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Dr. Lawrence R. Keenan, MD

(Dr. Lawrence Ray Keenan, M.D.)

(No ratings)

Specializes in: Adult Cardiology

University of Iowa, Carver College of Medicine (1993)

Professional interests include: heart rhythm disorders, cardiomyopathy, heart valve disease, and more.

200 1st Street Sw
Rochester, MN 55905

(507) 284-2511

Dr. Lawrence R. Keenan, MD is a cardiologist in Austin, MN specializing in adult cardiology. He graduated from University of Iowa, Carver College of Medicine in 1993 and has 33 years of experience. Dr. Lawrence R. Keenan, MD is affiliated with Mayo Clinic.

Office Locations

1000 1st Drive Nw
Austin, MN 55912

(507) 433-7351

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200 1st Street Sw
Rochester, MN 55905

(507) 284-2511

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Rochester, MN

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Some issues Dr. Lawrence R. Keenan, 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 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. Lawrence R. Keenan, MD in 2023

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

Top 25%

By Volume:

Doppler echocardiography

echocardiogram

ultrasound

In 2012, Dr. Lawrence R. Keenan, MD performed more Doppler echocardiography, echocardiogram (echo), and ultrasound (sonogram) procedures for Medicare patients than 75% of providers in related specialties within Minnesota.

Medicare Procedure and Patient Information

2012 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2012 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	496
doctor visit	316
hospital care	48
inpatient care	48
stress testing	95
ultrasound (sonogram)	482

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2013 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	446
doctor visit	437
hospital care	22
inpatient care	22
stress testing	67
ultrasound (sonogram)	427

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	306
Female	318

**Ethnicity**
Non-Hispanic White	613
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	143
From 75 to 84	239
85 and over	198
Less than 65	44

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2013

Hypertension	75
High Cholesterol	73
Stroke	6
Ischemic Heart Disease	55
Depression	22
Chronic Kidney Disease	29
Asthma	6
Osteoperosis	8
Atrial Fibrilation	29
Heart Failure	40
Chronic Obstructive Pulmonary Disease	21
Diabetes	29
Dementia	11
Cancer	13

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2014 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	569
doctor visit	490
hospital care	23
inpatient care	23
stress testing	81
ultrasound (sonogram)	556

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	340
Female	366

**Ethnicity**
Non-Hispanic White	695
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	152
From 75 to 84	262
85 and over	230
Less than 65	62

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2014

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	60
Depression	23
Chronic Kidney Disease	33
Asthma	8
Osteoperosis	8
Atrial Fibrilation	26
Heart Failure	42
Chronic Obstructive Pulmonary Disease	20
Diabetes	34
Dementia	10
Cancer	12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2015 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	472
doctor visit	396
stress testing	67
ultrasound (sonogram)	458

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	578
Female	614

**Ethnicity**
Non-Hispanic White	1158
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	328
From 75 to 84	400
85 and over	386
Less than 65	78

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2015

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	59
Depression	22
Chronic Kidney Disease	39
Asthma	14
Osteoperosis	10
Atrial Fibrilation	28
Heart Failure	42
Chronic Obstructive Pulmonary Disease	22
Diabetes	32
Dementia	11
Cancer	12

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2016 were ultrasound (sonogram), cardiac procedures and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	442
doctor visit	421
stress testing	49
ultrasound (sonogram)	442

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	290
Female	332

**Ethnicity**
Non-Hispanic White	607
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	156
From 75 to 84	218
85 and over	199
Less than 65	49

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2016

Hypertension	75
High Cholesterol	75
Stroke	7
Ischemic Heart Disease	58
Depression	29
Chronic Kidney Disease	45
Asthma	26
Osteoperosis	9
Atrial Fibrilation	32
Heart Failure	44
Chronic Obstructive Pulmonary Disease	22
Diabetes	33
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2017 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	372
doctor visit	394
stress testing	62
ultrasound (sonogram)	351

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	263
Female	281

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

**Age**
From 65 to 74	131
From 75 to 84	195
85 and over	171
Less than 65	47

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2017

Hypertension	75
High Cholesterol	75
Stroke	8
Ischemic Heart Disease	59
Depression	22
Chronic Kidney Disease	45
Asthma	9
Osteoperosis	14
Atrial Fibrilation	34
Heart Failure	46
Chronic Obstructive Pulmonary Disease	23
Diabetes	30
Dementia	17
Cancer	12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2018 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	413
doctor visit	357
stress testing	60
ultrasound (sonogram)	393

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	281
Female	264

**Ethnicity**
Non-Hispanic White	520
Black	0
Hispanic	11
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	142
From 75 to 84	189
85 and over	159
Less than 65	55

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2018

Hypertension	75
High Cholesterol	66
Stroke	10
Ischemic Heart Disease	60
Depression	21
Chronic Kidney Disease	49
Asthma	9
Osteoperosis	10
Atrial Fibrilation	34
Heart Failure	47
Chronic Obstructive Pulmonary Disease	21
Diabetes	36
Dementia	18
Cancer	14

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2019 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	744
doctor visit	512
stress testing	126
ultrasound (sonogram)	700

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	515
Female	426

**Ethnicity**
Non-Hispanic White	901
Black	0
Hispanic	16
Asian	0
Other	12
Native American	0

**Age**
From 65 to 74	259
From 75 to 84	352
85 and over	266
Less than 65	64

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2019

Hypertension	75
High Cholesterol	70
Stroke	11
Ischemic Heart Disease	55
Depression	22
Chronic Kidney Disease	51
Asthma	9
Osteoperosis	9
Atrial Fibrilation	32
Heart Failure	46
Chronic Obstructive Pulmonary Disease	21
Diabetes	35
Dementia	14
Cancer	13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2020 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	508
doctor visit	467
stress testing	75
ultrasound (sonogram)	474

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	344
Female	329

**Ethnicity**
Non-Hispanic White	649
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	224
From 75 to 84	232
85 and over	180
Less than 65	37

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2020

Hypertension	75
High Cholesterol	71
Stroke	7
Ischemic Heart Disease	59
Depression	21
Chronic Kidney Disease	55
Asthma	7
Osteoperosis	7
Atrial Fibrilation	32
Heart Failure	47
Chronic Obstructive Pulmonary Disease	20
Diabetes	29
Dementia	13
Cancer	12

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and cardioversion.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	607
cardioversion	11
doctor visit	514
stress testing	90
ultrasound (sonogram)	568

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	400
Female	369

**Ethnicity**
Non-Hispanic White	738
Black	0
Hispanic	13
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	240
From 75 to 84	262
85 and over	205
Less than 65	62

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2021

Hypertension	75
High Cholesterol	71
Stroke	9
Ischemic Heart Disease	58
Depression	25
Chronic Kidney Disease	62
Asthma	8
Osteoperosis	9
Atrial Fibrilation	33
Heart Failure	45
Chronic Obstructive Pulmonary Disease	20
Diabetes	35
Dementia	14
Cancer	10

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and cardioversion.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	552
cardioversion	12
doctor visit	436
stress testing	88
ultrasound (sonogram)	520

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	380
Female	336

**Ethnicity**
Non-Hispanic White	695
Black	0
Hispanic	0
Asian	0
Other	0
Native American	0

**Age**
From 65 to 74	213
From 75 to 84	256
85 and over	205
Less than 65	42

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2022

Hypertension	75
High Cholesterol	75
Stroke	13
Ischemic Heart Disease	53
Depression	23
Chronic Kidney Disease	56
Asthma	8
Osteoperosis	15
Atrial Fibrilation	44
Heart Failure	45
Chronic Obstructive Pulmonary Disease	23
Diabetes	32
Dementia	10
Cancer	16

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN during 2023 were cardiac procedures, ultrasound (sonogram) and stress testing.

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

cardiac procedures	462
doctor visit	361
stress testing	57
ultrasound (sonogram)	441

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	343
Female	297

**Ethnicity**
Non-Hispanic White	617
Black	0
Hispanic	0
Asian	0
Other	11
Native American	0

**Age**
From 65 to 74	180
From 75 to 84	242
85 and over	180
Less than 65	38

Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD in 2023

Hypertension	75
High Cholesterol	75
Stroke	11
Ischemic Heart Disease	53
Depression	24
Chronic Kidney Disease	58
Asthma	10
Osteoperosis	16
Atrial Fibrilation	47
Heart Failure	48
Chronic Obstructive Pulmonary Disease	25
Diabetes	33
Dementia	9
Cancer	17

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2023

Volume of procedures performed by Dr. Lawrence R. Keenan, MD for Medicare patients.

The highest averages for the top procedures that Dr. Lawrence R. Keenan, MD treated as a cardiologist in Austin, MN were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

cardiac procedures	506
cardioversion	11
doctor visit	425
hospital care	31
inpatient care	31
stress testing	76
ultrasound (sonogram)	484

Average Medicare Patient Data From 2012 - 2023

Information about Medicare patients treated by Dr. Lawrence R. Keenan, MD.

**Gender**
Male	336
Female	327

**Ethnicity**
Black / African American	0
Asian / Pacific Islander	0
Non-Hispanic White	643
Hispanic	3
Native American / Alaskan Native	0
Other	1

**Age**
75 to 84	237
85 and over	198
Less than 65	48
65 to 74	180

Average of Total of Conditions of Medicare patients treated by Dr. Lawrence R. Keenan, MD From 2012 - 2023

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

Hypertension	68
High Cholesterol	66
Stroke	8
Ischemic Heart Disease	52
Depression	21
Chronic Kidney Disease	43
Asthma	9
Osteoporosis	9
Heart Failure	41
Chronic Obstructive Pulmonary Disease	19
Diabetes	29
Atrial Fibrillation	30
Cancer	12
Dementia	11

Education & Training

Dr. Lawrence R. Keenan, MD graduated from University of Iowa, Carver College of Medicine in 1993. He completed residency at Abbott Northwestern Hospital. He is certified by the Internal Medicine American Board of Internal Medicine and has a state license in Minnesota.

Medical School: University of Iowa, Carver College of Medicine (1993)

Residency: Abbott Northwestern Hospital (1996)

Board Certification: Internal Medicine American Board of Internal Medicine (1996)

Licensed In: Minnesota

Affiliations & Hospitals

Dr. Lawrence R. Keenan, MD is associated with these hospitals and organizations:

Mayo Clinic

Ratings & Reviews

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Ownership and Interest Payments

This table describes ownership payments received by Dr. Lawrence R. Keenan, MD.

Sonex Health, Inc.	2024	$58,999.92	Physician Covered Recipient	Common Stock
Sonex Health, Inc.	2023	$54,930.96	Physician Covered Recipient	Common Stock

Biography

Dr. Lawrence Keenan specializes in adult cardiology and practices in Austin, MN and Rochester, MN. Dr. Keenan's areas of expertise include the following: anticoagulants (blood thinners), community health issues, and heart valve disease. He is affiliated with Mayo Clinic Health System - Fairmont. He graduated from the University of Iowa, Carver College of Medicine and then he performed his residency at Abbott Northwestern Hospital. Awards and/or distinctions he has received include Graduated - Mayo Clinic Leadership Program (LEAD) and Bachelor of Science in Microbiology with Honors - College of Liberal Arts, University of Iowa.