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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

ALYSSA MOSS LCSW
NPI 1285306498
Social Worker - Clinical in San Mateo, CA

Active since October 05, 2021PECOS Enrolled
50 S SAN MATEO DR STE 480, SAN MATEO, CA 94401(415) 418-0998 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 16, 2026, Oct 5, 2021 (2 updates tracked since 2021).

About Alyssa Moss Lcsw NPPES

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

ALYSSA MOSS LCSW (NPI 1285306498) is an individual clinical provider in San Mateo, California, licensed in California (LCSW100704) and active in the NPI registry since October 2021. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1285306498
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameALYSSA MOSSCredential: LCSW
Location Address50 S SAN MATEO DR STE 480San Mateo, CA 94401-3833
Mailing Address50 S San Mateo Dr Ste 480San Mateo, CA 94401-3833 · (650) 696-2220
Phone(415) 418-0998
Sole ProprietorNo
Enumeration DateOctober 5, 2021
Last NPPES UpdateJuly 16, 20262 updates tracked since enumeration
NPPES CertifiedJuly 16, 2026
✔ NPI 1285306498 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in CA · LCSW100704
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.
50 S SAN MATEO DR STE 480, San Mateo, CA 94401
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Other Names 1

Former Name (1)Alyssa Kasten

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alyssa Moss 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 94401 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 $69.00 – $202.35
Typical copayment $0.00 (range $17.25 – $50.58)
Most-billed visit code NA
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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.

Other Providers at the Same Location NPPES 3

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

RAMY SALAH M.D.
Internal Medicine (Hospice and Palliative Medicine)
50 S SAN MATEO DR STE 480
SAN MATEO, CA 94401
San Mateo County (650) 696-2220
PATRICK SCOTT CONARD NP
Nurse Practitioner
50 S SAN MATEO DR STE 480
SAN MATEO, CA 94401
San Mateo County (831) 566-7523
JILL BRYON NP
Nurse Practitioner
50 S SAN MATEO DR STE 480
SAN MATEO, CA 94401
San Mateo County (650) 696-2220

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 Alyssa Moss's NPI number?

The NPI number for Alyssa Moss is 1285306498. It was assigned to this individual provider in the NPPES registry on October 5, 2021. The provider is also known as Alyssa Kasten.

Where is Alyssa Moss located?

Alyssa Moss practices at 50 S San Mateo Dr Ste 480, San Mateo, CA 94401. The listed phone number is (415) 418-0998.

What is Alyssa Moss's specialty?

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

Is Alyssa Moss enrolled in Medicare?

Yes. Alyssa Moss is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Alyssa Moss was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 29 days 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.