Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Darla Oak

Nurse Practitioner in Reseda, CA · enumerated 2006.

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

National Provider Identifier

1891868337

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Registry record

Entity type Individual (Type 1)

Name Darla Oak

Sex Female

Practice address 7150 Tampa Ave, Reseda, CA, 91335

Phone (818) 774-3354

Enumeration date Nov 15, 2006

Last updated in NPPES Jun 4, 2009

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 582844 (CA) Primary

Other identifiers

Identifier	Type	State	Issuer
P00420530	Other	CA	RAILROAD MEDICARE

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

Is NPI 1891868337 active?

Yes, as of the latest NPPES snapshot, NPI 1891868337 is active (record last updated 2009-06-04).

How do I verify Darla Oak's NPI record?

Cross-check NPI 1891868337 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-06-04.