GI Alliance Partners With Cardinal Health to Create Multi-Specialty Platform | Learn More

Due to inclement weather, all GSI Offices and Endoscopy Centers will be closed on Monday, 1/26/2026. 

We will be opening at 11am on Tuesday, 1/27/2026. Outpatient procedures and office appointments scheduled before 11am are being rescheduled. Please call our office at 804-285-8206 to schedule or reschedule your appointment as needed.

GI Alliance: Sherman Endoscopy Center

GI Alliance: Sherman Endoscopy Center

Friday
8:00AM – 4:00PM

Request An Appointment

Request An Appointment

If you are experiencing a medical emergency, please call 9-1-1. This form is intended for non-urgent appointment requests only. Our office will handle non-emergency requests within 48 hours.

GI Alliance: Sherman Endoscopy Center
1615 North Highway 75, Suite A, Sherman, TX 75090
Get Directions
Map of

Our Providers

John Fletcher, M.D.

Gastroenterologist
 in Sherman, TX
Meet Dr. Fletcher

Ryan Kahl, D.O.

Gastroenterologist
 in Sherman, TX
Meet Dr. Kahl

Kruti Patel, D.O.

Gastroenterologist
 in Sherman, TX
Meet Dr. Patel

Nathan Smallwood, M.D.

Colorectal Surgeon
 in Sherman, TX
Meet Dr. Smallwood

Desiree D. Frye, N.P.

Nurse Practitioner
 in Sherman, TX
Meet Desiree

Request An Appointment

If you are experiencing a medical emergency, please call 9-1-1. This form is intended for non-urgent appointment requests only. Our office will handle non-emergency requests within 48 hours.