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DR. ROSALYN SHEREE WARREN LCSW
NPI 1073645677
Social Worker - Clinical in Lancaster, CA

Active since March 09, 2007PECOS Enrolled
44228 HAMPTON ST, LANCASTER, CA 93536(909) 728-3567 Get Directions Write a Review

NPPES record last updated: June 2, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jun 2, 2026, May 14, 2025, Sep 9, 2019 (3 updates tracked since 2019).

About Dr. Rosalyn Sheree Warren Lcsw NPPES

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

DR. ROSALYN SHEREE WARREN LCSW (NPI 1073645677) is an individual clinical provider in Lancaster, California, licensed in California (20937) and active in the NPI registry since March 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1073645677
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameDR. ROSALYN SHEREE WARRENCredential: LCSW
Location Address44228 HAMPTON STLancaster, CA 93536-7512
Mailing Address44228 Hampton StLancaster, CA 93536-7512 · (909) 728-3567
Phone(909) 728-3567
Sole ProprietorYes
Enumeration DateMarch 9, 2007
Last NPPES UpdateJune 2, 20263 updates tracked since enumeration
NPPES CertifiedJune 2, 2026
✔ NPI 1073645677 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in CA · 20937✔ Licensed in NV · 13200-C
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
44228 HAMPTON ST, Lancaster, CA 93536
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Providence Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Rosalyn Sheree Warren Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93536 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
$0.00 typical visit price
range $62.96 – $187.60
Typical copayment $0.00 (range $15.74 – $46.90)
Most-billed visit code NA
Established Patient
$77.96 typical visit price
range $20.84 – $153.61
Typical copayment $19.49 (range $5.21 – $38.40)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Rosalyn Warren's NPI number?

The NPI number for Rosalyn Warren is 1073645677. It was assigned to this individual provider in the NPPES registry on March 9, 2007.

Where is Rosalyn Warren located?

Rosalyn Warren practices at 44228 Hampton St, Lancaster, CA 93536. The listed phone number is (909) 728-3567.

What is Rosalyn Warren's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Rosalyn Warren enrolled in Medicare?

Yes. Rosalyn Warren is registered in the Medicare PECOS enrollment system.

What insurance does Rosalyn Warren accept?

Health plans from Providence Health Plan list Rosalyn Warren as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Rosalyn Warren was last updated on June 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.