Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Melissa Ann Nicholas, RN, BSN, PHN

Registered Nurse in Oxnard, CA · enumerated 2011.

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

National Provider Identifier

1770851297

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Registry record

Entity type Individual (Type 1)

Name Melissa Ann Nicholas

Credential RN, BSN, PHN

Sex Female

Practice address Oxnard, CA, 93036

Phone (805) 981-5115

Enumeration date Dec 12, 2011

Last updated in NPPES Dec 12, 2011

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers · License 799377 (CA) Primary

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

Where does Melissa Nicholas practice?

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

What is the NPI number for Melissa Nicholas?

The National Provider Identifier (NPI) for Melissa Nicholas is 1770851297, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Victor Sanchez Psychologist · Oxnard, CA NPI 1972721595 Karen Crawford Case Manager/Care Coordinator · Oxnard, CA NPI 1902085079 Morgan Lyons Internal Medicine Physician · Oxnard, CA NPI 1578790135 Estella Sweeney Case Manager/Care Coordinator · Oxnard, CA NPI 1811266752 Liliana Herrera Registered Nurse · Oxnard, CA NPI 1902170681 Julieta Lopez-Herrera Case Manager/Care Coordinator · Oxnard, CA NPI 1407112154 Sandra Tolmie Case Manager/Care Coordinator · Oxnard, CA NPI 1922343284 Theresa Somerville Case Manager/Care Coordinator · Oxnard, CA NPI 1851711865

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-12.