IndividualActive
Karen Losi, LCSW
NPI 1083439111 · Clinical Social Worker · Boston, MA
Karen Losi, LCSW is a Clinical Social Worker provider in Boston, MA (NPI 1083439111).
Provider details
- NPI number
- 1083439111
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- LCSW229299 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(55/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr 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
300 Longwood Ave
Boston, MA 02115-5724
Phone: (617) 355-2749
Street-level locationGet directions
Mailing address
46 Grampian Way
Boston, MA 02125-1035
Registry dates
- Enumerated
- 2024-11-22
- Last updated
- 2024-11-22
- Certified
- 2024-11-22
Frequently asked questions
- What is Karen Losi's NPI number?
- Karen Losi's National Provider Identifier (NPI) is 1083439111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Losi's specialty?
- Karen Losi is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Karen Losi located?
- Karen Losi's practice location on file with NPPES is 300 Longwood Ave, Boston, MA 02115-5724.
- What is Karen Losi's phone number?
- The practice phone number listed in the NPPES registry for Karen Losi is (617) 355-2749.
- Is Karen Losi's NPI active?
- Yes — Karen Losi's NPI (1083439111) is active in the NPPES registry as of the last update on 2024-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.