Randall S. Williams, MD

NPI 1245261114ActiveIndividual· General Practice· Chico, CA

General Practice (MD) in Chico, California, trained at Loma Linda University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $2,259,380 for 19,906 claims, against $1,355,194 paid for services in 2024. Abbvie Inc. was the largest of 36 companies reporting payments in 2025, $4,528 in all, mostly food and beverage.

Overview

NPI	1245261114
Status	Active
Entity type	Individual
Credential	MD
Sole proprietor	No
NPI issued	Jul 6, 2006
Last updated in NPPES	Jul 9, 2007

Specialties and licenses

Taxonomy	Code	License	State
General Practice Primary	208D00000X	G068885	CA

About license numbers in NPPES

Exclusion screening

List	Result	Details
HHS-OIG LEIE · Nov 10, 2026	No match	Checked by NPI and by name + state
North Carolina Medicaid · Nov 11, 2026	No match	—
New York OMIG · Nov 11, 2026	No match	—
Ohio Medicaid · Nov 11, 2026	No match	—
Pennsylvania Medicheck · Nov 11, 2026	No match	—
Washington HCA · Nov 11, 2026	No match	—

Official OIG search · How matching works ·Bulk check a roster

Medicare

Enrollment (PECOS)	Enrolled Practitioner - General Practice (CA)
Accepts assignment	Yes (participating)

Medicare services in 2024

Medicare patients	1,534
Services billed	71,829 across 197 procedure codes
Paid by Medicare	$1,355,194

Part D prescriptions in 2024

Prescriptions (claims)	19,906 · 43,727 30-day fills
Patients	1,449
Total drug cost	$2,259,380
Generic share	84% of claims

Medicare sources and data years

Education and affiliations

Medical school	Loma Linda University School of Medicine
Graduation year	1986
Medicare specialty	General Practice
Secondary specialties	Family Practice
Telehealth	Offers telehealth