Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Doreen Riinya Muriithi

Family Nurse Practitioner in Palmdale, CA · enumerated 2023 · practices at Tarzana Treatment Centers, Inc..

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

National Provider Identifier

1104601327

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Registry record

Entity type Individual (Type 1)

Name Doreen Riinya Muriithi

Sex Female

Practice address 320 E Palmdale Blvd, Palmdale, CA, 93550

Phone (818) 654-3887

Enumeration date Aug 28, 2023

Last updated in NPPES Nov 13, 2025

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 95035408 (CA) Primary

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

Where does Doreen Muriithi practice?

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

What is the NPI number for Doreen Muriithi?

The National Provider Identifier (NPI) for Doreen Muriithi is 1104601327, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-11-13.