Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

William R Vonah, MD

Internal Medicine Physician in Carlisle, PA · enumerated 2005.

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

National Provider Identifier

1912993007

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Registry record

Entity type Individual (Type 1)

Name William R Vonah

Credential MD

Sex Male

Practice address 220 Wilson St, Suite 109, Carlisle, PA, 17013

Phone (717) 249-1929

Fax (717) 249-9332

Enumeration date Sep 23, 2005

Last updated in NPPES Dec 16, 2022

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License MD417700 (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
0018903560001	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1912993007 active?

Yes, as of the latest NPPES snapshot, NPI 1912993007 is active (record last updated 2022-12-16).

How do I verify William Vonah's NPI record?

Cross-check NPI 1912993007 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 2022-12-16.