Matthew Kossin, LCSW
NPI 1649111717 · Clinical Social Worker · Forest Hills, NY
Matthew Kossin, LCSW is a Clinical Social Worker provider in Forest Hills, NY (NPI 1649111717).
Provider details
- NPI number
- 1649111717
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 102467 (NY)
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
Under 1 yr in 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
- 2026-04-02
- Last updated
- 2026-04-02
- Certified
- 2026-04-02
Frequently asked questions
- What is Matthew Kossin's NPI number?
- Matthew Kossin's National Provider Identifier (NPI) is 1649111717, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Kossin's specialty?
- Matthew Kossin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Matthew Kossin located?
- Matthew Kossin's practice location on file with NPPES is 10837 71st Ave Apt 10j, Forest Hills, NY 11375-4520.
- What is Matthew Kossin's phone number?
- The practice phone number listed in the NPPES registry for Matthew Kossin is (516) 476-3791.
- Is Matthew Kossin's NPI active?
- Yes — Matthew Kossin's NPI (1649111717) is active in the NPPES registry as of the last update on 2026-04-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.