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Harish K. Gagneja, MD

Diplomate, American Board of Internal Medicine
Board Certified in Gastroenterology

Location:

Kyle , South - James Casey , St. David's Plaza , South - Barton Ridge

Additional Language(s):

Hindi, Punjabi, and Urdu

Meet Dr. Harish Gagneja

Dr. Harish Gagneja provides cutting-edge care in a patient-centered environment. Dr. Gagneja is an expert communicator and is known for his ability to break down the complex world of medical jargon into simple terms that his patients can easily understand, and for working with his patients to create a personalized treatment plan to achieve their health goals. Dr. Gagneja has a keen interest in evaluating newer endoscopy/GI technologies and incorporating them into his practice to help take care of his patients and frequently presents these emerging technologies at national meetings. Dr Gagneja, affectionately known as “Dr. G.”, and his handpicked team provide the very best care in GI and liver diseases.

Dr. Gagneja’s special interests include:

  • Screening colonoscopies, prevention of colorectal cancer
  • Barrett’s esophagus, with extensive experience in ablation/endoscopic mucosal resection
  • Non-surgical resection of large/complex polyps avoiding expensive surgeries and its associated short term and long-term complications
  • Inflammatory bowel disease (Crohn’s disease and ulcerative colitis)
    • Treatment of IBD
    • Cancer surveillance with chromoendoscopy technology
  • Office-based and hospital-based hemorrhoid treatment, avoiding painful surgery
  • Latest technology in endoscopy and GI

Before joining Austin Gastroenterology in 2004, Dr. Gagneja was Assistant Professor of Medicine and Co-Director of the GI fellowship program at University of Texas MD Anderson Cancer Center in Houston, where he was also a lead interventional endoscopist. He has published multiple abstracts, manuscripts, and book chapters, and has also presented at many national meetings. He has been voted on the Texas Super Doctors list yearly since 2012. He teaches medical students and residents at the Dell Medical School at UT Austin and was voted Consultant of the Year for 2003-2004.

He is a proud member of regional and national professional societies, including the Travis County Medical Society, Texas Medical Association, American College of Gastroenterology, American Gastroenterology Association, Crohn’s and Colitis Foundation, American Society of GI Endoscopy, and Texas Society of Gastroenterology and Endoscopy, where he has served as President. He was recently appointed Governor of the South Texas region of the American College of Gastroenterology. Since 2018, Austin Monthly has recognized Dr. Gagneja as a Top Doctor, an annual recognition of the best physicians in the Austin area as chosen by their peers. In 2022, Dr. Gagneja was awarded the Marcel Patterson – Robert Nelson Award by the Texas Society for Gastroenterology and Endoscopy for his outstanding contributions to the field of gastroenterology.

When he is not busy taking care of his patients, he enjoys traveling, photography, watching sports, playing sports like golf, tennis and badminton, spending time with the family, and enjoying fine food coupled with wine. He is a self-proclaimed foodie.

LANGUAGES:  English, Hindi, Punjabi, and Urdu. His staff speaks Spanish, as well.

Education

Medical Degree: Government Medical College, Guru Nanak Dev University in Punjab, India
Residency: Internal Medicine, Cleveland Clinic Health System, Cleveland, OH
Fellowship: Gastroenterology/Hepatology, State University of New York at Buffalo, Buffalo, NY

Associations

American College of Gastroenterology
American Society for Gastrointestinal Endoscopy
American Gastroenterological Association
Texas Society of Gastroenterology and Endoscopy
Texas Medical Association
Travis County Medical Society

Associated Providers

Erica Burg, MSN, NP-BC
Nichole Fleming, PA
Sheila Nguyen, PA-C

Testimonials

“Dr. Gagneja is my favorite doctor of all the doctors I have had – and I am 65 years old. I had a large polyp no other doctor wanted to treat. The other doctors said, ‘This is a job for Gagneja.’ He is respected by doctors and patients. He is easy to understand. He removed my large polyp with no complications at all.” – Karen (Healthgrades)

“I’ve seen Dr. Gagneja for several years, and he’s always been such an informative and calming presence. He takes the time to listen and that is huge.” – Amiee (Google review)

“I’d like to thank Dr Gagneja and his staff for a wonderful experience. The staff was extremely helpful throughout the process. Dr. Gagneja was very responsive to my questions late at night and assured me everything was fine. I would highly recommend him, because of their professionalism, friendly, sincere concern for my father’s surgery from start to finish. Thank you all so much!!!” – Michelle (Google review)

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Our Blog

Is Endoscopy Needed for Heartburn Treatment?

, In short, Endoscopy is not needed for all heartburn cases, but it becomes necessary when symptoms persist despite treatment or when complications are suspected. The procedure helps diagnose serious conditions like Barrett’s esophagus, ulcers, and esophagitis that can cause chronic heartburn. Most people with occasional heartburn can manage symptoms effectively with lifestyle changes and

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Congratulations to Austin Gastroenterology’s 2025 Super Doctors!

, Recognizing Excellence in Digestive Health Across Austin & Central Texas Austin Gastroenterology is proud to celebrate our physicians who have been recognized on the 2025 Texas Super Doctors List, an honor reserved for outstanding physicians who have earned the respect of their peers, demonstrated leadership in their specialty, and delivered exceptional patient care year

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Can Hepatitis B Lead to Hepatitis C?

, In short, No, hepatitis B cannot lead to or cause hepatitis C as they are separate viral infections caused by different viruses However, shared risk factors like needle sharing mean some people can become infected with both viruses simultaneously or sequentially Co-infection with both hepatitis B and hepatitis C can accelerate liver damage and

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Austin Gastroenterology offers dedicated care for various gastrointestinal and liver conditions through a range of in-office procedures, diagnostic and screening procedures, advanced endoscopic procedures in hospital, and other specialized GI care services. We have 18 offices throughout the greater Austin area, including GI care clinics, endoscopy centers, and infusion centers.