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Ernesto Guerra Jr., M.D.
Gastroenterologist
About Ernesto Guerra Jr., M.D.
Ernest Guerra, Jr., M.D. completed his Medical Doctorate at the University of California in San Diego and both internship and residency at the University of Texas Health Science Center in San Antonio. During his residency, Dr. Guerra served as Chief Resident of Internal Medicine and discovered his true calling, the subspecialty of gastroenterology.
While completing his Fellowship in Gastroenterology, Dr. Guerra then became fascinated with the innovative and technical nature of the profession. He says, “Looking back, it is amazing what has changed in the field [of gastroenterology] over just the last 20 years.” He then says, “I never thought in my lifetime we would see some of the advancements or cures that have been developed.”
Dr. Guerra is not just a witness to the advancements in GI but has also been an integral figure in industry changes in San Antonio. He founded the SAGA group, pioneering the concept of a freestanding endoscopy center, opening the first of its kind in downtown San Antonio. “It is one of the most pivotal experiences of my life. It was challenging, and anything we have achieved has been hard-won, but we did it to offer better service and a higher quality of care to our patients. And that is still our mission today.”
This mission has led the prestigious group to grow to eight clinic offices and three endoscopy centers in the San Antonio area, boasting some of the highest patient satisfaction ratings in the state, as well as exceeding industry quality standards across the nation.
If you ask Dr. Guerra what he loves about practicing medicine today, he will say, “Patient education. We do a lot for the patients that make it through our doors, but we are always seeking to do even more to reach more people who could benefit from these life-saving procedures.”
Education
Doctor of Medicine, University of California, San Diego, California
Internship, Residency, Internal Medicine, University of Texas Health Science Center, San Antonio, Texas
Fellowship, Gastroenterology University of Texas Health Science Center, San Antonio, Texas
Memberships/Affiliations
Founding Physician, University of California, San Diego, California
Medical Director, San Antonio Gastroenterology and Endoscopy Center, San Antonio, Texas
Chair, Medical Executive Committee of San Antonio Gastroenterology Endoscopy Centers
Member, American College of Physicians
Member, American Society of Gastrointestinal Endoscopy
Member, Bexar County Medical Society
Reviews
Dr. Guerra is the best! I traveled 2 hrs and would do it again. Would definitely recommend him.
Praise God! Endoscopy & Colonoscopy went well. Dr, Guerra @ SAGA & his team are amazing. Dr. Guerra has been my doctor since the 90’s, only as needed. His bedside manner is the same! Gracious, kind, respectful, passionate about his work, compassionate for his patients & positive in giving the best care! So thankful for his practice! May God continue blessing him & his staff!
Dr Guerra and all the nurses were polite and my procedure went well! Thank you for all you do ❤️
Dr Ernesto Guerra, had done two different procedures on me and one on my husband. We love Dr Guerra, he is very nice, friendly and very professional. Lorraine Martinez
I always feel worry free when I have to see dr Guerra I have so much confidences that everything is going to come out great. He is so professional and friendly and always makes things easy to understand. Thank you dr Guerra and all your lovely staff. Specially LVN John, RN Janie last but not lease my Anastasia nurse sorry you put me to sleep before I could memorize your name. lol. With no hesitation would and will refer Dr. Guerra in a heartbeat.
For close to twenty years Dr. Guerra has been providing gastroenterology services for me. There has been colon cancer in my family history so I have been recommended to keep a more frequent schedule for colonoscopy examination. That being said, I have been seen at Dr. Guerra's several times over the years. This last visit, like all previous visits, was professional and compassionate from check in to check out, from front desk assistant to the doctor himself. Dr. Guerra is committed to the best that medical technology has to offer. This commitment blends well with his knowledge and experience in his specialty. For these reasons, I feel Dr. Guerra is one of the best if not the best choice in the field of gastroenterology.
First impression, the waiting room was packed. But I was in and out. The Dr was knowledgeable and great.
My experience at the GI Clinic was smooth from start to finish. What makes this easy is how the process had no hick-ups.
His very good doctor. He treated you well and explained to you to understand well.
People were kind at the desk and preparation for the encounter eith Doctor.
Doctor Guerra super kind. Helping me to understand evetything.
Thank you
Doctor Guerra super kind. Helping me to understand evetything.
Thank you
Great experience super excellent staff and nurses.
I’ve had two procedures done with Dr. Guerra and my experience has been beyond excellent. Dr. Guerra is also my mother’s doctor. He and PA Moore are simply amazing. In general, all of the staff is very nice. I highly recommend them.
All the staff I dealt with were kind, compassionate, and professional
Dr. Guerra was so nice and made you fell well taking care of.
Caring staff and doctors. Go the extra mile to diagnose and treat. Highly recommend.
Excellent Service. Dr. Ernesto Guerra is very knowledgeable and patient with my moms health care
Doctor Guerra and I discussed my condition thoroughly. I am completely knowledgeable about the next steps to continue treatment.
The staff was thorough and efficient and ensured that I was completely comfortable with my first procedure.
Very professional personnel and very detailed service as well as a clean facility. Highly recommended.
Excellent service, excellent doctor. Dr. Guerra was extremely welcoming and answer each and one of my questions. I strongly recommend Dr.Guerra and his office.