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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marshall John Grignon, PHARM.D.

Pharmacist in Syracuse, NY · enumerated 2010 · practices at Walgreen Co.

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

National Provider Identifier

1487961199

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Registry record

Entity type Individual (Type 1)
Name Dr. Marshall John Grignon
Credential PHARM.D.
Sex Male
Practice address 522 W Onondaga St, Syracuse, NY, 13204
Phone (315) 475-1366
Enumeration date Sep 2, 2010
Last updated in NPPES Sep 2, 2010

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 054625 (NY) Primary
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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

Is NPI 1487961199 active?
Yes, as of the latest NPPES snapshot, NPI 1487961199 is active (record last updated 2010-09-02).
How do I verify Marshall Grignon's NPI record?
Cross-check NPI 1487961199 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 2010-09-02.