Highlights
Age Groups Seen
- Adult
Languages
- Korean
- German
- English
Gender
MaleAbout Sunguk Jang
Biography
Sunguk Jang, MD, is a Staff physician in the Department of Gastroenterology and Hepatology at Cleveland Clinic's Main Campus. Dr. Jang is board-certified in gastroenterology and internal medicine.
Dr. Jang's interests include: Barretts esophagus, pancreatic and biliary disease, colon cancer screening, endoscopic ultrasound of esophageal, gastric and pancreatic disease and capsule endoscopy.
Education & Board Certifications
Education
- Fellowship: Cleveland Clinic, 2007
- Fellowship: Drexel University College of Medicine, 2006
- Residency: University of Maryland Hospital, 2002
- Medical Education: University of Maryland Medical Center, 1999
- Undergraduate: University of Michigan, 1994
Board Certifications
- Gastroenterology: American Board of Internal Medicine, 2006
Professional Memberships
Research & Publications
See publications for this provider. (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
Cleveland Clinic physicians and scientists collaborate with industry to advance medical breakthroughs. These partnerships help commercialize discoveries for public benefit while maintaining scientific integrity. To ensure transparency and minimize potential bias, Cleveland Clinic reviews these relationships and publicly discloses when physicians/scientists receive significant compensation for consulting, serve in fiduciary roles, receive royalties, or hold equity interests related to their work. We manage potential conflicts through approval processes, annual reporting, and targeted management plans.
As of 2025-12-09, Dr. Jang has reported the financial relationships with the companies listed below.
Donation of Financial Interest. Dr. Jang has consulted for, received compensation for serving as a fiduciary from, or received royalties from the following companies but instructed them to donate all compensation to not-for-profit causes or to the Cleveland Clinic to support research and education:
- STERIS Corporation
Consulting and/or Speaking. Dr. Jang receives fees of $5,000 or more per year (or, in rare cases, equity or stock options) as a paid consultant, speaker or as a member of an advisory committee for the following companies:
- STERIS Corporation
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.
Insurances Accepted
Video
Ratings & Reviews
4.6 out of 5
38 ratings, 7 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 4/6/2026
Dr. Jang is top notch. He is very knowledgeable, listens, explains everything, very nice, etc.. I would highly recommend him to everyone.
- 5 out of 5 starsReviewed on 3/31/2026
Dr Jang''s is very caring & professional. His explanations, concerns & suggested treatment make me realize he is a good doctor for me. His assistant is also good about answering & forwarding any messages that I send thru MyChart. I hope we can continue patient doctor relationship. I am very grateful for Dr Jang, his assistant & Cleveland clinic!
- 5 out of 5 starsReviewed on 7/28/2025
Dr. Jang and his staff are INCREDIBLE!
- 5 out of 5 starsReviewed on 7/2/2025
Dr. Jang is amazing. He is very knowledgeable, listens to my concerns, answers my questions, explains the current conditions and discusses options, and includes me in the decisions of my care. I would highly recommend Dr. Jang.
- 5 out of 5 starsReviewed on 6/10/2025
Great communication from Dr. Yang's team!
- 5 out of 5 starsReviewed on 6/9/2025
Dr. Yang was excellent and is always concerned for my well-being.
- 5 out of 5 starsReviewed on 5/19/2025
Dr. Jang is very attentive and thorough. He takes his time, makes sure you understand everything that's going on. He includes me in the decisions being made. He's worth the wait time it sometimes takes to get in.