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DOREEN RIINYA MURIITHI
NPI 1104601327
Nurse Practitioner - Family in Palmdale, CA

Active since August 28, 2023PECOS EnrolledAccepts Medicare Assignment
320 E PALMDALE BLVD, PALMDALE, CA 93550(818) 654-3887 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 13, 2025, Aug 28, 2023 (2 updates tracked since 2023).

About Doreen Riinya Muriithi NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DOREEN RIINYA MURIITHI (NPI 1104601327) is an individual family provider in Palmdale, California, licensed in California (95035408) and active in the NPI registry since August 2023. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1104601327
Entity TypeIndividualFemale
Primary Taxonomy363LF0000X
Provider Legal NameDOREEN RIINYA MURIITHI
Location Address320 E PALMDALE BLVDPalmdale, CA 93550-4598
Mailing Address9001 Stockdale HwyBakersfield, CA 93311-1022 · (661) 654-2505
Phone(818) 654-3887
Sole ProprietorNo
Medical School CMSOtherGraduated 2025
Enumeration DateAugust 28, 2023
Last NPPES UpdateNovember 13, 20252 updates tracked since enumeration
NPPES CertifiedNovember 13, 2025
✔ NPI 1104601327 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · FamilyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LF0000X
License✔ Licensed in CA · 95035408
320 E PALMDALE BLVD, Palmdale, CA 93550
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Doreen Riinya Muriithi is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7012409014
PECOS Enrollment IDI20251126001666
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Doreen Muriithi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Tarzana Treatment Centers, Inc.
0.1 mi
Medical Specialty
320 E PALMDALE BLVD
Palmdale, CA 93550
  • Reassigned Medicare billing, California enrollment
  • 93 clinicians in this Medicare group
NPI 1285930396 (818) 996-1051

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93550 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ANTONIA M ROCHA RADT
Counselor (Addiction (Substance Use Disorder))
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (661) 729-9000
JOANNA GUTIERREZ
Counselor (Addiction (Substance Use Disorder))
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (818) 654-3887
PRINCESS ALEXANDRA SYLVE
Peer Specialist
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (818) 996-1051
JESSICA A PANTOJA RAS
Counselor (Addiction (Substance Use Disorder))
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (661) 729-9000
KARLA CORDERO
Counselor (Addiction (Substance Use Disorder))
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (818) 654-3887
JENNIFER WALLACE
Counselor (Addiction (Substance Use Disorder))
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (661) 729-9000
MR. GREGORY GLEN MAXWELL LMFT
Marriage & Family Therapist
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (661) 729-9000
TARZANA TREATMENT CENTERS, INC.
Clinic/Center (Medical Specialty)
320 E PALMDALE BLVD
PALMDALE, CA 93550
Los Angeles County (818) 996-1051

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Doreen Muriithi's NPI number?

The NPI number for Doreen Muriithi is 1104601327. It was assigned to this individual provider in the NPPES registry on August 28, 2023.

Where is Doreen Muriithi located?

Doreen Muriithi practices at 320 E Palmdale Blvd, Palmdale, CA 93550. The listed phone number is (818) 654-3887.

What is Doreen Muriithi's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.

Is Doreen Muriithi enrolled in Medicare?

Yes. Doreen Muriithi is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Doreen Muriithi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Doreen Muriithi reassigns Medicare benefits to Tarzana Treatment Centers, Inc. (Palmdale, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Doreen Muriithi's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Doreen Muriithi was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.