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William J. Hennessey, M.D.

Physical Medicine & Rehabilitation Physician in Greensburg, PA · enumerated 2006.

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

National Provider Identifier

1477589778

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Registry record

Entity type Individual (Type 1)
Name William J. Hennessey
Credential M.D.
Sex Male
Practice address 120 Village Dr, Greensburg, PA, 15601
Phone (724) 836-7590
Fax (724) 836-7570
Enumeration date Jun 25, 2006
Last updated in NPPES Oct 2, 2013

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License MD059682L (PA) 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
01641780 Medicaid PA -

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 Hennessey's NPI record?
Cross-check NPI 1477589778 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1477589778 active?
Yes, as of the latest NPPES snapshot, NPI 1477589778 is active (record last updated 2013-10-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-02.