Matthew Diamond, LMSW
NPI 1275296618 · Clinical Social Worker · New Rochelle, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Diamond, LMSW is a Clinical Social Worker provider in New Rochelle, NY (NPI 1275296618).
Provider details
- NPI number
- 1275296618
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- No
- License
- 101235 (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
4 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
- 2021-10-21
- Last updated
- 2025-12-03
- Certified
- 2025-12-03
Frequently asked questions
- What is Matthew Diamond's NPI number?
- Matthew Diamond's National Provider Identifier (NPI) is 1275296618, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Diamond's specialty?
- Matthew Diamond is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Matthew Diamond located?
- Matthew Diamond's practice location on file with NPPES is 481 Main St, New Rochelle, NY 10801-6324.
- What is Matthew Diamond's phone number?
- The practice phone number listed in the NPPES registry for Matthew Diamond is (914) 355-2440.
- Does Matthew Diamond accept Medicare?
- Matthew Diamond is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Diamond's NPI active?
- Yes — Matthew Diamond's NPI (1275296618) is active in the NPPES registry as of the last update on 2025-12-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.