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William P. Hummel, MD

Reproductive Endocrinology Physician in San Diego, CA · enumerated 2008.

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

National Provider Identifier

1962670893

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Registry record

Entity type Individual (Type 1)
Name William P. Hummel
Credential MD
Sex Male
Practice address 11515 El Camino Real, Suite 100, San Diego, CA, 92130
Phone (858) 794-6363
Fax (858) 794-6360
Enumeration date Feb 13, 2008
Last updated in NPPES Feb 13, 2008

Taxonomy & licenses

207VE0102X Reproductive Endocrinology Physician Allopathic & Osteopathic Physicians · License G52601 (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 Hummel?
William Hummel is registered in NPPES with the primary taxonomy of Reproductive Endocrinology 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 2008-02-13.