Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Thomas Allan Jeffers, RN

Registered Nurse in Bakersfield, CA · enumerated 2007.

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

National Provider Identifier

1689865610

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Registry record

Entity type Individual (Type 1)

Name Thomas Allan Jeffers

Credential RN

Sex Male

Practice address 5121 Stockdale Hwy, Ste 275, Bakersfield, CA, 93309

Phone (661) 868-6601

Fax (661) 868-6666

Enumeration date Aug 6, 2007

Last updated in NPPES Aug 6, 2007

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License RN 42517 (CA) Primary

163WP0808X Psychiatric/Mental Health Registered Nurse Nursing Service Providers · License RN 425170 (CA) Secondary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

How do I verify Thomas Jeffers's NPI record?

Cross-check NPI 1689865610 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1689865610 active?

Yes, as of the latest NPPES snapshot, NPI 1689865610 is active (record last updated 2007-08-06).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-08-06.