Crewson Martin, M.S.W., L-C.S.W.
NPI 1659318848 · Clinical Social Worker · Port Jefferson, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Crewson Martin, M.S.W., L-C.S.W. is a Clinical Social Worker provider in Port Jefferson, NY (NPI 1659318848).
Provider details
- NPI number
- 1659318848
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- M.S.W., L-C.S.W.
- Sex
- Male
- Sole proprietor
- Yes
- License
- R038729-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
20 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
- 2006-05-31
- Last updated
- 2022-11-16
- Certified
- 2022-11-16
Frequently asked questions
- What is Crewson Martin's NPI number?
- Crewson Martin's National Provider Identifier (NPI) is 1659318848, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Crewson Martin's specialty?
- Crewson Martin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Crewson Martin located?
- Crewson Martin's practice location on file with NPPES is 210 Liberty Ave, Port Jefferson, NY 11777-2010.
- What is Crewson Martin's phone number?
- The practice phone number listed in the NPPES registry for Crewson Martin is (631) 880-2531.
- Does Crewson Martin accept Medicare?
- Crewson Martin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Crewson Martin's NPI active?
- Yes — Crewson Martin's NPI (1659318848) is active in the NPPES registry as of the last update on 2022-11-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.