Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey Martin Williams, PA-C

Physician Assistant in La Mesa, CA · enumerated 2006 · practices at Scripps Clinic Medical Group.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1598854432

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Registry record

Entity type Individual (Type 1)

Name Jeffrey Martin Williams

Credential PA-C

Sex Male

Practice address 10862 Calle Verde, La Mesa, CA, 91941

Phone (619) 670-5400

Enumeration date Oct 11, 2006

Last updated in NPPES Sep 13, 2017

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA54254 (CA) Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Jeffrey Williams?

The National Provider Identifier (NPI) for Jeffrey Williams is 1598854432, a Type 1 (individual) record in the CMS NPPES registry.

Where does Jeffrey Williams practice?

The practice location on file with NPPES is in La Mesa, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Scripps Clinic Medical Group Multi-Specialty Clinic/Center · La Mesa, CA NPI 1710962527 Victoria Shuffelton Family Medicine Physician · La Mesa, CA NPI 1245204239 Dawn Van Ness Pediatrics Physician · La Mesa, CA NPI 1497729495 Neelima Doshi Pediatrics Physician · La Mesa, CA NPI 1417921578 Robert Sablove Family Medicine Physician · La Mesa, CA NPI 1477527463 Shirley Yee Family Medicine Physician · La Mesa, CA NPI 1619941408 Jeanne Gromer Internal Medicine Physician · La Mesa, CA NPI 1659328169 Michael Magpile Internal Medicine Physician · La Mesa, CA NPI 1316988843

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-13.