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

William H Annesley Jr., MD

Urology Physician in Wauwatosa, WI · enumerated 2006.

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

National Provider Identifier

1407899552

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Registry record

Entity type Individual (Type 1)

Name William H Annesley Jr.

Credential MD

Sex Male

Practice address Wauwatosa, WI, 53213

Phone (414) 254-5610

Fax (414) 755-7576

Enumeration date Jun 14, 2006

Last updated in NPPES Aug 11, 2021

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

Taxonomy & licenses

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 21597 (WI) 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
30454300	Medicaid	WI	-
1407899552	Medicaid	WI	-

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

What is the NPI number for William Annesley?

The National Provider Identifier (NPI) for William Annesley is 1407899552, a Type 1 (individual) record in the CMS NPPES registry.

Where does William Annesley practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-11.