Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Geoffrey Gillen, M.D.

Obstetrics & Gynecology Physician in Gretna, LA · enumerated 2006.

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

National Provider Identifier

1487717864

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Registry record

Entity type Individual (Type 1)

Name Dr. Geoffrey Gillen

Credential M.D.

Sex Male

Practice address 515 Westbank Expy, Gretna, LA, 70053

Phone (504) 366-7233

Fax (504) 362-5529

Enumeration date Dec 18, 2006

Last updated in NPPES Nov 22, 2022

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License TRN7866 (FL) Secondary

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 202143 (LA) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

What is the NPI number for Geoffrey Gillen?

The National Provider Identifier (NPI) for Geoffrey Gillen is 1487717864, a Type 1 (individual) record in the CMS NPPES registry.

Where does Geoffrey Gillen practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-11-22.