NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gary R Geffken, PH D

Clinical Psychologist in Gainesville, FL · enumerated 2006 · practices at Geffken Group, Pllc.

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

National Provider Identifier

1265473276

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. Gary R Geffken
Credential PH D
Sex Male
Practice address 2833 Nw 41st St, Unit 140, Gainesville, FL, 32606
Fax (352) 376-5781
Enumeration date Jun 9, 2006
Last updated in NPPES Apr 7, 2017

Taxonomy & licenses

103T00000X Psychologist Behavioral Health & Social Service Providers · License PY3729 (FL) Secondary
103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License PY3729 (FL) Primary
PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

Other identifiers

Identifier Type State Issuer
042063800 Medicaid FL -

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

What is the NPI number for Gary Geffken?
The National Provider Identifier (NPI) for Gary Geffken is 1265473276, a Type 1 (individual) record in the CMS NPPES registry.
Where does Gary Geffken practice?
The practice location on file with NPPES is in Gainesville, FL. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-04-07.