NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. William A Wilfley Jr., M.D.

Surgery Physician in Wausau, WI · enumerated 2006.

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

National Provider Identifier

1619997046

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Registry record

Entity type Individual (Type 1)
Name Mr. William A Wilfley Jr.
Credential M.D.
Sex Male
Practice address 2606 Stewart Ave Ste 200, Wausau, WI, 54401
Phone (715) 847-2022
Enumeration date Jul 20, 2006
Last updated in NPPES Feb 17, 2025

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 60454 (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
8943482 Other WA CRIME VICTIMS
P00380119 Other - RAILROAD MEDICARE
100031344 Medicaid WI -
217046 Other WA LABOR & IND.

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 Wilfley's NPI record?
Cross-check NPI 1619997046 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1619997046 active?
Yes, as of the latest NPPES snapshot, NPI 1619997046 is active (record last updated 2025-02-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-02-17.