Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Greg A Willhelm, PT

Physical Therapist in Danville, IN · enumerated 2008.

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

National Provider Identifier

1821265406

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Registry record

Entity type Individual (Type 1)

Name Mr. Greg A Willhelm

Credential PT

Sex Male

Practice address 1000 E Main St, Danville, IN, 46122

Phone (317) 745-3420

Fax (317) 745-8340

Enumeration date May 13, 2008

Last updated in NPPES May 13, 2008

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 05008706A (IN) Primary

PT · Physical Therapist: A licensed movement specialist treating injury and disability through exercise and rehabilitation. About the PT 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.

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Frequently asked questions

How do I verify Greg Willhelm's NPI record?

Cross-check NPI 1821265406 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1821265406 active?

Yes, as of the latest NPPES snapshot, NPI 1821265406 is active (record last updated 2008-05-13).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-13.