Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Fred Harrison Williams, MD

Individual provider Gastroenterology Physician · NPI 1386644326

Fred Harrison Williams, MD is a Gastroenterology in Chesterfield, Missouri. Graduated from University of Missouri, Kansas City, School of Medicine in 1986, 40 years ago. Practices with Gateway Gastroenterology Inc, a 25-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
40
Trained at
University of Missouri, Kansas City, School of Medicine
Licensed in
MO
In the registry since
2005
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

17298 N Outer 40 Rd Ste 200
Chesterfield, MO 63005-1456
Phone: (314) 529-4900
Fax: (314) 434-2679
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 118411 (MO)

Record details

NPI number1386644326
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 29, 2005
Last updated in NPPESJuly 1, 2026
Certification dateJuly 1, 2026
Mailing address17298 N Outer 40 Rd Ste 200, Chesterfield, MO 63005-1456

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MISSOURI, KANSAS CITY, SCHOOL OF MEDICINE
Graduated 1986 (40 years in practice)
Group practice Gateway Gastroenterology Inc — 25 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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