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William T Monacci, MD

Neurological Surgery Physician in Lancaster, PA · enumerated 2006.

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

National Provider Identifier

1164493565

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Registry record

Entity type Individual (Type 1)
Name William T Monacci
Credential MD
Sex Male
Practice address 1671 Crooked Oak Drive, Lancaster, PA, 17601
Phone (717) 569-5331
Fax (717) 569-4210
Enumeration date Feb 1, 2006
Last updated in NPPES Jun 27, 2012

Taxonomy & licenses

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License MD043038E (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
18237290002 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

Is NPI 1164493565 active?
Yes, as of the latest NPPES snapshot, NPI 1164493565 is active (record last updated 2012-06-27).
How do I verify William Monacci's NPI record?
Cross-check NPI 1164493565 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-27.