William Forrest Johnston, MD

Dr. Forrest Johnston grew up in Galveston, Texas before attending college at Wake Forest University in North Carolina. He graduated summa cum laude with a double major in religion and chemistry. He returned to Texas for medical school at Baylor College of Medicine where he graduated with honors. He trained at the University of Virginia in General Surgery and completed a fellowship in Colon and Rectal Surgery at the Lahey Clinic in Burlington, Massachusetts.

Dr. Johnston is interested in and treats all aspects of colon and rectal diseases, including colon and rectal cancer, diverticulitis, inflammatory bowel disease, and anorectal disorders. He is board certified by the American Board of Surgery and the American Board of Colon and Rectal Surgery. Dr Johnston joined the Ochsner staff in 2017.

Medical School

Baylor College of Medicine


General Surgery-University of Virginia, Charlottesville


General Surgery-University of Virginia, Charlottesville


Lahey Hospital & Medical Center

Explore Clinical Trials

Over 1,000 clinical trials
being conducted at Ochsner.

Donate to Ochsner

We change and save lives every day.
Your support makes it possible.

Download the
MyOchsner Mobile App

With the Mobile App you can review test results, medications, immunization history, pay your bill, stay in touch with your provider and more.

Access Care 24/7

Ochsner Anywhere Care Virtual Visits

Get Care Now

Healthy living tips,
delivered to your inbox