Thangam Venkatesan

Thangam Venkatesan, MD

  • Gastroenterology
  • Physician

Professor of Internal Medicine

Accepting new patients
4.4 out of 5
  • 44 Patient Satisfaction Ratings
  • 16 Patient Comments

Insurances We Accept


About Me

As a gastroenterologist, I’m passionate about improving the lives of my patients. I’m a professor of Clinical Medicine in the Division of Gastroenterology, Hepatology and Nutrition at The Ohio State University Wexner Medical Center, and excited to lead the Neurogastroenterology and Motility section. I treat a broad range of conditions, including disorders of gut-brain interaction (DGBI) as well as motility disorders that affect the function of the GI system.

However, the primary focus of my clinical and scientific work is in disorders of vomiting, specifically a condition called cyclic vomiting syndrome (CVS). My research is focused in understanding the cause for CVS and developing better therapies to treat this disorder. I was the lead author on the first-ever guidelines on the management of CVS, which is an important milestone that should help improve the lives of these patients. I’m also involved in multiple key clinical trials and studies in CVS with many exciting advances in the pipeline. I serve as one of the chief medical advisors to the Cyclic Vomiting Syndrome Association (CVSA), a nonprofit organization that serves to help patients with this condition. I also collaborate with other nonprofit organizations such as the International Foundation of Functional Gastrointestinal Disorders (IFFGD) and help with education, dissemination of information and research.

I enjoy working in academic medicine and helping to train the next generation of physicians. I mentor medical students, residents and junior faculty members, and help them with their professional and personal development.

When I’m not working, I love spending time with family and friends. I enjoy traveling and gardening. I also serve as a meditation instructor.
  • Best Doctors of America: 2009-2011, 2015-2020
  • Chief Medical Advisor: Cyclic Vomiting Syndrome Association (2009-present)
  • Chair of Guidelines Committee: Management of Cyclic Vomiting Syndrome in Adults
  • Inaugural recipient of the American Gastroenterological Association’s Maria A. Leo-Lieber Scholarship, 2021
  • Named to Castle Connolly's Regional Top Doctors list

Procedures and Conditions I Treat

  • Vomiting
  • Nausea
  • Constipation
  • Diarrhea
  • Gastrointestinal Diseases

Locations Where I Practice

Please note: Not all physicians schedule patients at each listed location.

Education and Training

Education History

Medical School

Kilpauk Medical College, Chennai 600 010
7/1/1986 - 4/30/1992


Kilpauk Medical College, Chennai 600 010
1/1/1991 - 12/31/1993


University of Connecticut Health Center, Farmington, CT
7/1/1994 - 6/1/1996


University of Cincinnati Medical Center, Cincinnati, OH
6/1/1996 - 8/14/1997


University of Cincinnati Medical Center, Cincinnati, OH
8/15/1997 - 8/15/2000

Board Certification

American Board of Internal Medicine/Gastroenterology

Academic Information

My Department

Internal Medicine

My Division

Gastroenterology, Hepatology and Nutrition


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.

44 Patient Satisfaction Reviews

  • Overall
    4.4 out of 5
  • Explains Things Carefully
    4.7 out of 5
  • Listens Carefully
    4.6 out of 5
  • Gives Understandable Instructions
    4.5 out of 5
  • Knows My Medical History
    4.1 out of 5
  • Shows Respect
    4.6 out of 5
  • Time Spent Together
    4.4 out of 5
  • Reviewed on Sep 15, 2023

    Dr. V. is one of the best. She speaks in terms we can understand and shows honest concern for me as her patient. One of the best drs. I have ever seen.

  • Reviewed on Aug 19, 2023

    I loved her...she was so understanding and very aware of my situation and came up with a plan and alternative options

  • Reviewed on Aug 11, 2023

    Love, Love Venkatesan; she is the only specialist I know who can treat my disease. My gastro dr. told me my disease warrants seeing her. She cares so much and really tries to help me and to improve what I can with my episodes. Her research is very valuable to my care ad my primary care dr. She always takes time and shows concern for my OVERALL wellbeing not just treating my syndrome.

  • Reviewed on Aug 07, 2023

    She was friendly.

  • Reviewed on Aug 04, 2023

    Gave me undivided attention, listened well, did not feel hurried.

  • Reviewed on Jul 23, 2023

    Dr. V listened to my issue. She is a very caring doctor.

  • Reviewed on Jul 10, 2023

    Honestly, I can not say enough good things about Dr. V., she is a class act. So happy I found her at OSU, she cares very much about me and my CVS condition. Takes time to answer all of my questions and concerns. wish I would have found her 5 years ago. Just today a nurse from her office called me to inform me that Dr. V. had been working with my insurance provider to get me a new medication. I'm so grateful to her and her staff for helping me deal with insurance obstacles. Additionally, her office staff and Dr. V. are always quick to reply to MyChart questions.

  • Reviewed on Apr 08, 2023

    Very good

Consulting and Related Relationships

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 09/29/2023, Dr. Venkatesan has reported no relationships with companies or entities.