Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Greti Ileana Petersen

Internal Medicine Physician in Bakersfield, CA · enumerated 2006.

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

National Provider Identifier

1144252040

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Registry record

Entity type Individual (Type 1)

Name Dr. Greti Ileana Petersen

Sex Male

Practice address 625 34th St Ste 100&200, Bakersfield, CA, 93301

Phone (183) 367-8278

Fax (661) 368-0618

Enumeration date Jul 7, 2006

Last updated in NPPES Mar 6, 2024

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A93553 (CA) Primary

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

How do I verify Greti Petersen's NPI record?

Cross-check NPI 1144252040 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1144252040 active?

Yes, as of the latest NPPES snapshot, NPI 1144252040 is active (record last updated 2024-03-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-06.