Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jeffrey Grannick, PHARMD

Pharmacist in Greenwich, CT · enumerated 2023.

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

National Provider Identifier

1598538159

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Registry record

Entity type Individual (Type 1)

Name Jeffrey Grannick

Credential PHARMD

Sex Male

Practice address 122 E Putnam Ave, Greenwich, CT, 06830

Phone (203) 422-2129

Enumeration date Nov 3, 2023

Last updated in NPPES Nov 3, 2023

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 0012327 (CT) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Jeffrey Grannick practice?

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

What is the NPI number for Jeffrey Grannick?

The National Provider Identifier (NPI) for Jeffrey Grannick is 1598538159, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-03.