NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Martha Irene Vandeventer, R.N.

Registered Nurse in Placentia, CA · enumerated 2011.

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

National Provider Identifier

1083909899

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Registry record

Entity type Individual (Type 1)
Name Mrs. Martha Irene Vandeventer
Credential R.N.
Sex Female
Practice address 2001 E Orangethorpe Ave Ste D, Placentia, CA, 92870
Phone (714) 524-5545
Enumeration date Jun 9, 2011
Last updated in NPPES Jun 9, 2011

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 275799 (CA) Primary
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN credential

Other identifiers

Identifier Type State Issuer
33-0150193 Other CA MEDI-CAL

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

Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Martha Vandeventer?
Martha Vandeventer is registered in NPPES with the primary taxonomy of Registered Nurse. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-09.