Joseph Losi, M.A. LMFTA
NPI 1366730343 · Marriage & Family Therapist · Seattle, WA
Joseph Losi, M.A. LMFTA is a Marriage & Family Therapist provider in Seattle, WA (NPI 1366730343).
Provider details
- NPI number
- 1366730343
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Credential
- M.A. LMFTA
- Sex
- Male
- Sole proprietor
- Yes
- License
- MG60154746 (WA)
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
14 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
- 2011-07-12
- Last updated
- 2011-07-12
Frequently asked questions
- What is Joseph Losi's NPI number?
- Joseph Losi's National Provider Identifier (NPI) is 1366730343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Losi's specialty?
- Joseph Losi is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Joseph Losi located?
- Joseph Losi's practice location on file with NPPES is 1800 Westlake Ave N, Seattle, WA 98109-2704.
- What is Joseph Losi's phone number?
- The practice phone number listed in the NPPES registry for Joseph Losi is (206) 595-2577.
- Is Joseph Losi's NPI active?
- Yes — Joseph Losi's NPI (1366730343) is active in the NPPES registry as of the last update on 2011-07-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.