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Dr. Unni Krishnan Marar, MBBS, MD

Accepting New Patients
(Unnikrishnan K. Marar, MD)
Specializes in: Adult Cardiology
L.T. Municipal Medical College
Professional interests include: high cholesterol (hyperlipidemia), hypertension (high blood pressure), echocardiogram (echo), and more.
181 Taylor Avenue
Columbus, OH 43203

Dr. Unni Krishnan Marar, MBBS, MD is a cardiologist in Columbus, OH specializing in adult cardiology. He graduated from L.T. Municipal Medical College. Dr. Unni Krishnan Marar, MBBS, MD is affiliated with Ohio State University Wexner Medical Center.

View Doctor's Full Profile (614) 257-3000

Office Locations

181 Taylor Avenue
Columbus, OH 43203
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1492 East Broad Street
Columbus, OH 43205
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543 Taylor Avenue
Columbus, OH 43203
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Some issues Dr. Unni Krishnan Marar, MBBS, MD can help you with:

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. Unni Krishnan Marar, MBBS, MD in 2024

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

Top 25%

By Affordability:

cardiac imaging
cardiac procedures

In 2012, Dr. Unni Krishnan Marar, MBBS, MD had a list price for cardiac imaging, and cardiac procedures that was lower than the list prices billed to Medicare by 75% of providers in related specialties within Ohio. 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. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2012 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 608
doctor visit 228
hospital care 264
inpatient care 264
minimally invasive procedures 25
pulmonary testing 14
stress testing 130
ultrasound (sonogram) 527

Medicare Procedure and Patient Information

2013 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2013 were cardiac procedures, ultrasound (sonogram), hospital care and inpatient care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 684
doctor visit 302
hospital care 260
inpatient care 260
minimally invasive procedures 11
nuclear scan 47
pulmonary testing 17
stress testing 187
ultrasound (sonogram) 546

2013 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 757
Female 903
Ethnicity
Non-Hispanic White 795
Black 810
Hispanic 14
Asian 0
Other 25
Native American 0
Age
From 65 to 74 479
From 75 to 84 282
85 and over 141
Less than 65 758

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2013

Hypertension 75
High Cholesterol 66
Stroke 9
Ischemic Heart Disease 55
Depression 42
Chronic Kidney Disease 51
Asthma 20
Osteoperosis 7
Atrial Fibrilation 15
Heart Failure 40
Chronic Obstructive Pulmonary Disease 34
Diabetes 51
Dementia 16
Cancer 12

Medicare Procedure and Patient Information

2014 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2014 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 792
doctor visit 301
hospital care 244
inpatient care 244
minimally invasive procedures 11
nuclear scan 135
pulmonary testing 15
stress testing 304
ultrasound (sonogram) 528

2014 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 735
Female 804
Ethnicity
Non-Hispanic White 730
Black 752
Hispanic 22
Asian 0
Other 20
Native American 0
Age
From 65 to 74 466
From 75 to 84 238
85 and over 127
Less than 65 708

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2014

Hypertension 75
High Cholesterol 66
Stroke 10
Ischemic Heart Disease 56
Depression 44
Chronic Kidney Disease 52
Asthma 20
Osteoperosis 8
Atrial Fibrilation 14
Heart Failure 43
Chronic Obstructive Pulmonary Disease 34
Diabetes 51
Dementia 15
Cancer 12

Medicare Procedure and Patient Information

2015 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2015 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 631
doctor visit 315
hospital care 146
inpatient care 146
nuclear scan 109
pulmonary testing 20
stress testing 229
ultrasound (sonogram) 422

2015 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 1376
Female 1380
Ethnicity
Non-Hispanic White 1432
Black 1208
Hispanic 42
Asian 0
Other 50
Native American 0
Age
From 65 to 74 868
From 75 to 84 476
85 and over 214
Less than 65 1198

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2015

Hypertension 75
High Cholesterol 66
Stroke 11
Ischemic Heart Disease 55
Depression 44
Chronic Kidney Disease 55
Asthma 29
Osteoperosis 8
Atrial Fibrilation 16
Heart Failure 43
Chronic Obstructive Pulmonary Disease 33
Diabetes 47
Dementia 15
Cancer 11

Medicare Procedure and Patient Information

2016 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2016 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 782
doctor visit 466
hospital care 192
inpatient care 192
nuclear scan 150
pulmonary testing 24
stress testing 291
ultrasound (sonogram) 518

2016 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 860
Female 932
Ethnicity
Non-Hispanic White 883
Black 852
Hispanic 19
Asian 0
Other 23
Native American 0
Age
From 65 to 74 579
From 75 to 84 351
85 and over 155
Less than 65 707

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2016

Hypertension 75
High Cholesterol 66
Stroke 9
Ischemic Heart Disease 55
Depression 42
Chronic Kidney Disease 57
Asthma 38
Osteoperosis 8
Atrial Fibrilation 15
Heart Failure 40
Chronic Obstructive Pulmonary Disease 34
Diabetes 49
Dementia 19
Cancer 11

Medicare Procedure and Patient Information

2017 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2017 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 748
doctor visit 426
hospital care 213
inpatient care 213
nuclear scan 185
pulmonary testing 17
stress testing 324
ultrasound (sonogram) 466

2017 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 904
Female 985
Ethnicity
Non-Hispanic White 978
Black 854
Hispanic 0
Asian 0
Other 31
Native American 0
Age
From 65 to 74 691
From 75 to 84 391
85 and over 181
Less than 65 626

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2017

Hypertension 75
High Cholesterol 65
Stroke 9
Ischemic Heart Disease 56
Depression 40
Chronic Kidney Disease 59
Asthma 17
Osteoperosis 10
Atrial Fibrilation 18
Heart Failure 43
Chronic Obstructive Pulmonary Disease 32
Diabetes 47
Dementia 21
Cancer 12

Medicare Procedure and Patient Information

2018 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2018 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 838
doctor visit 482
hospital care 228
inpatient care 228
minimally invasive procedures 13
nuclear scan 169
pulmonary testing 26
stress testing 332
ultrasound (sonogram) 546

2018 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 932
Female 1060
Ethnicity
Non-Hispanic White 1089
Black 821
Hispanic 20
Asian 14
Other 48
Native American 0
Age
From 65 to 74 718
From 75 to 84 420
85 and over 181
Less than 65 673

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2018

Hypertension 75
High Cholesterol 67
Stroke 10
Ischemic Heart Disease 57
Depression 45
Chronic Kidney Disease 58
Asthma 14
Osteoperosis 9
Atrial Fibrilation 18
Heart Failure 43
Chronic Obstructive Pulmonary Disease 31
Diabetes 47
Dementia 21
Cancer 11

Medicare Procedure and Patient Information

2019 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2019 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 560
doctor visit 376
hospital care 196
inpatient care 196
nuclear scan 111
pulmonary testing 16
stress testing 223
ultrasound (sonogram) 370

2019 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 840
Female 994
Ethnicity
Non-Hispanic White 1025
Black 732
Hispanic 17
Asian 0
Other 45
Native American 0
Age
From 65 to 74 720
From 75 to 84 400
85 and over 186
Less than 65 528

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2019

Hypertension 75
High Cholesterol 67
Stroke 9
Ischemic Heart Disease 56
Depression 46
Chronic Kidney Disease 56
Asthma 14
Osteoperosis 10
Atrial Fibrilation 16
Heart Failure 40
Chronic Obstructive Pulmonary Disease 29
Diabetes 45
Dementia 21
Cancer 13

Medicare Procedure and Patient Information

2020 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2020 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 438
doctor visit 261
hospital care 138
inpatient care 138
nuclear scan 77
stress testing 173
ultrasound (sonogram) 309

2020 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 705
Female 725
Ethnicity
Non-Hispanic White 820
Black 546
Hispanic 0
Asian 0
Other 44
Native American 0
Age
From 65 to 74 589
From 75 to 84 321
85 and over 143
Less than 65 377

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2020

Hypertension 75
High Cholesterol 68
Stroke 7
Ischemic Heart Disease 58
Depression 42
Chronic Kidney Disease 56
Asthma 13
Osteoperosis 9
Atrial Fibrilation 17
Heart Failure 41
Chronic Obstructive Pulmonary Disease 26
Diabetes 44
Dementia 21
Cancer 13

Medicare Procedure and Patient Information

2021 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2021 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 514
doctor visit 275
hospital care 174
inpatient care 174
nuclear scan 83
stress testing 178
ultrasound (sonogram) 371

2021 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 600
Female 576
Ethnicity
Non-Hispanic White 769
Black 347
Hispanic 0
Asian 15
Other 34
Native American 0
Age
From 65 to 74 525
From 75 to 84 274
85 and over 112
Less than 65 265

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2021

Hypertension 75
High Cholesterol 71
Stroke 9
Ischemic Heart Disease 61
Depression 40
Chronic Kidney Disease 54
Asthma 12
Osteoperosis 9
Atrial Fibrilation 20
Heart Failure 41
Chronic Obstructive Pulmonary Disease 23
Diabetes 45
Dementia 18
Cancer 14

Medicare Procedure and Patient Information

2022 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2022 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 494
doctor visit 283
hospital care 103
inpatient care 103
nuclear scan 74
stress testing 169
ultrasound (sonogram) 366

2022 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 531
Female 567
Ethnicity
Non-Hispanic White 738
Black 302
Hispanic 0
Asian 0
Other 40
Native American 0
Age
From 65 to 74 458
From 75 to 84 319
85 and over 97
Less than 65 224

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2022

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 50
Depression 37
Chronic Kidney Disease 37
Asthma 16
Osteoperosis 15
Atrial Fibrilation 31
Heart Failure 38
Chronic Obstructive Pulmonary Disease 26
Diabetes 43
Dementia 13
Cancer 18

Medicare Procedure and Patient Information

2023 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2023 were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 403
doctor visit 272
hospital care 103
inpatient care 103
nuclear scan 46
stress testing 117
ultrasound (sonogram) 326

2023 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 505
Female 524
Ethnicity
Non-Hispanic White 691
Black 271
Hispanic 0
Asian 0
Other 46
Native American 0
Age
From 65 to 74 429
From 75 to 84 303
85 and over 118
Less than 65 179

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2023

Hypertension 75
High Cholesterol 75
Stroke 13
Ischemic Heart Disease 52
Depression 37
Chronic Kidney Disease 38
Asthma 15
Osteoperosis 17
Atrial Fibrilation 33
Heart Failure 39
Chronic Obstructive Pulmonary Disease 24
Diabetes 44
Dementia 13
Cancer 17

Medicare Procedure and Patient Information

2024 Medicare Procedure Volume

The top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH during 2024 were cardiac procedures, ultrasound (sonogram), stress testing and nuclear scan.

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

cardiac procedures 455
doctor visit 297
hospital care 51
inpatient care 51
nuclear scan 66
stress testing 150
ultrasound (sonogram) 338

2024 Medicare Patient Data

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 484
Female 511
Ethnicity
Non-Hispanic White 685
Black 250
Hispanic 0
Asian 0
Other 42
Native American 0
Age
From 65 to 74 401
From 75 to 84 330
85 and over 106
Less than 65 158

Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD in 2024

Hypertension 75
High Cholesterol 75
Stroke 14
Ischemic Heart Disease 53
Depression 34
Chronic Kidney Disease 39
Asthma 13
Osteoperosis 17
Atrial Fibrilation 32
Heart Failure 39
Chronic Obstructive Pulmonary Disease 23
Diabetes 39
Dementia 12
Cancer 19

Medicare Procedure and Patient Information

Average Medicare Procedure Volume From 2012 - 2024

Volume of procedures performed by Dr. Unni Krishnan Marar, MBBS, MD for Medicare patients.

The highest averages for the top procedures that Dr. Unni Krishnan Marar, MBBS, MD treated as a cardiologist in Columbus, OH were cardiac procedures, ultrasound (sonogram), stress testing and hospital care.

cardiac procedures 611
doctor visit 329
hospital care 177
inpatient care 177
minimally invasive procedures 15
nuclear scan 104
pulmonary testing 18
stress testing 215
ultrasound (sonogram) 433

Average Medicare Patient Data From 2012 - 2024

Information about Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD.

Gender
Male 709
Female 766
Ethnicity
Black / African American 595
Asian / Pacific Islander 2
Non-Hispanic White 818
Hispanic 10
Native American / Alaskan Native 0
Other 34
Age
75 to 84 315
85 and over 135
Less than 65 492
65 to 74 532

Average of Total of Conditions of Medicare patients treated by Dr. Unni Krishnan Marar, MBBS, MD From 2012 - 2024

The highest averages of the most common conditions of Medicare patients that Dr. Unni Krishnan Marar, MBBS, MD treated were hypertension, high cholesterol, ischemic heart disease and chronic kidney disease.

Hypertension 69
High Cholesterol 63
Stroke 9
Ischemic Heart Disease 51
Depression 37
Chronic Kidney Disease 47
Asthma 17
Osteoporosis 9
Heart Failure 37
Chronic Obstructive Pulmonary Disease 26
Diabetes 42
Atrial Fibrillation 18
Cancer 12
Dementia 15

Education & Training

Dr. Unni Krishnan Marar, MBBS, MD graduated from L.T. Municipal Medical College. He completed residency at Internal Medicine: LTM Medical College and Hospitals. He is certified by the American Board of Internal Medicine/Cardiovascular Disease and has a state license in Ohio.

Medical School: L.T. Municipal Medical College

Residency: Internal Medicine: LTM Medical College and Hospitals (1979)

Board Certification: American Board of Internal Medicine/Cardiovascular Disease (2007)

Licensed In: Ohio

Ratings & Reviews

Dr. Unni Krishnan Marar, MBBS, MD has an exceptional overall rating with an average of 4.91 out of 5 stars based on 178 ratings. We collect ratings and reviews of Dr. Unni Krishnan Marar, MBBS, MD from all over the web to help you find the right in Columbus, OH. 

4.91
Overall Rating
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General Payments

These charts describe general payments received by Dr. Unni Krishnan Marar, MBBS, MD. Doctors may receive payments for a number of reasons, including meal compensation, travel compensation, and consulting.

Payments by Company
Lantheus Medical Imaging, Inc. $34 Definity
$34
ZOLL Services LLC (A/K/A ZOLL LifeCor Corp) $23 LifeVest
$23
Types of Payments
Food and Beverage $56

Biography

Unnikrishnan Marar, MBBS, is a cardiologist at the Ohio State Wexner Medical Center, specializing in clinical cardiology and echocardiography, with international training experience.

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