Clifford L. Simmang, M.D., M.S.
Committed to the highest standards of care for all patients, Clifford L. Simmang, M.D., M.S., 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–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.