NPI Portal NPI Lookup & Verification

Ms. Marilyn J Brooks, RN,MSN,FNP-C

Ms. Marilyn J Brooks is a Family Nurse Practitioner provider (Nurse Practitioner) practicing in Riverside, CA, registered in the NPPES registry with NPI 1366641821 since 2007. The credential RN stands for Registered Nurse.

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NPI 1366641821
Entity type Individual (Type 1)
Name Ms. Marilyn J Brooks
Credential RN,MSN,FNP-C
Sex Female
Practice address 5870 ARLINGTON AVE, Riverside, CA, 92504
Phone 9516836596
Fax 9516834239
Enumeration date 2007-07-15
Last updated in NPPES 2023-03-07

Taxonomy & licenses

Taxonomy code Specialty Primary License State
363LF0000X Family Nurse Practitioner Primary 13224 CA

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

Copy-ready billing details
Provider: Marilyn Brooks, RN,MSN,FNP-C
NPI: 1366641821
Taxonomy: 363LF0000X (Family Nurse Practitioner)
Address: 5870 ARLINGTON AVE, Riverside, CA, 92504

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1144248410 Violeta De Jesus Individual Internal Medicine Physician Riverside, CA
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1770622961 John Oconnell Individual Addiction (Substance Use Disorder) Counselor Riverside, CA
1043347917 Najma Mashadi Individual Clinical Social Worker Riverside, CA
1992928022 Ana Lopez Individual Marriage & Family Therapist Riverside, CA
1356543003 Kathy Riley Individual Marriage & Family Therapist Riverside, CA
1225236516 Julie Kasarjian Individual Emergency Medicine Physician Riverside, CA
1730389214 Betsy Mccalister Individual Clinical Social Worker Riverside, CA

Verify this record

Cross-check NPI 1366641821 against the authoritative CMS record: view Ms. Marilyn J Brooks on the official NPPES registry .

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 or validate an NPI number.

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 Marilyn Brooks?
Marilyn Brooks is registered in NPPES with the primary taxonomy of Family Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2023-03-07.