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Dr. John Joseph Mahmarian, MD, FACC

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Specializes in: Adult Cardiology

New York Medical College (1980)

Professional interests include: high cholesterol (hyperlipidemia), angiogram (angiography), arrhythmias (irregular heartbeats), and more.

6550 FANNIN STREET SUITE 1901
Houston, TX 77030

(713) 441-1100

Dr. John Joseph Mahmarian, MD, FACC is a cardiologist in Houston, TX specializing in adult cardiology. He graduated from New York Medical College in 1980 and has 45 years of experience. Dr. John Joseph Mahmarian, MD, FACC is affiliated with Houston Methodist and TMH PHYSICIAN ASSOCIATES PLLC.

Office Locations

Address:

6550 FANNIN STREET SUITE 1901
Houston, TX 77030

Some issues Dr. John Joseph Mahmarian, MD, FACC can help you with:

Angiogram (Angiography)

Angiography is the use of x-rays to examine blood vessels, especially in order to identify any blocked or misshapen vessels that may cause problems. The test itself is called an angiogram. Some of the disorders that angiograms can be used to diagnose include:

Blockages and narrowing
Weakened walls and bulging, called an aneurysm
Malformations and misshapen blood vessels
Kidney artery conditions
Aorta artery conditions
Vein problems, including deep vein thrombosis (DVT) and blood clots or embolisms

During an angiogram, the doctor inserts a very thin, flexible tube called a catheter into a blood vessel through an opening in the groin or arm. The catheter is threaded through the body to the site of the suspected problem, where a small amount of dye is injected into the bloodstream and x-rays are taken. The dye makes the surrounding blood vessels visible via x-ray.

If necessary, certain procedures can be performed after an angiogram while the catheter is in place. Angioplasty is the use of a catheter to widen narrowed or blocked arteries. Stents are like tiny coiled springs that hold blood vessels open, and they can be placed during a catheterization. Damaged heart valves can also be repaired or replaced.

A typical angiogram takes about an hour to perform, but it may be longer if the catheterization is used to perform procedures on the blood vessels. It may be uncomfortable at times but is usually not painful. Afterwards, patients may be monitored for up to six hours to make sure any bleeding from the insertion site has stopped. They are given fluids to help flush the dye from their body. For a day or two after an angiogram it is important for patients to drink plenty of fluids and keep strenuous activity to a minimum.

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.

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.

cardiac procedures	875
doctor visit	121
hospital care	160
inpatient care	160
lab tests	50
nuclear scan	704
stress testing	875

**Gender**
Male	495
Female	500

**Ethnicity**
Non-Hispanic White	677
Black	198
Hispanic	92
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	410
From 75 to 84	308
85 and over	110
Less than 65	167

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	75
Depression	23
Chronic Kidney Disease	43
Asthma	12
Osteoperosis	9
Atrial Fibrilation	29
Heart Failure	48
Chronic Obstructive Pulmonary Disease	24
Diabetes	46
Dementia	13
Cancer	12

cardiac procedures	908
doctor visit	179
hospital care	170
inpatient care	170
lab tests	57
nuclear scan	712
stress testing	908

**Gender**
Male	563
Female	553

**Ethnicity**
Non-Hispanic White	783
Black	208
Hispanic	88
Asian	23
Other	0
Native American	0

**Age**
From 65 to 74	472
From 75 to 84	356
85 and over	134
Less than 65	154

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	75
Depression	24
Chronic Kidney Disease	43
Asthma	11
Osteoperosis	8
Atrial Fibrilation	31
Heart Failure	45
Chronic Obstructive Pulmonary Disease	24
Diabetes	45
Dementia	12
Cancer	12

cardiac procedures	1012
doctor visit	212
hospital care	177
inpatient care	177
lab tests	80
nuclear scan	796
stress testing	1012

**Gender**
Male	1200
Female	1240

**Ethnicity**
Non-Hispanic White	1646
Black	476
Hispanic	242
Asian	50
Other	0
Native American	0

**Age**
From 65 to 74	1002
From 75 to 84	770
85 and over	314
Less than 65	354

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	75
Depression	24
Chronic Kidney Disease	46
Asthma	17
Osteoperosis	8
Atrial Fibrilation	30
Heart Failure	48
Chronic Obstructive Pulmonary Disease	24
Diabetes	44
Dementia	12
Cancer	13

cardiac procedures	1116
doctor visit	244
hospital care	152
inpatient care	152
lab tests	44
nuclear scan	861
stress testing	1116

**Gender**
Male	777
Female	722

**Ethnicity**
Non-Hispanic White	1001
Black	281
Hispanic	148
Asian	40
Other	29
Native American	0

**Age**
From 65 to 74	653
From 75 to 84	469
85 and over	176
Less than 65	201

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	75
Depression	23
Chronic Kidney Disease	51
Asthma	25
Osteoperosis	8
Atrial Fibrilation	30
Heart Failure	50
Chronic Obstructive Pulmonary Disease	22
Diabetes	44
Dementia	14
Cancer	14

cardiac procedures	1073
doctor visit	257
hospital care	124
inpatient care	124
nuclear scan	809
stress testing	1073

**Gender**
Male	746
Female	750

**Ethnicity**
Non-Hispanic White	1039
Black	238
Hispanic	147
Asian	43
Other	29
Native American	0

**Age**
From 65 to 74	679
From 75 to 84	465
85 and over	172
Less than 65	180

Hypertension	75
High Cholesterol	69
Stroke	12
Ischemic Heart Disease	75
Depression	24
Chronic Kidney Disease	51
Asthma	11
Osteoperosis	7
Atrial Fibrilation	26
Heart Failure	47
Chronic Obstructive Pulmonary Disease	22
Diabetes	42
Dementia	13
Cancer	13

cardiac procedures	908
doctor visit	254
hospital care	101
inpatient care	101
nuclear scan	677
stress testing	908

**Gender**
Male	711
Female	658

**Ethnicity**
Non-Hispanic White	957
Black	215
Hispanic	121
Asian	40
Other	0
Native American	0

**Age**
From 65 to 74	634
From 75 to 84	445
85 and over	157
Less than 65	133

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	75
Depression	25
Chronic Kidney Disease	52
Asthma	9
Osteoperosis	8
Atrial Fibrilation	31
Heart Failure	46
Chronic Obstructive Pulmonary Disease	23
Diabetes	43
Dementia	14
Cancer	14

cardiac procedures	613
doctor visit	327
hospital care	61
inpatient care	61
nuclear scan	438
stress testing	613

**Gender**
Male	579
Female	521

**Ethnicity**
Non-Hispanic White	788
Black	155
Hispanic	91
Asian	43
Other	0
Native American	0

**Age**
From 65 to 74	549
From 75 to 84	340
85 and over	111
Less than 65	100

Hypertension	75
High Cholesterol	75
Stroke	10
Ischemic Heart Disease	75
Depression	24
Chronic Kidney Disease	45
Asthma	9
Osteoperosis	9
Atrial Fibrilation	27
Heart Failure	38
Chronic Obstructive Pulmonary Disease	17
Diabetes	39
Dementia	12
Cancer	13

cardiac procedures	535
doctor visit	164
nuclear scan	299
stress testing	535

**Gender**
Male	516
Female	440

**Ethnicity**
Non-Hispanic White	681
Black	121
Hispanic	93
Asian	34
Other	0
Native American	0

**Age**
From 65 to 74	502
From 75 to 84	304
85 and over	77
Less than 65	73

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	75
Depression	23
Chronic Kidney Disease	47
Asthma	9
Osteoperosis	11
Atrial Fibrilation	28
Heart Failure	37
Chronic Obstructive Pulmonary Disease	17
Diabetes	39
Dementia	11
Cancer	12

cardiac procedures	1066
doctor visit	476
hospital care	25
inpatient care	25
nuclear scan	410
stress testing	1066

Average Medicare Procedure Volume From 2013 - 2021

Volume of procedures performed by Dr. John Joseph Mahmarian, MD, FACC for Medicare patients.

The highest averages for the top procedures that Dr. John Joseph Mahmarian, MD, FACC treated as a cardiologist in Houston, TX were stress testing, cardiac procedures, nuclear scan and hospital care.

cardiac procedures	901
doctor visit	250
hospital care	121
inpatient care	121
lab tests	57
nuclear scan	634
stress testing	901

Average Medicare Patient Data From 2013 - 2021

Information about Medicare patients treated by Dr. John Joseph Mahmarian, MD, FACC.

**Gender**
Female	538
Male	558

**Ethnicity**
Black / African American	189
Asian / Pacific Islander	27
Non-Hispanic White	757
Native American / Alaskan Native	0
Hispanic	102
Other	5

**Age**
85 and over	125
75 to 84	345
Less than 65	136
65 to 74	490

Average of Total of Conditions of Medicare patients treated by Dr. John Joseph Mahmarian, MD, FACC From 2013 - 2021

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

Hypertension	60
High Cholesterol	59
Stroke	9
Ischemic Heart Disease	60
Depression	19
Chronic Kidney Disease	37
Asthma	10
Osteoporosis	6
Heart Failure	35
Chronic Obstructive Pulmonary Disease	17
Diabetes	34
Atrial Fibrillation	23
Dementia	10
Cancer	10

Education & Training

Dr. John Joseph Mahmarian, MD, FACC graduated from New York Medical College in 1980. He has a state license in Texas.

Medical School: New York Medical College (1980)

Licensed In: Texas

Affiliations & Hospitals

Dr. John Joseph Mahmarian, MD, FACC is associated with these hospitals and organizations:

Houston Methodist

TMH PHYSICIAN ASSOCIATES PLLC

Ratings & Reviews

Dr. John Joseph Mahmarian, MD, FACC has an exceptional overall rating with an average of 5.0 out of 5 stars based on 1 ratings. We collect ratings and reviews of Dr. John Joseph Mahmarian, MD, FACC from all over the web to help you find the right in Houston, TX.

Overall Rating

(1 Rating)

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Reviews From Around The Web

Overall Rating: 5.0 2024-05-28

Patient verified via Press Ganey

His attention to my questions and the consideration of treatment was thoughtful and well explained.

General Payments

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

**Payments by Company**
Astellas Pharma US Inc	$117,971 Lexiscan $90,287	$27,684
Siemens Medical Solutions USA, Inc.	$2,356 Biograph mCT Flow $1,997	Biograph mCT $341	SOMATOM Force $18
GE Healthcare	$2,058 REVOLUTION CT $2,013	$44
St. Jude Medical, Inc.	$342 CRM $342
Bolton Medical Inc	$148 Grafts $148
Other	$393 XARELTO $124	GENERAL STENTS $92	FFRct $69	LEQVIO $25	BRILINTA $24	Other $59

**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	$81,145
Travel and Lodging	$28,830
Consulting Fee	$10,700
Food and Beverage	$2,574
Education	$19

Research Payments

Dr. John Joseph Mahmarian, MD, FACC has received 1 research payments totaling $867.

Biography

Dr. John Mahmarian practices adult cardiology. His areas of expertise include arrhythmias (irregular heartbeats), pain, and high cholesterol (hyperlipidemia). Dr. Mahmarian is a graduate of New York Medical College. He is professionally affiliated with Houston Methodist. His practice in Houston, TX is open to new patients as reported by Doctor.com.