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Dr. John J. Ragan, MD

Accepting New Patients

(347 Ratings)

Specializes in: Adult Cardiology

New York Medical College

Professional interests include: tachycardia (very fast heart rate), stress testing, coronary artery disease, and more.

1027 Washington Avenue
Detroit Lakes, MN 56501

(218) 844-2300

Dr. John J. Ragan, MD is a cardiologist in Detroit Lakes, MN specializing in adult cardiology. He graduated from New York Medical College. Dr. John J. Ragan, MD is affiliated with Essentia Health, ST MARYS REGIONAL HEALTH CENTER and INNOVIS HEALTH LLC.

Office Locations

1027 Washington Avenue
Detroit Lakes, MN 56501

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3000 32nd Avenue S
Fargo, ND 58103

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201 9th Street W
Ada, MN 56510

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900 Hilligoss Boulevard SE SUITE 200
Fosston, MN 56542

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115 W 2nd Street
Graceville, MN 56240

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2430 20th Street SW
Jamestown, ND 58401

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401 N 9th Street
Bismarck, ND 58501

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705 Pleasant Avenue S
Park Rapids, MN 56470

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Some issues Dr. John J. Ragan, MD can help you with:

Coronary Artery Disease

Coronary artery disease (CAD) is the most common type of heart disease. It happens when the blood vessels carrying blood to the heart, called coronary arteries, narrow and harden. This occurs when cholesterol, a type of fat found in the blood, builds up to form plaque, which sticks to the inner walls of the arteries. As plaque accumulates, less blood can flow through the arteries, which may lead to the following:

Angina, which is chest pain that occurs when the heart does not receive enough blood flow.
Heart attack, which happens if the arteries leading to the heart are completely blocked.
Arrhythmia, or irregular heartbeat, which can develop if the heart does not have enough blood supply.
Heart failure, which may occur if a heart attack damages the heart and it becomes too weak to pump enough blood to the rest of the body.

Certain factors may increase risk for the disease, like smoking, lack of exercise, being overweight, high cholesterol, high blood pressure, and diabetes. CAD tends to develop over decades, so it can go undetected until it has become quite severe. A diagnosis may be established using such tests as:

Electrocardiogram (ECG), which records the heart's electrical activity over a period of time. ECGs can detect whether there is enough blood flow to the heart or if a heart attack has occurred.
Echocardiogram (echo), which creates images of the heart using sound waves. Echos can show whether the heart is able to pump blood normally.
Stress tests, where an ECG or echo is combined with exercise, like riding a stationary bike or walking on a treadmill. This test is done to find out if the heart can function properly while performing a strenuous activity.

Treatments for the disease include medications such as vasodilators, like nitroglycerin, which dilates (widens) the coronary arteries. CAD may also be treated by a procedure called angioplasty with stent placement, where a balloon is inflated inside a diseased artery to flatten the plaque deposits against the artery walls, creating more room for blood to flow.

In some severe cases of the disease, multiple arteries may be blocked, and an open heart surgery called coronary artery bypass surgery may be necessary. This operation transplants a vessel from another part of the body to form a graft that goes past the narrowed arteries, thus enabling blood to flow around those arteries.

Heart Attack

A heart attack is a serious medical event that happens when the blood supplying oxygen to the heart is cut off, usually because of a blockage in an artery. This results in damage or death of part of the heart muscle. The heart can heal, but like any part of the body that was injured it leaves a scar. This scar tissue does not contract effectively, so the ability of the heart to pump is lowered after a heart attack.

A heart attack, sometimes called a myocardial infarction, can happen without warning. However there are certain factors that raise the risk of heart attack. Some of these are:

Age
Gender (most heart attack sufferers are male)
A family history of heart attacks
Smoking
Obesity
High cholesterol
High blood pressure
Diabetes
Unhealthy lifestyle choices (lack of exercise, poor diet, too much alcohol or stress)

Heart attacks typically feel like pain or pressure in the chest that can radiate out to the back, arm, or jaw. Some other symptoms can include fatigue or weakness, shortness of breath, sweating, and nausea.

Treatment aims to increase blood flow to the heart muscle by opening up blocked blood vessels. Medications are sometimes used to dissolve clots in the arteries. Aspirin and other medications such as Plavix can thin the blood and make clots less likely to form. Dilators can widen blood vessels to make room for more blood to flow. Doctors can also use a procedure called catheterization to look at the blood vessels around the heart directly, place stents, or widen vessels using angioplasty. In extreme cases bypass surgery can be used to help blood flow better. After recovery, it is important to lead a healthy lifestyle and take any prescribed medications in order to protect the heart.

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 J. Ragan, MD in 2023

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

Top 5%

By Volume:

cardiac procedures

cardioversion

Doppler echocardiography

echocardiogram

elective external cardioversion

inpatient hospital care

transesophageal echocardiography

ultrasound

By Affordability:

color Doppler echocardiography

Doppler echocardiography

spectral Doppler echocardiography

In 2023, among providers in related specialties within Minnesota, Dr. John J. Ragan, MD performed more cardiac procedures, cardioversion, Doppler echocardiography, echocardiogram (echo), elective external cardioversion, inpatient hospital care (for patient admitted to hospital), transesophageal echocardiography (TEE), and ultrasound (sonogram) procedures for Medicare patients than 95% of them and he also had a list price for color Doppler echocardiography, Doppler echocardiography, and spectral Doppler echocardiography 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:

stress EKG

In 2023, Dr. John J. Ragan, MD performed more stress EKG procedures for Medicare patients than 90% of providers in related specialties within Minnesota.

Top 25%

By Volume:

cardiac stress testing

By Affordability:

cardiac imaging

cardioversion

echocardiogram

elective cardioversion

elective external cardioversion

external cardioversion

transesophageal echocardiography

In 2012, among providers in related specialties within Minnesota, Dr. John J. Ragan, MD performed more cardiac (heart) stress testing procedures for Medicare patients than 75% of them and he also had a list price for cardiac imaging, cardioversion, echocardiogram (echo), elective cardioversion, elective external cardioversion, external cardioversion, and transesophageal echocardiography (TEE) 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 J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2012 were cardiac procedures, ultrasound (sonogram), minimally invasive procedures and diagnostic procedures.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

blood draw	28
cardiac procedures	689
cardioversion	13
catheterization	81
diagnostic procedures	81
doctor visit	658
hospital care	78
implant surgery	46
implantable cardioverter-defibrillator (ICD) replacement	12
inpatient care	78
minimally invasive procedures	164
stress testing	46
ultrasound (sonogram)	545
vascular procedures	81

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2013 were ultrasound (sonogram) and cardiac procedures.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

cardiac procedures	273
ultrasound (sonogram)	273

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	233
Female	283

**Ethnicity**
Non-Hispanic White	494
Black	0
Hispanic	0
Asian	0
Other	0
Native American	11

**Age**
From 65 to 74	143
From 75 to 84	177
85 and over	125
Less than 65	71

Conditions of Medicare patients treated by Dr. John J. Ragan, MD in 2013

Hypertension	75
High Cholesterol	61
Stroke	9
Ischemic Heart Disease	50
Depression	30
Chronic Kidney Disease	39
Asthma	11
Osteoperosis	12
Atrial Fibrilation	27
Heart Failure	39
Chronic Obstructive Pulmonary Disease	26
Diabetes	37
Dementia	12
Cancer	15

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2018 were ultrasound (sonogram), cardiac procedures, hospital care and inpatient care.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

cardiac procedures	518
doctor visit	398
hospital care	30
inpatient care	30
minimally invasive procedures	25
ultrasound (sonogram)	518

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	810
Female	888

**Ethnicity**
Non-Hispanic White	1551
Black	0
Hispanic	19
Asian	0
Other	34
Native American	70

**Age**
From 65 to 74	566
From 75 to 84	524
85 and over	351
Less than 65	257

Conditions of Medicare patients treated by Dr. John J. Ragan, MD in 2018

Hypertension	75
High Cholesterol	66
Stroke	9
Ischemic Heart Disease	56
Depression	31
Chronic Kidney Disease	46
Asthma	10
Osteoperosis	9
Atrial Fibrilation	29
Heart Failure	41
Chronic Obstructive Pulmonary Disease	22
Diabetes	34
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2019 were cardiac procedures, ultrasound (sonogram), minimally invasive procedures and hospital care.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

blood draw	11
cardiac procedures	999
cardioversion	17
doctor visit	1083
hospital care	50
inpatient care	50
minimally invasive procedures	60
stress testing	40
ultrasound (sonogram)	959

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	1214
Female	1345

**Ethnicity**
Non-Hispanic White	2379
Black	21
Hispanic	0
Asian	0
Other	52
Native American	81

**Age**
From 65 to 74	906
From 75 to 84	836
85 and over	491
Less than 65	326

Conditions of Medicare patients treated by Dr. John J. Ragan, MD in 2019

Hypertension	75
High Cholesterol	67
Stroke	8
Ischemic Heart Disease	59
Depression	31
Chronic Kidney Disease	44
Asthma	9
Osteoperosis	10
Atrial Fibrilation	29
Heart Failure	38
Chronic Obstructive Pulmonary Disease	22
Diabetes	34
Dementia	12
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2020 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

cardiac procedures	1153
cardioversion	30
doctor visit	1057
hospital care	120
inpatient care	120
minimally invasive procedures	63
stress testing	99
ultrasound (sonogram)	1071

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	1369
Female	1368

**Ethnicity**
Non-Hispanic White	2554
Black	0
Hispanic	32
Asian	0
Other	50
Native American	72

**Age**
From 65 to 74	1067
From 75 to 84	860
85 and over	516
Less than 65	294

Conditions of Medicare patients treated by Dr. John J. Ragan, MD in 2020

Hypertension	75
High Cholesterol	71
Stroke	8
Ischemic Heart Disease	62
Depression	32
Chronic Kidney Disease	46
Asthma	8
Osteoperosis	8
Atrial Fibrilation	29
Heart Failure	38
Chronic Obstructive Pulmonary Disease	21
Diabetes	35
Dementia	12
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

cardiac procedures	1512
cardioversion	63
doctor visit	1184
hospital care	136
inpatient care	136
minimally invasive procedures	106
stress testing	173
ultrasound (sonogram)	1386

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	1485
Female	1583

**Ethnicity**
Non-Hispanic White	2891
Black	13
Hispanic	21
Asian	13
Other	66
Native American	64

**Age**
From 65 to 74	1192
From 75 to 84	986
85 and over	589
Less than 65	301

Conditions of Medicare patients treated by Dr. John J. Ragan, MD in 2021

Hypertension	75
High Cholesterol	71
Stroke	7
Ischemic Heart Disease	62
Depression	28
Chronic Kidney Disease	47
Asthma	8
Osteoperosis	9
Atrial Fibrilation	28
Heart Failure	40
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	10
Cancer	13

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

cardiac procedures	1703
cardioversion	76
doctor visit	1233
hospital care	144
inpatient care	144
minimally invasive procedures	126
stress testing	189
ultrasound (sonogram)	1554

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	1582
Female	1657

**Ethnicity**
Non-Hispanic White	3019
Black	25
Hispanic	21
Asian	13
Other	70
Native American	91

**Age**
From 65 to 74	1216
From 75 to 84	1073
85 and over	649
Less than 65	301

Conditions of Medicare patients treated by Dr. John J. Ragan, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	12
Ischemic Heart Disease	47
Depression	27
Chronic Kidney Disease	37
Asthma	10
Osteoperosis	12
Atrial Fibrilation	37
Heart Failure	39
Chronic Obstructive Pulmonary Disease	22
Diabetes	36
Dementia	8
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2022

Volume of procedures performed by Dr. John J. Ragan, MD for Medicare patients.

The highest averages for the top procedures that Dr. John J. Ragan, MD treated as a cardiologist in Detroit Lakes, MN were cardiac procedures, ultrasound (sonogram), stress testing and inpatient care.

blood draw	19
cardiac procedures	978
cardioversion	39
catheterization	81
diagnostic procedures	81
doctor visit	935
hospital care	93
implant surgery	46
implantable cardioverter-defibrillator (ICD) replacement	12
inpatient care	93
minimally invasive procedures	90
stress testing	109
ultrasound (sonogram)	900
vascular procedures	81

Average Medicare Patient Data From 2012 - 2022

Information about Medicare patients treated by Dr. John J. Ragan, MD.

**Gender**
Male	956
Female	1017

**Ethnicity**
Black / African American	8
Asian / Pacific Islander	3
Non-Hispanic White	1841
Hispanic	13
Native American / Alaskan Native	55
Other	38

**Age**
75 to 84	636
85 and over	388
Less than 65	221
65 to 74	727

Average of Total of Conditions of Medicare patients treated by Dr. John J. Ragan, MD From 2012 - 2022

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

Hypertension	64
High Cholesterol	58
Stroke	7
Ischemic Heart Disease	48
Depression	25
Chronic Kidney Disease	37
Asthma	8
Osteoporosis	8
Heart Failure	33
Chronic Obstructive Pulmonary Disease	19
Diabetes	30
Atrial Fibrillation	25
Cancer	11
Dementia	9

Education & Training

Dr. John J. Ragan, MD graduated from New York Medical College. He completed residency at Naval Medical Center Portsmouth. He is certified by the American Board of Internal Medicine and has a state license in North Dakota.

Medical School: New York Medical College

Residency: Naval Medical Center Portsmouth

Board Certification: American Board of Internal Medicine

Licensed In: North Dakota

Affiliations & Hospitals

Dr. John J. Ragan, MD is associated with these hospitals and organizations:

Essentia Health

ST MARYS REGIONAL HEALTH CENTER

INNOVIS HEALTH LLC

Ratings & Reviews

Dr. John J. Ragan, MD has an exceptional overall rating with an average of 4.8 out of 5 stars based on 347 ratings. We collect ratings and reviews of Dr. John J. Ragan, MD from all over the web to help you find the right in Detroit Lakes, MN.

4.8

Overall Rating

(347 Ratings)

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Reviews From Around The Web

Overall Rating: 5.0 2025-08-23