Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gregory Peter Schenk, MD

Family Medicine Physician in Williamsville, NY · enumerated 2005.

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

National Provider Identifier

1558354837

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Registry record

Entity type Individual (Type 1)

Name Dr. Gregory Peter Schenk

Credential MD

Sex Male

Practice address 850 Hopkins Road, Williamsville, NY, 14221

Phone (716) 688-9641

Fax (716) 688-9645

Enumeration date Aug 23, 2005

Last updated in NPPES Nov 10, 2022

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 160770 (NY) 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
00889749	Medicaid	NY	-

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

Where does Gregory Schenk practice?

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

What is the NPI number for Gregory Schenk?

The National Provider Identifier (NPI) for Gregory Schenk is 1558354837, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-10.