IndividualActive
Marc Mastropolo, LCSW
NPI 1366858664 · Clinical Social Worker · Holbrook, NY
Marc Mastropolo, LCSW is a Clinical Social Worker provider in Holbrook, NY (NPI 1366858664).
Provider details
- NPI number
- 1366858664
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 084953-01 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(75/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
60 Cannon Dr
Holbrook, NY 11741-5219
Phone: (631) 793-7256
Street-level locationGet directions
Mailing address
60 Cannon Dr
Holbrook, NY 11741-5219
Registry dates
- Enumerated
- 2014-07-08
- Last updated
- 2022-04-18
- Certified
- 2022-04-18
Frequently asked questions
- What is Marc Mastropolo's NPI number?
- Marc Mastropolo's National Provider Identifier (NPI) is 1366858664, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Mastropolo's specialty?
- Marc Mastropolo is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Marc Mastropolo located?
- Marc Mastropolo's practice location on file with NPPES is 60 Cannon Dr, Holbrook, NY 11741-5219.
- What is Marc Mastropolo's phone number?
- The practice phone number listed in the NPPES registry for Marc Mastropolo is (631) 793-7256.
- Is Marc Mastropolo's NPI active?
- Yes — Marc Mastropolo's NPI (1366858664) is active in the NPPES registry as of the last update on 2022-04-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.