HASMIG TATIOSSIAN LCSW
NPI 1659080695
Social Worker in Santa Rosa, CA

Q: What is Hasmig Tatiossian's NPI number?

The NPI number for Hasmig Tatiossian is 1659080695. It was assigned to this individual provider in the NPPES registry on November 18, 2022.

Q: What is Hasmig Tatiossian's specialty?

The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.

Q: When was this NPI record last updated?

The NPPES record for Hasmig Tatiossian was last updated on January 14, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.

Active since November 18, 2022PECOS EnrolledAccepts Medicare Assignment

2225 CHALLENGER WAY, SANTA ROSA, CA 95407(707) 565-6900 Get Directions Write a Review

NPPES record last updated: January 14, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jan 14, 2026, Nov 18, 2022 (2 updates tracked since 2022).

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About Hasmig Tatiossian Lcsw NPPES

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

HASMIG TATIOSSIAN LCSW (NPI 1659080695) is an individual social worker in Santa Rosa, California, licensed in California (125498) and active in the NPI registry since November 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1659080695

Entity TypeIndividualFemale

Primary Taxonomy104100000X

Provider Legal NameHASMIG TATIOSSIANCredential: LCSW

Location Address2225 CHALLENGER WAYSanta Rosa, CA 95407-5441

Mailing AddressPo Box 1347Rohnert Park, CA 94927-1347 · (818) 730-8130

Phone(707) 565-6900

Sole ProprietorNo

Medical School CMSOtherGraduated 2020

Enumeration DateNovember 18, 2022

Last NPPES UpdateJanuary 14, 20262 updates tracked since enumeration

NPPES CertifiedJanuary 14, 2026

✔ NPI 1659080695 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial WorkerBehavioral Health & Social Service Providers

Taxonomy Code104100000X

License✔ Licensed in CA · 125498

Definition

A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

2225 CHALLENGER WAY, Santa Rosa, CA 95407

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Hasmig Tatiossian Lcsw 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 ID6608301197

PECOS Enrollment IDI20241120003041

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.

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.

RACHEL J AVILA

Counselor (Addiction (Substance Use Disorder))