Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Buchanan Workman, M.D.

Orthopaedic Surgery Physician in Walnut Creek, CA · enumerated 2006 · practices at Bass Medical Group.

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

National Provider Identifier

1952376352

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Registry record

Entity type Individual (Type 1)

Name Dr. William Buchanan Workman

Credential M.D.

Sex Male

Practice address 390 N Wiget Ln Ste 100, Walnut Creek, CA, 94598

Phone (925) 944-0110

Fax (925) 944-0960

Enumeration date Feb 20, 2006

Last updated in NPPES Feb 10, 2025

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License A72343 (CA) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License A72343 (CA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
5770390001	Other	CA	MEDICARE DMEPOS

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.

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Frequently asked questions

How do I verify William Workman's NPI record?

Cross-check NPI 1952376352 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1952376352 active?

Yes, as of the latest NPPES snapshot, NPI 1952376352 is active (record last updated 2025-02-10).

Other providers at this practice address

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Bass Medical Group Orthopaedic Surgery Physician · Walnut Creek, CA NPI 1043616600

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-10.