Leslie Pena-Sullivan, LCSW
NPI 1639459944 · Clinical Social Worker · Mamaroneck, NY
Enrolled with Medicare as Order and Referring Only - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leslie Pena-Sullivan, LCSW is a Clinical Social Worker provider in Mamaroneck, NY (NPI 1639459944).
Provider details
- NPI number
- 1639459944
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 081857 (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
14 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)
- 910 E Boston Post RdMamaroneck, NY 10543-4153Phone: (646) 725-5504
Registry dates
- Enumerated
- 2011-08-18
- Last updated
- 2019-06-17
Frequently asked questions
- What is Leslie Pena-Sullivan's NPI number?
- Leslie Pena-Sullivan's National Provider Identifier (NPI) is 1639459944, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie Pena-Sullivan's specialty?
- Leslie Pena-Sullivan is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Leslie Pena-Sullivan located?
- Leslie Pena-Sullivan's practice location on file with NPPES is 234 Stanley Ave, Mamaroneck, NY 10543-2530.
- What is Leslie Pena-Sullivan's phone number?
- The practice phone number listed in the NPPES registry for Leslie Pena-Sullivan is (914) 239-3006.
- Does Leslie Pena-Sullivan accept Medicare?
- Leslie Pena-Sullivan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leslie Pena-Sullivan's NPI active?
- Yes — Leslie Pena-Sullivan's NPI (1639459944) is active in the NPPES registry as of the last update on 2019-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.