Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William D. Fuller, M.D.

Surgery Physician in La Jolla, CA · enumerated 2005.

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

National Provider Identifier

1598747065

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Registry record

Entity type Individual (Type 1)

Name Dr. William D. Fuller

Credential M.D.

Sex Male

Practice address 10666 N Torrey Pines Rd, La Jolla, CA, 92037

Phone (858) 554-8984

Fax (916) 734-3951

Enumeration date Nov 18, 2005

Last updated in NPPES Oct 16, 2018

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License A87087 (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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is William Fuller?

William Fuller is registered in NPPES with the primary taxonomy of Surgery Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-10-16.