Hasmig Tatiossian, LCSW
NPI 1659080695 · Social Worker · Santa Rosa, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Hasmig Tatiossian, LCSW is a Social Worker provider in Santa Rosa, CA (NPI 1659080695).
Provider details
- NPI number
- 1659080695
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 125498 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-11-18
- Last updated
- 2026-01-14
- Certified
- 2026-01-14
Frequently asked questions
- What is Hasmig Tatiossian's NPI number?
- Hasmig Tatiossian's National Provider Identifier (NPI) is 1659080695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hasmig Tatiossian's specialty?
- Hasmig Tatiossian is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Hasmig Tatiossian located?
- Hasmig Tatiossian's practice location on file with NPPES is 2225 Challenger Way, Santa Rosa, CA 95407-5441.
- What is Hasmig Tatiossian's phone number?
- The practice phone number listed in the NPPES registry for Hasmig Tatiossian is (707) 565-6900.
- Does Hasmig Tatiossian accept Medicare?
- Hasmig Tatiossian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Hasmig Tatiossian's NPI active?
- Yes — Hasmig Tatiossian's NPI (1659080695) is active in the NPPES registry as of the last update on 2026-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.