Joseph E. Johnson IV, M.D.



520 E Euclid Ave

San Antonio, TX 78212

Open today 8 AM - 5 PM

Quick Facts

  • Virtual Telemedicine Visits Available, Call For Details
  • Board Certified Gastroenterologist
  • Currently Accepting New Patients
  • Most Insurance Plans Accepted
  • Performs Colonoscopies

SAGA - San Antonio, TX - Downtown

Gastroenterology in San Antonio, TX

SAGA - San Antonio, TX - Downtown

520 E Euclid Ave

San Antonio, TX 78212

Open today 8 AM - 5 PM


SAGA - San Antonio, TX - Medical Center

Gastroenterology in San Antonio, TX

SAGA - San Antonio, TX - Medical Center

2833 Babcock Rd

Ste 100

San Antonio, TX 78229

Open today 8 AM - 5 PM


SAGA - San Antonio, TX - Stone Oak - Sonterra

Gastroenterology in San Antonio, TX

SAGA - San Antonio, TX - Stone Oak - Sonterra

150 E Sonterra Blvd

Suite 100

San Antonio, TX 78258

Open today 8 AM - 5 PM

Request an Appointment

If you are experiencing a medical emergency, please call 9-1-1. This form is intended for non-urgent appointment requests only. Non-emergency requests will be responded to within 24-48 hours.

About Joseph E. Johnson IV, M.D.


Dr. Joseph Johnson IV believes he was destined to be a physician. He never thought of doing anything else. He comes from generations of doctors, dating all the way back to the 1800s. However, choosing his preferred field of study was a little more interesting. Dr. Johnson says, “[Choosing gastro] was an accident. I ended up training under two men who were Nobel Prize winners in GI, their enthusiasm for the field was contagious.

He completed his Doctorate at the University of Texas, followed by acceptance of a Fellowship at the University of North Carolina. During his career, Dr. Johnson served as Staff Physician at Murphy VA Hospital.

In the past, Dr. Johnson was also on a talk show in San Antonio. The show included a 10-minute segment designed to help viewers better understand and care for their health. Although the program is no longer on the air, he still spreads the word about colon cancer.

Dr. Johnson is a colon cancer survivor himself. He says that his own experience battling the disease only fueled his passion for the cause. He says to his patients in daily practice, “When you’re sick or struggling with your health, the last thing that you want to do is sit in a waiting room or be shuffled from room to room and talk to doctors who act too busy. My experience only enhanced the human element that must exist in this practice. I am dedicated to being responsive, on time, and focused on my patient’s care. I’m focused during every moment I spend with them.”


Doctor of Medicine, University of Texas Health Science Center at Southwestern Medical School, Dallas, Texas
Residency in Internal Medicine, University of Texas Health Science Center, San Antonio, Texas
Fellowship, Gastroenterology University of North Carolina, Chapel Hill


Medical Director San Antonio Gastroenterology Endoscopy Center North
Fellow, American College of Physicians



There is never a long wait to see the doctor. Dr. Johnson is compassionate, kind and caring we’ve been going to him for years.

B.B. Google

I love the service from my Dr Johnson. He is the best and so is Harley

B.M. Google

I LIKE TO THANK ALL OF YOUR STAFF FROM YOUR From the representative in the front area to the nurses in the back will assess me and the anesthesiand it and everybody that did a great job. I'd like to thank him very much and I feel way better. And my procedure went great and I am very blessed that you Mr. Doctor Johnson have so much wonderful staff. Thank you and have a blessed day.

J.H. Google

Everyone is really nice.

L.R. Google

Efficient, professional and thorough. I would highly recommend Dr Johnson and his staff.

T.S. Google


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