Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William C. O'Meally, M.D.

Family Medicine Physician in Milwaukee, WI · enumerated 2007.

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

National Provider Identifier

1992825582

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Registry record

Entity type Individual (Type 1)

Name William C. O'Meally

Credential M.D.

Sex Male

Practice address 5007 S Howell Ave, Milwaukee, WI, 53207

Phone (414) 483-7777

Fax (414) 483-7914

Enumeration date Mar 29, 2007

Last updated in NPPES May 31, 2013

Taxonomy & licenses

2083X0100X Occupational Medicine Physician Allopathic & Osteopathic Physicians · License 39590 (WI) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 39590 (WI) Primary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License D0074982 (MD) Secondary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for William O'Meally?

The National Provider Identifier (NPI) for William O'Meally is 1992825582, a Type 1 (individual) record in the CMS NPPES registry.

Where does William O'Meally practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-05-31.