Matthew Walker, L.C.S.W.
NPI 1689891400 · Clinical Social Worker · New York, NY
Matthew Walker, L.C.S.W. is a Clinical Social Worker provider in New York, NY (NPI 1689891400).
Provider details
- NPI number
- 1689891400
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- L.C.S.W.
- Sex
- Male
- Sole proprietor
- No
- License
- R057676-1 (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
19 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
- 2007-04-20
- Last updated
- 2012-06-13
Frequently asked questions
- What is Matthew Walker's NPI number?
- Matthew Walker's National Provider Identifier (NPI) is 1689891400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Walker's specialty?
- Matthew Walker is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Matthew Walker located?
- Matthew Walker's practice location on file with NPPES is 1468 Madison Ave, New York, NY 10029-6508.
- What is Matthew Walker's phone number?
- The practice phone number listed in the NPPES registry for Matthew Walker is (212) 659-8752.
- Is Matthew Walker's NPI active?
- Yes — Matthew Walker's NPI (1689891400) is active in the NPPES registry as of the last update on 2012-06-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.