Edward F. Coles, M.D.


1305 Wonder World Dr Ste 200

San Marcos, TX 78666

Closed. Opens Thur at 8 AM
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Quick Facts

  • Colon Cancer Screenings
  • IBD, Crohn's Disease, Ulcerative Colitis
  • Acid Reflux/Heartburn and Advanced Endoscopy
  • Currently Accepting New Patients
  • Most Insurance Plans Accepted

TDDC - San Marcos Research

Gastroenterology in San Marcos, TX

TDDC - San Marcos Research

1305 Wonder World Dr

Ste 200

San Marcos, TX 78666

Closed. Opens Thur at 8 AM


Texas Digestive Disease Consultants - San Marcos, TX

Gastroenterology in San Marcos, TX

Texas Digestive Disease Consultants - San Marcos, TX

1305 Wonder World Dr

Ste 200

San Marcos, TX 78666

Closed. Opens Thur at 8 AM

About Edward F. Coles, M.D.

Why did you choose to specialize in Gastroenterology?

Gastroenterology allows me to develop long term relationships with many interesting patients from all walks of life. Unlike most surgical fields, I see people at varying intervals of their lives. I can utilize the intellectual side of Internal medicine in taking a history and doing a physical, formulate a differential diagnosis then do a procedure to diagnose and treat many conditions. It is a very technical field that is always changing and innovating.

Do you have a specialty of interest within GI?

I love all aspects of this field, and I particularly enjoy teaching the many skills needed to be a competent Gastroenterologist. Prevention of cancers, Cirrhosis, etc. is particularly appealing. It is always satisfying to take a critically ill patient in the ICU and do a minimally invasive procedure to turn them around in minutes. Just a few years ago they would have needed a huge operation or even passed away.

Where did you study?

Undergrad: University of San Diego, Medical School: Georgetown University School of Medicine, Internship and Residency: Letterman Army Medical Center, Fellowship: Brooke Army Medical Center.

What certifications do you hold?

Board Certified in Internal Medicine and Gastroenterology. Fellow in the American College of Gastroenterology and Fellow of the American College of Physicians.

What do you and your family enjoy doing in your spare time?

We enjoy traveling together, fishing, hiking and hunting. We spend a lot of time at our ranch outdoors. We volunteer at our church and are active in the soup kitchen.

Do you have any special honors or recognitions in your medical career that you would like to share?

I have been named Super Doctor as a top Texas Physician by Texas Monthly Magazine for many years. Likewise, I have been named a Top Doctor in Austin area for many years by Austin Monthly Magazine. I was awarded Jr AOA in medical school. My favorite awards were given to me in my training years as the top over graduate from all training programs in the medical center in San Francisco and Top resident teacher award given by the intern class of the medical center.

Do you fluently speak any other languages in addition to English?


Please list your professional affiliations.

Staff member at several hospitals in our area, member of the New Braunfels Chamber of Commerce and General and Executive Board of Directors for TDDC.


Dr. coles is personable, very informative, and most helpful. His staff is friendly and kind. I received the care I needed and scheduled for a needed procedure. Excellent!

J.E. Google

Dr. Coles is an excellent doctor he's been my doctor for two procedures and he explained everything and was very kind and caring, you can feel how he cares for his patients and I would recommend him to anyone.

L.D. Google

Dr. Cole and his staff were very professional . The procedure was quick & successful.

R.A. Google

Have had 4 examinations by Dr. Coles and have found, from walking into his office to have examinations performed to being discharged, has been an extraordinarily pleasant experience. Dr. Coles' staff is professional from start to finish. Their friendliness and step-by step procedure is explained as they work relieving any fear skeptical patients might have of colonoscopy (of which I'm not!). Completely painless procedure through and through (no pun intended!) with absolutely no pain or problems afterward. Dr. Coles provides photos to the patient, after waking up, of the procedure's findings, pointing out potential or existing polyps and any other findings (such as discovering a possible sleep apnea problem I was unaware of) which he passed on to my own physician for follow-up. Thoroughly a well-run medical business! Looking forward to my 75th birthday to meet Dr. Coles' while celebrating his 35th year in practice and his wonderfully-skilled staff for my next check-up in New Braunfels.

C.H. Google

I'd like to personally thank the front desk staff for the warm welcome and laughing at my husbands corny jokes, Dr Coles for being the absolute best and awarding me "Colon of the Week" (on a Monday), Cory for his kindness and that wonderful hot air tube, Lindsey for keeping me alive during the "anesthesia party", and to the lady with the pretty pink/purple streak in her hair (I'm sorry I can't remember your name #anesthesiaparty) my husband took me to McDonalds....NOT Olive Garden 👎🏼😡Everyone in this office is amazing and I'd highly recommend Dr Coles to anyone looking for an enjoyable and entertaining colonoscopy

K.C. Google


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