Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. William James Wolfenden Jr., M.D.

Plastic Surgery Within the Head and Neck (Plastic Surgery) Physician in San Francisco, CA · enumerated 2006.

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

National Provider Identifier

1154485183

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Registry record

Entity type Individual (Type 1)

Name Dr. William James Wolfenden Jr.

Credential M.D.

Sex Male

Practice address San Francisco, CA, 94109

Phone (415) 441-9565

Fax (415) 441-9587

Enumeration date Dec 21, 2006

Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

2082S0099X Plastic Surgery Within the Head and Neck (Plastic Surgery) Physician Allopathic & Osteopathic Physicians · License A21279 (CA) Primary

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

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

Where does William Wolfenden practice?

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

What is the NPI number for William Wolfenden?

The National Provider Identifier (NPI) for William Wolfenden is 1154485183, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.