Colorectal Surgery

J. Mark Downs, MD
J. Mark Downs, MD

Practice Name

“Prevention is often easier than cure. I encourage all patients to ask questions and be educated about the problems they face. This allows them to make better decisions regarding their health care.”

Dr. Downs is the program director for the residency program in colon & rectal surgery at Parkland and Presbyterian Hospitals in Dallas. Dr. Downs has conducted his private practice as a part of Texas Colon & Rectal Specialists since 1993. Dealing with patient wellness and overcoming potential colorectal problems in his practice, Dr. Downs believes preparation and education is key and has been a proponent of preparation in many areas of his surgical career. While serving in the U.S. Air Force, following Operation Desert Storm, Dr. Downs published an article on “Preparation for Mass Combat Casualties” for Emergency Care Quarterly.

His practice spans multiple colorectal diseases and treatments including colonoscopy performed for colorectal cancer screening, removal of polyps, and evaluation of elimination disorders. Dr. Downs offers specialized services such as anal cancer screening for high-risk patients, especially those with HIV disease. He also employs a variety of treatment options for hemorrhoids including medical therapy, rubber band ligation, infrared coagulation and surgical incision.

Dr. Downs claims a variety of interests and hobbies ranging from bluegrass music to water polo. He is an enthusiastic bicyclist, loves to swim, and still finds time to enjoy another favored pastime, reading. He and his wife, Carol Lee, reside in Dallas and have two children.

Dr. Downs is board certified by the American Board of Colon & Rectal Surgery and the American Board of Surgery. He is a fellow of the American College of Surgeons and the American Society of Colon & Rectal Surgeons.


Fellowship in Colorectal Surgery

Parkland and Presbyterian Hospital – Dallas, Texas

Residency in General Surgery

Wilford Hall USAF Medical Center – San Antonio, Texas

Degree: M.D.

University of Missouri – Columbia, Missouri

Degree: A.B.

Washington University – St. Louis, Missouri

Postgraduate Teaching

Presbyterian Hospital of Dallas

Fellowship Training Program

University of Missouri Hospital and Clinics


American College of Surgeons; Fellow

American Medical Association

American Society of Colon and Rectal Surgeons; Fellow

Dallas County Medical Society

Texas Medical Association