Marc Schnall, LCSW-R
NPI 1336326529 · Clinical Social Worker · Garden City, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marc Schnall, LCSW-R is a Clinical Social Worker provider in Garden City, NY (NPI 1336326529).
Provider details
- NPI number
- 1336326529
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW-R
- Sex
- Male
- Sole proprietor
- Yes
- License
- R044907 (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
18 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 7 Winding RdN Massapequa, NY 11758-3253Phone: (516) 477-0210
Registry dates
- Enumerated
- 2008-01-30
- Last updated
- 2021-11-22
- Certified
- 2021-11-22
Frequently asked questions
- What is Marc Schnall's NPI number?
- Marc Schnall's National Provider Identifier (NPI) is 1336326529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marc Schnall's specialty?
- Marc Schnall is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Marc Schnall located?
- Marc Schnall's practice location on file with NPPES is 501 Franklin Ave Ste 140, Garden City, NY 11530-5807.
- What is Marc Schnall's phone number?
- The practice phone number listed in the NPPES registry for Marc Schnall is (516) 267-5553.
- Does Marc Schnall accept Medicare?
- Marc Schnall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marc Schnall's NPI active?
- Yes — Marc Schnall's NPI (1336326529) is active in the NPPES registry as of the last update on 2021-11-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.