Heart and Vascular Care
Tower 12th Floor, Suite 1201
Columbus, OH 43203
Physician, Assistant Professor
Cardiovascular Disease
Department: Internal Medicine
I am an assistant professor of clinical medicine at The Ohio State University Wexner Medical Center.
I earned my medical degree in internal medicine and cardiology at The University of Mumbai in Mumbai, India. I completed my residency in internal medicine at The Ohio State University College of Medicine and my residency in internal medicine and geriatrics at Kettering General Hospital in Northamptonshire, United Kingdom. I also completed fellowships in cardiology at the University of Mumbai and at Ohio State’s College of Medicine.
I am fluent in Hindi and English, and my focus is on clinical cardiology.
Please note: Not all physicians schedule patients at each listed location.
I am a member of several professional societies, including the Royal College of Physicians in London, England and the American Heart Association–Basic Life Support Program and Advanced Cardiovascular Life Support Program.

The overall patient satisfaction rating is an average of all patient responses to the six doctor communication related questions shown below from the Clinician and Group Consumer Assessment of Healthcare Providers and Systems survey. For additional information about the patient satisfaction survey, please visit our Patient Satisfaction Survey page.
The comments are submitted by patients and reflect their view and opinions. The comments are not endorsed by and do not necessarily reflect the views of Ohio State Wexner Medical Center.
At The Ohio State University Wexner Medical Center, we support a faculty member’s research and consulting in collaboration with medical device, research and/or drug companies because a faculty member’s expertise can guide important advancements in the practice of medicine and improve patient care. In order to provide effective management of these relationships, the University requires annual disclosures from all faculty members with external interests related to their University responsibilities.
As of 11/3/2025, Unni Krishnan Marar has reported no relationships with companies or entities.
Everything went well
Good
Good
All good
Great M.D.
He is always nice and caring
Excellent. Courteous, thorough and friendly.
Good
Dr. Marar was extremely kind and accommodating in helping me receive a next day heart cath! This allowed me to continue with a planed lobectomy the following day.
Nothing bad
Dr.Marar had reviewed my chart/case thoroughly and was very patient when explaining his thoughts with me.
Warm professionalism. Truly concerned re my health
Good
Listened to what I said and was very clear on what we should do
He is always kind and patient with me and I never feel rushed
He was great