Fred WilliamsMD
Gastroenterology·Chesterfield, MO
Fred Williams, MD is a Gastroenterology provider in Chesterfield, MO affiliated with 1 ambulatory surgery center in MO, as of July 2026.
- NPI1386644326
- Registered2005
- Centers1
- StateMO
- Class of1986
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Fred Williams at a glance
- Provider
- Fred Williams
- Credential
- MD
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Chesterfield, MO
- Medical school
- University of Missouri, Kansas City, School of Medicine
- Graduated
- 1986
- NPI registered
- 2005
- NPI
- 1386644326
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Fred Williams practice?
Fred Williams, MD is based in Chesterfield, MO and is affiliated with 1 ambulatory surgery center: Mason Ridge Ambulatory Surgery Center Dba Gateway Endoscopy Center in Saint Louis, MO. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Fred Williams's NPI number?
Fred Williams's National Provider Identifier (NPI) is 1386644326, registered in 2005. Specialty on record: Gastroenterology; credential MD.
Where did Fred Williams go to medical school?
Fred Williams, MD attended University of Missouri, Kansas City, School of Medicine, graduating in 1986.
How many Gastroenterology providers in Missouri work at ambulatory surgery centers?
82 Gastroenterology surgeons and proceduralists in Missouri are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Fred Williams among them. The Missouri Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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