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Harry Sarles, M.D.
Vice President / Principal Investigator
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To schedule an appointment, please call 972-771-2222 or click the “Message Us” button located at the bottom right corner of your screen and a member of our team will contact you within 48 hours.
Dr. Sarles is a board certified gastroenterologist with extensive advanced experience in the field of gastroenterology and hepatology. He is currently the medical director and principal investigator for digestive health research Institute. He is directing trials in multiple fields of gastroenterology including inflammatory bowel disease, (Crohn’s disease, ulcerative colitis), gastroparesis, irritable bowel syndrome, eosinophilic esophagitis, nonalcoholic steatohepatitis. Dr. Sarles personal interests are in inflammatory bowel disease (IBD), colon cancer prevention and early detection, and esophageal problems. He has extensive training and experience in all endoscopic procedures. He also offers a nonsurgical hemorrhoidal banding procedure in office to eliminate symptomatic hemorrhoids.
In addition to his clinical duties, Dr. Sarles has served as the past president of the American College of Gastroenterology and the Texas Society for Gastroenterology and Endoscopy.
Education
- Fellowship: Gastroenterology, V.A. Hospital, Phoenix, AZ
- Residency: Internal Medicine, University of Texas Medical Branch, Galveston, TX
- Medical School:
- University of Texas Medical Branch, Galveston, TX
- Undergrad: University of Texas, Austin, TX
Professional Certifications
- Board Certifications: Internal Medicine and Gastroenterology
- Professional Affiliations
- American Gastroenterological Association
Facility Affiliations
- Texas Health Presbyterian, Rockwall
- Preston Crossing Endoscopy Center
Reviews
I've been seeing Dr Sarles for about a decade. I highly endorse Harry!
Appointment went very well, Dr. Sarles is very knowledgeable!
Dr Sarles and the team were great. Considering the procedure I had it was not bad but the experience I had with everyone made it tolerable.
Dr Sarles is an excellent doctor. He’s very efficient, caring, and knowledgeable about his chosen profession. My experience with him has been a good one this far.
ONE WORD!!!! GREAT!
thank you for taking care of me!
thank you for taking care of me!
Everything went well. Very professional. The Dr. came by to consult after the procedure but I was still out. Never heard from him so I guess I'm good to go for another 10 years? 🤷♂️
Everyone was very kind, patient, and professional…
Dr. Sarles and staff have always made me feel welcome and cared for… My experience once again at the surgical center was very comforting, caring and professional.. P.A. Lillian Sarles is as knowledgeable, warm and caring as Dr. Sarles.. I recommend him highly..
Great atmosphere and each personnel gave me thorough information and guided me through the entire process
Everything went exceptionally well.
Doctor Sarles was a great doctor! Professional, and got the test results back quickly, which helped to put my mind at ease.
I was very happy because everyone were so nice and helpful at all time. Dr Sarles is excellent doctor after the colonoscopy I didn’t have no problem. I felt great just want to go eat. Thank you for an excellent experience.
Wonderful experience. Fantastic staff.
Very caring doctor! He takes time with his patients and answers all questions!
Dr. Sarles is the BEST! He not only listens to your concerns, but he truly cares. He explains things that you understands and I appreciate that.
You can tell he really cares about his patients. He took the time to go over everything and answered all my questions. Also his whole staff is super friendly.
He is a very good Doctor. With a big heart! He is a little rough tho :)) but overall he makes sure you will get better. Highly recommended and thank you Doc!
The Doctor listened and shared answers to our questions.
As soon as Dr Sarles walked into the examination room and introduced himself, I felt my anxieties starting to melt. Dr Sarles explained what my body was lacking, and the steps to find out why, so the correct path can be taken to treat me. His explanations we simple, clear, and concise. I needed an Upper GI Endoscopy or EGD (esophagogastroduodenoscopy). HAHAHAHA, don’t fret I couldn’t pronounce it either. He took time to listen and answered all questions I had. His staff is super sweet, knowledgeable, professional and friendly. Especially Jennifer, she followed up and took a very good care of me. Excellent service! I would highly recommend this office. I am extremely thankful that I was referred to Dr Sarles.
The office was very nice. There was no waiting and I got in to see the Dr at my appointment time. Dr Sarles is a great doctor.