Committed to the highest standards of care for all patients, Clifford L. Simmang, M.D., currently serves as the only surgeon in Texas, on the American Board of Colon & Rectal Surgery, overseeing certification for all colon and rectal surgeons.

Provider Type



Colon and Rectal Surgery

Board Certifications

Colon and Rectal Surgery


Texas Colon & Rectal Specialists–Medical City Dallas
7777 Forest Lane, Bldg. A, Suite A321
Dallas, Texas 75230
Phone: 972-661-3575
Fax: 866-644-6807

Texas Colon & Rectal Specialists–Grapevine
1600 W. College Street, Suite 440
Grapevine, Texas 76051
Phone: 817-865-6200
Fax: 866-644-6856

Spoken Languages


Prep Kit Instructions

Colonoscopy Prep Instructions


  • Residency in Colon and Rectal Surgery
    Jewish Hospital at Washington University
    St. Louis, MO
  • Residency in General Surgery
    Brooke Army Medical Center
    Fort Sam Houston, TX
  • Medical Doctorate
    The University of Texas Medical Branch
    Galveston, TX
  • Bachelor of Science
    Texas A&M University
    College Station, TX

Accolades & Memberships

  • American Board of Colon & Rectal Surgery
  • American College of Surgeons, Chairman of Advisory Council
  • American Society of Colon & Rectal Surgeons
  • Best Doctors in America® Elected by his peers for inclusion in Best Doctors in America from 1998—2012
  • Consumers’ Research Council of America Guide to America’s Top Surgeons
  • Dallas County Medical Society
  • Dallas Society of General Surgeons
  • D Magazine Best Doctors in Dallas, 2003—2020
  • Society of American Gastrointestinal Endoscopic Surgery
  • Society of Surgical Oncology
  • Society for Surgery of the Alimentary Tract
  • Laylock-Snyder Teaching Award, 2000
  • Midwest Society of Colon and Rectal Surgeons
  • North Texas Chapter – American College of Surgeons
  • Parkland Surgical Society
  • Phi Sigma
  • Phi Kappa Phi
  • Sigma Xi
  • Society of US Army Flight Surgeons
  • Southwest Surgical Congress
  • Texas Medical Association
  • Texas Society of Colon and Rectal Surgeons
  • Texas Super Doctors™ Texas Monthly 2004, 2006—2010, 2015
  • Texas Surgical Society
  • Western Surgical Association

Primary Hospital Affiliations and Surgical Facilities

  • Baylor Scott & White Medical Center - Grapevine
  • Baylor Scott & White Surgicare Grapevine
  • Medical City Surgery Center Park Central

Existing patients please access the patient portal login to request an appointment.