Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greydon Sean Clark Gilmore, PH.D.

Other Technician in Atlanta, GA · enumerated 2024.

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

National Provider Identifier

1821812801

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Registry record

Entity type Individual (Type 1)

Name Dr. Greydon Sean Clark Gilmore

Credential PH.D.

Sex Male

Practice address 2521 Piedmont Rd Ne Apt 2325, Atlanta, GA, 30324

Phone (613) 852-9282

Enumeration date Nov 14, 2024

Last updated in NPPES Nov 14, 2024

Taxonomy & licenses

247200000X Other Technician Technologists, Technicians & Other Technical Service Providers Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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 Greydon Gilmore practice?

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

What is the NPI number for Greydon Gilmore?

The National Provider Identifier (NPI) for Greydon Gilmore is 1821812801, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-14.