LOCATIONS NEAR YOU

Expert GI care throughout the San Antonio community, find a gastroenterologist near you.

Find Location

TOP QUALITY CARE

Learn why more patients in San Antonio trust our gastroenterology associates and endoscopy centers with their digestive health.

Learn more

SCHEDULE APPOINTMENT

Request an appointment today with one of San Antonio’s leading gastroenterologists.

Request Appointment

Leading Experts in Digestive Health

LEADING EXPERTS IN DIGESTIVE HEALTH

San Antonio Gastroenterology Associates and Endoscopy Centers are top-rated for quality, safety, and patient satisfaction, outranking national benchmarks. Each endoscopy center is a Healthcare Bluebook featured facility with a green light rating for affordable, high-quality care.

Downtown San Antonio

SAGA GASTROENTEROLOGISTS

Among San Antonio’s Best Gastroenterologists

Dr. Ernesto Guerra Jr. Dr. Ernesto Guerra Jr.
Dr. Richard L. Otero Dr. Richard L. Otero
Dr. Joseph E. Johnson IV Dr. Joseph E. Johnson IV
Dr. Belinda Ramirez Dr. Belinda Ramirez
Dr. Eddie Flores Dr. Eddie Flores
Dr. Antonio Serna Dr. Antonio Serna
Dr. David Garcia (Joins March 1)
Dr. Mohammad Taheri - San Antonio Gastroenterologist Dr. Mohammad Taheri
Dr. John J. Alvarez Dr. John J. Alvarez

When to See a Gastroenterologist

Scheduling an apppointment with one of our gastroenterologists could help with an array of ailments, including GERD, heartburn/acid reflux, Barrett’s esophagus and preventing colon cancer.  Watch this video to see when you should schedule an appointment with a gastroenterologists.


I would like to commend the staff at SAGEC North for their exemplary demeanor with their patients. I am a returning patient for the colonoscopy procedure with Dr. Joseph Johnson, this being my 4th procedure, performed early this morning (11-30-16). The entire staff is warm and friendly toward each patient, placing the patient at ease and made to feel welcome. Their personal interaction with the patient is very much appreciated. Dr. Joe Johnson is, in a word, wonderful, and an expert in his field. Thank you very much.

Carolyn

This place was awesome, and the people are amazing…..

T.R.J.

The staff are awesome kind, friendly, and they work with you with your finances, the nurses and doctors are awesome they explain everything what they are going to do to you and how long it will take, the doctor comes and talks to you and family member what he did and he found. Love this place I would recommend it to anyone. Thank you Dr. Richard Otero and all your staff.

G.R.

Just a note to commend the entire staff who tended my needs last Friday morning! From my arrival time at 6:15 until my discharge at 8:35, I truly had a wonderful experience. Everyone was friendly, professional, caring, considerate, and very kind! The entire facility was run like clock-work yet never did I feel like just a number!! Thank you ever so much to each and all.

June S.

Wednesday I had a colonoscopy at the Sonterra Blvd facility. The staff and facility were exceptional. Happily tell my family and friends about how well I was treated both medically and personally. It is nice to have such a fine facility and medical staff in our neighborhood.

Grover L.