Dr. William Keith arrived in Fort Myers in 1991 when he joined The Clinic for Digestive Diseases. He is actively involved in numerous patient initiatives and has special interest in reflux and swallowing disorders, as well as primary and secondary prevention of colon cancer. He was the first doctor in Lee County to perform endoscopic treatment for reflux including the bard endocinch as well as the stretta procedure. 

Dr. Keith was awarded early entrance to Medical school and is a member of the Alpha Omega Alpha honor medical society. He has lectured nationally on topics to include endoscopic therapies of GERD, H. Pylori induced ulcer disease, and electronic medical records. He is a former faculty member at the University of South Florida.

He was voted “Best Doctors” by his peers, as well as one of the Castle Connolly “Top Doctors,” as seen in Gulfshore Life.

Accepting new patients:

I am accepting new patients.


Primary Specialty:


Secondary Specialty:

Internal Medicine

Undergraduate Education:

University of Colorado/University of Florida: 1981

Medical Education:

University of Florida School of Medicine: 1984 


University of Alabama in Birmingham: 1987 

Internal Medicine


University of South Florida: 1989 

Gastroenterology and Endoscopy

Academic Appointments:

Assistant Professor: 1989-1990 

University of South Florida

Board Certifications:

ABIM/Gastroenterology: 1989 

American Board of Internal Medicine: 1987 

In Practice Since:


Honors and Awards:

Alpha Omega Alpha Honor Society 

Early entrance to medical school 

lisa pellegrino
3 months ago
This was a great office. Staff was very helpful and I was able to get a same day appointment, when my general practitio...
Thomas Sheehy
4 months ago
Was greeted upon entry, given forms to fill out and called into treatment room shortly after doing so. Doctor came in, a...
Fort Myers
4 months ago
Great staff. Always friendly and appointments are kept on time. It's a pleasure to come here vs a hospital as you don't ...
Bonnie Schaufel
3 months ago
Saw Dr. Harris for my husband Bruce. He was extremely kind and very knowledgeable. Sending Bruce for tests, he will be d...
Tim Wallace
5 months ago
Dr. Brian Rajca listens carefully to you as a patient, and conveys his prognosis in clear layman's terms. His treatment...