased blood pressure

During angioplasty, a patient is given a sedative while lying on a table under an x-ray machine. A catheter (a thin, flexible, and hollow tube) is inserted into the patient's skin in the arm or groin and guided into the blocked artery. Dye is injected via the catheter, and x-rays are used to position the tip of the catheter exactly at the blockage. The tiny balloon is guided through the catheter and inflated with saline. It pushes the plaque out of the way, squishing it against the walls of the artery. The balloon may be inflated and deflated several times to let blood pass by. A stent, a tiny tube of metal mesh like a spring, may be inserted to help keep the artery open. Then the x-ray is used again to check that blood is flowing properly, the catheter is removed, and the tiny incision is bandaged.

There are no nerves within veins and arteries, so an angioplasty is generally not painful. However, there may be some discomfort at the site of the incision and when the balloon is inflated. Overall, angioplasty is a very effective and low-risk procedure, useful for helping patients avoid more difficult bypass surgery.

Cardiac Catheterization

Cardiac catheterization is a procedure done to check on the health of the heart. A tiny, flexible tube called a catheter is inserted into a blood vessel through a very small opening, usually in the groin, and threaded through the blood vessel up to the heart. Once the catheter is in place, it can diagnose problems in the heart and perform certain corrective procedures.

A coronary catheter can be used to:

Take blood samples
Inject dye for an angiogram
Check for valve defects
Measure oxygen and pressure levels within the heart chambers
Take a biopsy
Perform a percutaneous coronary intervention, or procedure to clear blocked arteries
Widen narrowed valve openings

Because all of this can be accomplished without the need for open surgery, cardiac catheterization has become a popular option.

Heart Problems

The heart is one of the most important organs in the body. This smooth muscle expands and contracts rhythmically an entire lifetime, pumping blood to the lungs and then to every other cell in the body. When heart problems occur, it becomes difficult for the body to get the nutrients and oxygen it needs via the blood. So while there are a variety of illnesses and disorders that affect the heart, most of them cause weakness, exhaustion and shortness of breath. The most common heart conditions include heart disease, angina, arrhythmia, and valve disorders.

Heart disease is the leading cause of death in the United States for both men and women. This includes coronary artery disease, heart attacks, congestive heart failure, and congenital heart disease. Some conditions, such as genetics, cannot be controlled. But there are many other things one can do to lower their risk for heart disease. Controlling high blood pressure and cholesterol levels, reducing or stopping smoking, exercising more and losing weight if needed, and eating a diet low in sodium can all protect the heart.

Angina is a squeezing type of chest pain that happens when the muscles around the heart don't get enough oxygen. It can be regular or infrequent. Usually, angina is caused by coronary heart disease. However, not all chest pain is angina. Chest pain can also be caused by a lung infection or panic attack, for example, so it is important to have any sudden pain checked.

Arrhythmia is the word for when the heart beats too fast, too slow, or irregularly with skipped beats. It can feel frightening, and depending on the type it can be dangerous, but in most cases arrhythmia is not serious and can be treated. It is very common, especially in older adults.

Heart valve problems can happen in any one of the the heart's four valves that keep blood flowing where it needs to go. Babies can be born with problems in their heart valves, or valves can be damaged by infections. The valves can stiffen and become less mobile, or they can stop closing properly and 'leak' when the heart beats. Valve problems can usually be repaired surgically.

Noteworthy Medicare Patient Procedures Performed by Dr. John Fierros Canales, MD in 2024

Click on any procedure below to see further details on volume and pricing among Medicare patients.

Top 5%

By Volume:

Doppler echocardiography

inpatient hospital care

By Affordability:

arterial duplex ultrasound

arterial ultrasound

carotid duplex ultrasound

carotid ultrasound

color Doppler echocardiography

Doppler echocardiography

Doppler ultrasound

duplex ultrasound

echocardiogram

enhanced external counterpulsation

lower extremity arterial duplex

lower extremity arterial ultrasound

spectral Doppler echocardiography

ultrasound

vascular studies

vascular ultrasound

In 2024, among providers in related specialties within Texas, Dr. John Fierros Canales, MD performed more Doppler echocardiography, and inpatient hospital care (for patient admitted to hospital) procedures for Medicare patients than 95% of them and he also had a list price for arterial duplex ultrasound, arterial ultrasound, carotid duplex ultrasound, carotid ultrasound, color Doppler echocardiography, Doppler echocardiography, Doppler ultrasound, duplex ultrasound, echocardiogram (echo), enhanced external counterpulsation (EECP), lower extremity arterial duplex, lower extremity (leg) arterial ultrasound, spectral Doppler echocardiography, ultrasound (sonogram), vascular studies, and vascular ultrasound that was lower than the list prices billed to Medicare by 95% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 10%

By Volume:

cardiac procedures

coronary angiogram

ultrasound

By Affordability:

atherectomy

cardiac stress testing

myocardial perfusion SPECT

transthoracic echocardiography

vascular physiologic studies

In 2024, among providers in related specialties within Texas, Dr. John Fierros Canales, MD performed more cardiac procedures, coronary angiogram, and ultrasound (sonogram) procedures for Medicare patients than 90% of them and he also had a list price for atherectomy, cardiac (heart) stress testing, myocardial perfusion SPECT, nuclear scan, nuclear stress test (myocardial perfusion imaging), SPECT scan, stress testing, transthoracic echocardiography (TTE), and vascular physiologic studies that was lower than the list prices billed to Medicare by 90% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Top 25%

By Volume:

cardiac catheterization

cardiac stress testing

left heart catheterization

myocardial perfusion SPECT

nuclear scan

vascular procedures

By Affordability:

ankle brachial index

coronary angiogram

coronary atherectomy

coronary atherectomy with stent

electrocardiogram

hospital care

inpatient care

inpatient hospital care

stress EKG

vascular imaging

vascular procedures

In 2012, among providers in related specialties within Texas, Dr. John Fierros Canales, MD performed more cardiac catheterization, cardiac (heart) stress testing, left heart catheterization, myocardial perfusion SPECT, nuclear scan, and vascular procedures procedures for Medicare patients than 75% of them and he also had a list price for ankle brachial index (ABI), coronary angiogram, coronary atherectomy, coronary atherectomy with stent, electrocardiogram (EKG), hospital care, inpatient care, inpatient hospital care (for patient admitted to hospital), stress EKG, vascular imaging, and vascular procedures that was lower than the list prices billed to Medicare by 75% of them. Actual amounts paid by patients can vary widely depending on a number of factors, including insurance coverage. A lower list price, however, might mean lower fees when paying without insurance.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2012 were cardiac procedures, minimally invasive procedures, hospital care and catheterization.

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

angioplasty	39
cardiac procedures	805
catheterization	513
diagnostic procedures	344
doctor visit	38
hospital care	593
inpatient care	479
minimally invasive procedures	633
outpatient care	114
stent placement (stenting)	156
ultrasound (sonogram)	258
vascular procedures	508

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2013 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

angioplasty	92
cardiac procedures	699
catheterization	251
diagnostic procedures	113
doctor visit	358
hospital care	827
inpatient care	752
lab tests	143
minimally invasive procedures	266
nuclear scan	48
outpatient care	75
stent placement (stenting)	92
stress testing	85
ultrasound (sonogram)	354
vascular procedures	233

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	305
Female	364

**Ethnicity**
Non-Hispanic White	523
Black	0
Hispanic	103
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	260
From 75 to 84	227
85 and over	107
Less than 65	75

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2013

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	75
Depression	28
Chronic Kidney Disease	49
Asthma	13
Osteoperosis	9
Atrial Fibrilation	32
Heart Failure	51
Chronic Obstructive Pulmonary Disease	29
Diabetes	50
Dementia	19
Cancer	16

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2014 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

angioplasty	32
cardiac procedures	663
catheterization	85
diagnostic procedures	37
doctor visit	875
hospital care	1372
inpatient care	1357
lab tests	96
minimally invasive procedures	85
nuclear scan	82
outpatient care	15
stent placement (stenting)	32
stress testing	164
ultrasound (sonogram)	458
vascular procedures	166

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	336
Female	393

**Ethnicity**
Non-Hispanic White	530
Black	78
Hispanic	110
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	287
From 75 to 84	246
85 and over	130
Less than 65	66

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	75
Depression	30
Chronic Kidney Disease	48
Asthma	10
Osteoperosis	9
Atrial Fibrilation	26
Heart Failure	49
Chronic Obstructive Pulmonary Disease	29
Diabetes	46
Dementia	21
Cancer	14

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2015 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	17
angioplasty	72
cardiac procedures	1110
catheterization	185
diagnostic procedures	77
doctor visit	1200
hospital care	2186
inpatient care	2170
lab tests	66
minimally invasive procedures	185
nuclear scan	115
outpatient care	16
stent placement (stenting)	72
stress testing	233
ultrasound (sonogram)	713
vascular procedures	250

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	1056
Female	1188

**Ethnicity**
Non-Hispanic White	1594
Black	244
Hispanic	368
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	934
From 75 to 84	740
85 and over	334
Less than 65	236

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	15
Ischemic Heart Disease	75
Depression	29
Chronic Kidney Disease	51
Asthma	23
Osteoperosis	7
Atrial Fibrilation	25
Heart Failure	47
Chronic Obstructive Pulmonary Disease	30
Diabetes	48
Dementia	21
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2016 were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	23
angioplasty	98
cardiac procedures	1460
catheterization	234
diagnostic procedures	87
doctor visit	1839
hospital care	1902
inpatient care	1870
minimally invasive procedures	234
nuclear scan	176
outpatient care	32
stent placement (stenting)	98
stress testing	351
ultrasound (sonogram)	884
vascular procedures	272

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	560
Female	639

**Ethnicity**
Non-Hispanic White	835
Black	126
Hispanic	205
Asian	16
Other	0
Native American	0

**Age**
From 65 to 74	501
From 75 to 84	411
85 and over	172
Less than 65	115

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	67
Depression	26
Chronic Kidney Disease	56
Asthma	32
Osteoperosis	8
Atrial Fibrilation	23
Heart Failure	42
Chronic Obstructive Pulmonary Disease	30
Diabetes	45
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2017 were hospital care, cardiac procedures, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	22
angioplasty	78
cardiac procedures	1629
catheterization	216
diagnostic procedures	99
doctor visit	2296
hospital care	1660
inpatient care	1620
lab tests	263
minimally invasive procedures	216
nuclear scan	240
outpatient care	40
stent placement (stenting)	78
stress testing	427
ultrasound (sonogram)	1035
vascular procedures	372

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	759
Female	788

**Ethnicity**
Non-Hispanic White	1093
Black	143
Hispanic	260
Asian	28
Other	0
Native American	0

**Age**
From 65 to 74	634
From 75 to 84	567
85 and over	216
Less than 65	130

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2017

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	61
Depression	23
Chronic Kidney Disease	52
Asthma	10
Osteoperosis	7
Atrial Fibrilation	24
Heart Failure	38
Chronic Obstructive Pulmonary Disease	25
Diabetes	45
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2018 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	18
angioplasty	124
cardiac procedures	1766
catheterization	326
diagnostic procedures	140
doctor visit	2248
hospital care	1609
inpatient care	1589
lab tests	265
minimally invasive procedures	326
nuclear scan	233
outpatient care	20
stent placement (stenting)	124
stress testing	439
ultrasound (sonogram)	873
vascular procedures	312

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	715
Female	752

**Ethnicity**
Non-Hispanic White	1027
Black	148
Hispanic	247
Asian	25
Other	0
Native American	0

**Age**
From 65 to 74	603
From 75 to 84	533
85 and over	199
Less than 65	132

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2018

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	59
Depression	22
Chronic Kidney Disease	54
Asthma	9
Osteoperosis	6
Atrial Fibrilation	23
Heart Failure	38
Chronic Obstructive Pulmonary Disease	25
Diabetes	43
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2019 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	22
angioplasty	94
cardiac procedures	1981
catheterization	348
diagnostic procedures	181
doctor visit	2794
hospital care	1870
inpatient care	1836
lab tests	229
minimally invasive procedures	348
nuclear scan	233
outpatient care	34
stent placement (stenting)	120
stress testing	300
ultrasound (sonogram)	1032
vascular procedures	336

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	1223
Female	1346

**Ethnicity**
Non-Hispanic White	1818
Black	247
Hispanic	434
Asian	32
Other	38
Native American	0

**Age**
From 65 to 74	1047
From 75 to 84	0
85 and over	352
Less than 65	0

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2019

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	59
Depression	29
Chronic Kidney Disease	55
Asthma	11
Osteoperosis	8
Atrial Fibrilation	24
Heart Failure	39
Chronic Obstructive Pulmonary Disease	24
Diabetes	44
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2020 were cardiac procedures, hospital care, inpatient care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	33
angioplasty	52
cardiac procedures	1428
catheterization	176
diagnostic procedures	98
doctor visit	2714
hospital care	1287
inpatient care	1263
lab tests	138
minimally invasive procedures	176
nuclear scan	201
outpatient care	24
stent placement (stenting)	52
stress testing	225
ultrasound (sonogram)	954
vascular procedures	215

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	1034
Female	1082

**Ethnicity**
Non-Hispanic White	1479
Black	195
Hispanic	385
Asian	0
Other	29
Native American	0

**Age**
From 65 to 74	841
From 75 to 84	790
85 and over	297
Less than 65	188

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2020

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	59
Depression	28
Chronic Kidney Disease	56
Asthma	11
Osteoperosis	8
Atrial Fibrilation	22
Heart Failure	37
Chronic Obstructive Pulmonary Disease	22
Diabetes	46
Dementia	21
Cancer	13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2021 were cardiac procedures, inpatient care, hospital care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

ambulatory monitoring	28
angioplasty	88
cardiac procedures	1551
catheterization	248
diagnostic procedures	116
doctor visit	2640
hospital care	1390
inpatient care	1390
lab tests	168
minimally invasive procedures	248
nuclear scan	208
stent placement (stenting)	88
stress testing	392
ultrasound (sonogram)	914
vascular procedures	218

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	978
Female	1060

**Ethnicity**
Non-Hispanic White	1430
Black	197
Hispanic	352
Asian	29
Other	0
Native American	0

**Age**
From 65 to 74	851
From 75 to 84	755
85 and over	282
Less than 65	150

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2021

Hypertension	75
High Cholesterol	75
Stroke	9
Ischemic Heart Disease	57
Depression	25
Chronic Kidney Disease	55
Asthma	10
Osteoperosis	9
Atrial Fibrilation	22
Heart Failure	37
Chronic Obstructive Pulmonary Disease	20
Diabetes	45
Dementia	20
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2022 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

angioplasty	54
cardiac procedures	1264
catheterization	176
diagnostic procedures	95
doctor visit	2322
enhanced external counterpulsation (EECP)	351
hospital care	1353
inpatient care	1353
lab tests	142
minimally invasive procedures	176
nuclear scan	155
stent placement (stenting)	54
stress testing	303
ultrasound (sonogram)	830
vascular procedures	221

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	1125
Female	1135

**Ethnicity**
Non-Hispanic White	1627
Black	196
Hispanic	371
Asian	33
Other	33
Native American	0

**Age**
From 65 to 74	886
From 75 to 84	916
85 and over	340
Less than 65	118

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	51
Depression	27
Chronic Kidney Disease	43
Asthma	14
Osteoperosis	14
Atrial Fibrilation	33
Heart Failure	34
Chronic Obstructive Pulmonary Disease	23
Diabetes	45
Dementia	14
Cancer	17

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2023 were inpatient care, hospital care, cardiac procedures and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

angioplasty	56
cardiac procedures	1148
catheterization	166
diagnostic procedures	82
doctor visit	2278
enhanced external counterpulsation (EECP)	528
hospital care	1346
inpatient care	1346
minimally invasive procedures	166
nuclear scan	155
stent placement (stenting)	56
stress testing	306
ultrasound (sonogram)	711
vascular procedures	169

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	962
Female	991

**Ethnicity**
Non-Hispanic White	1377
Black	190
Hispanic	308
Asian	43
Other	35
Native American	0

**Age**
From 65 to 74	757
From 75 to 84	809
85 and over	281
Less than 65	106

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	16
Ischemic Heart Disease	50
Depression	28
Chronic Kidney Disease	43
Asthma	14
Osteoperosis	14
Atrial Fibrilation	31
Heart Failure	35
Chronic Obstructive Pulmonary Disease	23
Diabetes	45
Dementia	14
Cancer	17

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX during 2024 were cardiac procedures, inpatient care, hospital care and ultrasound (sonogram).

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

angioplasty	38
cardiac procedures	1142
catheterization	175
diagnostic procedures	88
doctor visit	1339
enhanced external counterpulsation (EECP)	267
hospital care	981
inpatient care	981
minimally invasive procedures	175
nuclear scan	127
stent placement (stenting)	68
stress testing	241
ultrasound (sonogram)	758
vascular procedures	181

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	676
Female	681

**Ethnicity**
Non-Hispanic White	947
Black	130
Hispanic	228
Asian	31
Other	21
Native American	0

**Age**
From 65 to 74	479
From 75 to 84	608
85 and over	201
Less than 65	69

Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2024

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	51
Depression	25
Chronic Kidney Disease	45
Asthma	16
Osteoperosis	12
Atrial Fibrilation	32
Heart Failure	35
Chronic Obstructive Pulmonary Disease	24
Diabetes	46
Dementia	13
Cancer	14

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. John Fierros Canales, MD for Medicare patients.

The highest averages for the top procedures that Dr. John Fierros Canales, MD treated as an interventional cardiologist in San Antonio, TX were hospital care, inpatient care, cardiac procedures and ultrasound (sonogram).

ambulatory monitoring	23
angioplasty	70
cardiac procedures	1280
catheterization	238
diagnostic procedures	119
doctor visit	1764
hospital care	1413
inpatient care	1385
lab tests	167
minimally invasive procedures	248
nuclear scan	164
outpatient care	41
stent placement (stenting)	83
stress testing	288
ultrasound (sonogram)	751
vascular procedures	265

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. John Fierros Canales, MD.

**Gender**
Male	748
Female	801

**Ethnicity**
Black / African American	145
Asian / Pacific Islander	18
Non-Hispanic White	1098
Hispanic	259
Native American / Alaskan Native	0
Other	12

**Age**
75 to 84	507
85 and over	223
Less than 65	106
65 to 74	621

Average of Total of Conditions of Medicare patients treated by Dr. John Fierros Canales, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. John Fierros Canales, MD treated were high cholesterol, hypertension, ischemic heart disease and chronic kidney disease.

Hypertension	69
High Cholesterol	69
Stroke	11
Ischemic Heart Disease	56
Depression	24
Chronic Kidney Disease	46
Asthma	13
Osteoporosis	8
Heart Failure	37
Chronic Obstructive Pulmonary Disease	23
Diabetes	42
Atrial Fibrillation	24
Cancer	12
Dementia	16

Education & Training

Dr. John Fierros Canales, MD graduated from Washington University in St. Louis School of Medicine. He completed residency at University of Texas Southwestern Medical Center at Dallas and Affiliated Hospitals. He has a state license in Texas.

Medical School: Washington University in St. Louis School of Medicine

Residency: University of Texas Southwestern Medical Center at Dallas and Affiliated Hospitals

Licensed In: Texas

Affiliations & Hospitals

Dr. John Fierros Canales, MD is associated with these hospitals and organizations:

Methodist Health System

Cardiology Clinic of San Antonio

Methodist Hospital Northeast

Ratings & Reviews

Dr. John Fierros Canales, MD has a good overall rating with an average of 3.0 out of 5 stars based on 2 ratings. We collect ratings and reviews of Dr. John Fierros Canales, MD from all over the web to help you find the right in San Antonio, TX.

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General Payments

These charts describe general payments received by Dr. John Fierros Canales, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

**Payments by Company**
AstraZeneca Pharmaceuticals LP	$37,423 BRILINTA $37,407	FARXIGA $15
Boston Scientific Corporation	$3,213 ATHERECTOMY $404	GENERAL THERAPIES $226	AVVIGO Guidance System $192	GENERAL - THERAPIES $143	OPTICROSS $128	Other $2,120
Janssen Pharmaceuticals, Inc	$944 XARELTO $937	$7
Philips Electronics North America Corporation	$791 IGT D Peripheral $602	IGT_D Coronary $80	(6356) Core Integrated $34	(8334) IGT D Peripheral $30	IGT D Coronary $21	Other $23
ABIOMED	$663 Impella $663
Other	$5,468 ENTRESTO $570	LifeVest $560	Repatha $513	ELIQUIS $436	VERQUVO $239	Other $3,149

**Types of Payments**
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program	$35,600
Food and Beverage	$12,037
Travel and Lodging	$602
Education	$262

Biography

Dr. John Canales is a specialist in adult cardiology and interventional cardiology. He works in San Antonio, TX and Live Oak, TX. Dr. Canales's areas of expertise include coronary intravascular ultrasound, stent placement (stenting), and heart problems. He attended Washington University in St. Louis School of Medicine and subsequently trained at a hospital affiliated with the University of Texas Southwestern Medical Center at Dallas for residency. He has received professional recognition including the following: Texas Rising Stars. He is conversant in Spanish. Dr. Canales is affiliated with Cardiology Clinic of San Antonio.

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Noteworthy Medicare Patient Procedures Performed by Dr. John Fierros Canales, MD in 2024

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Conditions of Medicare patients treated by Dr. John Fierros Canales, MD in 2024

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Average Medicare Patient Data From 2012 - 2024

Average of Total of Conditions of Medicare patients treated by Dr. John Fierros Canales, MD From 2012 - 2024

Education & Training

Affiliations & Hospitals

Ratings & Reviews

General Payments

Biography

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