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Department Cardiovascular Medicine
Primary Location Hillcrest Medical Building 2
Type of Doctor Adults Only
Languages English, Hindi, Kannada
Surgeon No
Hillcrest Medical Building 2
Primary Location

Hillcrest Medical Building 2


Additional Locations

Specialties & Treatments

Treatment & Services

  • Cardiovascular Medicine Department
  • Regional Heart and Vascular
View all 2 Treatment & Services +


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About T. Mark Sequeira, MD

T Mark Sequeira, MD, is an interventional cardiologist in the Robert and Suzanne Tomsich Department of Cardiovascular Medicine in the Sydell and Arnold Miller Family Heart, Vascular & Thoracic Institute. He is board certified in internal medicine and cardiovascular disease.

Dr. Sequeira earned his medical degree from St. John’s Medical College of Bangalore University in his native country of India. He began his post-graduate training in psychiatry at St. John’s Medical College and All India Institute of Mental Health in Bangalore, India. 

In 1974 he relocated to the United States to become a resident in internal medicine at St. Luke’s Hospital, Cleveland. After completing his residency he continued at St. Luke’s as a fellow in cardiology while working part-time as an emergency medicine physician. He completed his training in cardiology with a three-year fellowship at Lenox Hill Hospital-St. Mary’s Hospital, New York.

Dr. Sequeira joined Cleveland Clinic in 2013 from private practice with Northern Ohio Medical Services, Inc. in Cleveland. He has been affiliated with Cleveland Clinic Hillcrest Hospital and previously was director of the Cardiac Catheterization Lab at St. Luke’s Hospital and an assistant clinical professor, Case Western Reserve University School of Medicine.

He is a member of the American College of Cardiology, American Society of Echocardiography and the Cleveland Academy of Medicine.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Lenox Hill Hospital
New York, NY USA

Fellowship - Saint Luke's Medical Center
Cleveland, OH USA

Residency - Saint Luke's Medical Center
Internal Medicine
Cleveland, OH USA

Internship - St. Luke`s Hospital
Internal Medicine
Cleveland, OH USA

Medical Education - All India Institute of Mental Health
Post Graduation in Psychiatry

Residency - Saint John's Medical College
Senior House Officer

Medical Education - Saint John's Medical College

Additional Training

Professional Highlights


  • Internal Medicine
  • Internal Medicine - Cardiovascular Disease

Specialty Interests

cardiac catheterizations and coronary intervention, nuclear stress testing, echocardiography, cardioversions

Awards & Honors

Innovations & Patents


  • American College of Cardiology
  • American Society of Echocardiography
  • Cleveland Academy of Medicine
Research & Publications

Research & Publications

See publications for T. Mark Sequeira, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 7/2/2021, Dr. Sequeira has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

240 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.8 out of 5
Explains 4.8
Courtesy, Respect & Concern 4.8
Patient Rating of Doctor 4.8

29 Patient Comments

Reviewed on Sep 24, 2021

Dr Sequeira is very very good and competent. He answers my questions in a very knowledgeable manner.

Reviewed on Aug 11, 2021

I have already told many friends how happy I am with Dr Sequiera.

Reviewed on Jul 22, 2021

The staff and Dr. Were very courteous.

Reviewed on Jul 22, 2021

My first visit with this provider was very good

Reviewed on Jul 14, 2021

Provider did not have test and info from primary care Dr. So limited in history. Ignored spouse in the room. I considered the visit perfunctory

Reviewed on Jul 8, 2021

Always a pleasure to talk with Dr. Sequeira as he shows an interest in my everyday life.

Reviewed on Jul 8, 2021

He is a very kind physician

Reviewed on Jun 25, 2021

First of all very good doctor caring and sincere

Reviewed on Jun 18, 2021


Reviewed on Jun 17, 2021

Staff very friendly and helpful,Dr Sequeira is compassionate, understanding,Mainly he Listens. l have the most respect for Dr. Sequeira

Reviewed on May 25, 2021

Great Doctor ... Girl at the front desk was really nice and kind.

Reviewed on May 21, 2021

my doctor is very courteous and very concerned when I ask a question. He is extremely knowledgeable

Reviewed on May 21, 2021

Dr Sequeira and all of his staff are caring and very professional we have always been pleased in the 20 years he has been our Dr.

Reviewed on Apr 29, 2021

Dr. Sequira has my upmost respect.

Reviewed on Apr 21, 2021

Dr. Sequeira was excellent.

Reviewed on Apr 21, 2021

Every one in Dr. Sequeira has always been very helpful, friendly and returns call in a timely matter.

Reviewed on Mar 24, 2021

dr. sequiera sat and listened to all the details I provided and asked good questions to fully understand what happened and was very through and reassuring.

Reviewed on Mar 23, 2021

Good in informing me what was next and how to schedule. Good information from the doctor.

Reviewed on Mar 22, 2021

I have always had and believe I ;will always have a great experience with Dr. Sequeria and his staff. He is one of the doctors that will listen and give suggestions on how to keep your self healthy.

Reviewed on Mar 10, 2021

Dr was very thorough explained everything and showed concern

Reviewed on Mar 9, 2021

*Dr. Sequeira is a very caring, wonderful doctor who always puts me at ease.

Reviewed on Mar 8, 2021

Very pleased with Dr Sequeira

Reviewed on Feb 19, 2021

As usual, Dr. Sequeira was easy to talk to and answered all questions and concerns.

Reviewed on Feb 16, 2021

Dr Sequiera and his assistants are excellent

Reviewed on Feb 2, 2021

great doc and nurse

Reviewed on Jan 26, 2021

don't want the third party dictating my concerns with the doctor

Reviewed on Dec 8, 2020

Dr. Sequeira is very thorough & explains things well. The nurses/technicians who did my echo & ekg were very nice too.

Reviewed on Dec 8, 2020

Very helpful... Gave dr. name to _____ so far.

Reviewed on Dec 2, 2020

Dr. Securitate and his nurse are great! He treated me years ago in an emergency situation and was excellent which is why I looked him up again to be my cardiologist.

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