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Dr. Gregg Wendorf, a South Texas native, was born and raised in the Rio Grande Valley. He received his MD from UT Health San Antonio while also earning his Master of Public Health. After medical school, he completed his residency in Internal Medicine and fellowship in Gastroenterology at the University of Louisville in Louisville, KY. Dr. Wendorf was honored to serve as Chief Fellow during his final year of fellowship. Dr. Wendorf is excited to return to San Antonio and join GCSA and looks forward to forming lasting relationships with his patients and helping treat a wide variety of illnesses. He is skilled in all areas of gastroenterology with special interest in functional bowel disorders such as IBS, motility disorders such as gastroparesis, and liver diseases including Hepatitis C, fatty liver, and cirrhosis. Dr. Wendorf is also skilled in the placement and management of feeding tubes in patients with strokes or other neurologic disorders.Dr. Wendorf is a married father of two. When not working, he enjoys traveling with his family, reading, and sampling the local breweries and restaurants.
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Explains conditions and treatments
Takes time to answer my questions
Provides follow-up as needed

Based on patient feedback. Read the reviews


Dr. Wendorf's Rating
9 Ratings with 9 Reviews
Patient Perspective
5.0 Explains conditions and treatments
5.0 Takes time to answer my questions
5.0 Provides follow-up as needed
Office Rating
Showing ratings for:
550 S Jackson St, Louisville, KY, 40202
n/a Average office wait time
n/a Office cleanliness
n/a Courteous staff
n/a Scheduling flexibility
University Of Louisville
550 S Jackson St
Louisville, KY, 40202
Showing 1-9 of 9 reviews
"I have found Dr Wendorf to be an excellent doctor. I have a long history of gastrointestinal problems that have been difficult to treat that have required multiple hospitalizations. He is an exceptional listener and he is really good at explaining what is happening and how he plans on managing your case. He’s always been on time and I’ve never felt rushed to get in and out. He takes time to explain and to listen to your concerns. He offers treatment options if there are any. The office staff are very friendly and helpful. Phone calls are returned in a very timely manner and prescriptions are sent to the pharmacy very quickly and efficiently. I have been very happy with the entire experience of being his patient. I would not hesitate to recommend him to family and friends. Definitely deserves a 5+ star rating."
  • December 16, 2022
"Dr Wendorf was friendly and made you feel at ease. He was thorough and answered all my questions before and after the procedure. I would highly recommend him!"
  • November 4, 2022
"I would like to thank Dr. Wendorf and his team. Absolute professionals and highly recommend them for your next Gastroenterologist appointment. "
  • November 3, 2022
"Quick and painless. Was rolled in, given a shot and 10 seconds later they are saying I’m done. ( it really wasn’t 10 seconds but man did it feel like that). Thank you for great work. "
  • November 2, 2022
"Dr Wendorf and his staff are very professional and courteous with their patients. Each time I have seen him, Dr Wendorf has been very thorough and patient oriented. It has been a pleasure dealing with the GCSA practice. I would highly recommend Dr Wendorf for anyone looking for an honest and professional GI doctor."
  • November 2, 2022
"Great experience as was referred outside of the VA for my needs. Upon initial meeting Dr. Wendorf was welcoming and made me feel comfortable and even provide more insight and guidance options for me to consider for my procedure. Upon returning for my procedure him and his team were excellent and I highly recommend for your gastroenterology needs."
  • November 2, 2022
"Dr. Wendorf addressed each of my concerns thoroughly. He encouraged a comprehensive diagnostic and treatment plan, which really helped put my mind at ease about the various symptoms I was experiencing and provided both immediate help and long-term suggestions for my ailments. He explained his reasoning behind every suggestion without making me feel pressured or uneasy at any point. And whereas some providers would be inclined to be dismissive of my symptoms as nothing too serious due to my relatively young age, Dr. Wendorf focused on my symptoms and took my words at face value so I really felt assured I was in good hands while under his care. "
  • November 1, 2022
"My visit with Dr Wendorf was pleasant, informative and detailed. My colonoscopy experience at the Wolfe-Hamilton location was thorough, as non stressful as such a thing can be. I appreciate Dr Wendorf and the staff."
  • November 1, 2022
"He listens ,and very caring,and knowledgeable. Great Doctor "
  • November 1, 2022


University Of Louisville
550 S Jackson St
Louisville, KY, 40202
Dhr Health Gastroenterology
5520 Leonardo Da Vinci Ste 100
Edinburg, TX, 78539
Mon2:00 pm - 6:00 pm
Wed8:30 am - 12:30 pm
Fri8:30 am - 4:30 pm
Valley Internal Medicine Geriatric And Diabetic Center Pa
1200 E Ridge Rd Ste 7
McAllen, TX, 78503
  • Accepting New Patients
  • Medicare Accepted
  • Medicaid Accepted
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 12:00 pm
  • Accepting New Patients
  • Medicare Accepted
  • Medicaid Accepted
5223 Hamilton Wolfe
San Antonio, TX, 78229
Dhr Health Edinburg
5501 S McColl Rd
Edinburg, TX, 78539



Medical School
Univ Of Tx Hlth Sci Ctr At San Antonio Joe R & Teresa Lozano Long Schof Med
Graduated 2013


Please verify insurance information directly with your doctor's office as it may change frequently.
  • Most Insurance Plans Accepted
  • Humana ChoiceCare Network PPO
  • CIGNA Open Access Plus
  • Aetna Choice POS II
  • Aetna HMO
  • BCBS Blue Card PPO
  • Multiplan PPO
  • First Health PPO
  • UHC Choice Plus POS
  • UHC Options PPO
  • BCBS TX BlueChoice
  • Humana National POS
  • Humana HMO Premier
  • Aetna Managed Choice POS Open Access
  • UHC Navigate HMO
  • Humana Choice POS
  • Humana Preferred PPO
  • BCBS TX Blue Advantage HMO
  • Humana San Antonio HMOx
  • Ambetter Superior Health Plan
  • Aexcel PPO
  • Blue Essentials HMO
  • Molina place TX
  • TX Ambetter
  • UHC Nexus Open Access
  • Aetna Elect Choice EPO Open Access
  • Aetna Innovation Health Aetna Premier Care Network Plus
  • Aetna Open Choice PPO
  • Ambetter TX
  • AWH BaptistHealth HealthTexas Managed Choice
  • BCBS TX Blue Essentials HMO
  • Friday Gold (On Exchange) - TX
  • Humana / ChoiceCare Network PPO
  • Humana/ChoiceCare+ Network PPO
  • Medica Choice With UHC
  • Molina Marketplace TX
  • Oscar Insurance TX Choice Individual
  • Oscar Insurance TX Select Individual
  • Aetna CVS San Antonio Texas HMO
  • UHC TX Individual Exchange Benefit Plan
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