Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

W Marvin Day, PA

Physician Assistant in Granville, NY · enumerated 2006.

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

National Provider Identifier

1174591796

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Registry record

Entity type Individual (Type 1)

Name W Marvin Day

Credential PA

Sex Male

Practice address 79 North St, Granville Family Health, Granville, NY, 12832

Phone (518) 642-0612

Fax (518) 642-0693

Enumeration date Mar 9, 2006

Last updated in NPPES Feb 10, 2022

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 005618-1 (NY) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

Other identifiers

Identifier	Type	State	Issuer
P00466854	Other	NY	RR MEDICARE

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

How do I verify W Day's NPI record?

Cross-check NPI 1174591796 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1174591796 active?

Yes, as of the latest NPPES snapshot, NPI 1174591796 is active (record last updated 2022-02-10).

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Timothy Cook Family Medicine Physician · Granville, NY NPI 1720071095 Ann Gregory Family Nurse Practitioner · Granville, NY NPI 1487645826 Gordon Thomas Family Medicine Physician · Granville, NY NPI 1083665582 Cynthia Short Internal Medicine Physician · Granville, NY NPI 1306974845 North Country Sports Medicine Pllc Orthopaedic Surgery Physician · Granville, NY NPI 1417211962 Glens Falls Hospital Inc Family Medicine Physician · Granville, NY NPI 1619222759 Mallory Edwards Physician Assistant · Granville, NY NPI 1467876409 Brandy Wadsworth Psychiatric/Mental Health Nurse Practitioner · Granville, NY NPI 1881186930

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-02-10.