Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Berkley Leo Williams, PA-C

Medical Physician Assistant in Manassas, VA · enumerated 2011.

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

National Provider Identifier

1124319801

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Registry record

Entity type Individual (Type 1)

Name Mr. Berkley Leo Williams

Credential PA-C

Sex Male

Practice address 8708 Sudley Rd, Manassas, VA, 20110

Phone (703) 530-1226

Fax (703) 530-1228

Enumeration date Apr 28, 2011

Last updated in NPPES Apr 28, 2011

Taxonomy & licenses

363AM0700X Medical Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 0110840786 (VA) 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

Where does Berkley Williams practice?

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

What is the NPI number for Berkley Williams?

The National Provider Identifier (NPI) for Berkley Williams is 1124319801, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-04-28.