Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Leanne Rebecca Sinsky, LMSW
Social Worker in Marlboro, NJ · enumerated 2023.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1487339594
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Registry record
Entity type Individual (Type 1)
Name Leanne Rebecca Sinsky
Credential LMSW
Sex Female
Practice address 40 Jennifer Ct, Marlboro, NJ, 07746
Phone (908) 670-1437
Enumeration date Jun 16, 2023
Last updated in NPPES Jun 16, 2023
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 44SL06950100 (NJ) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Leanne Sinsky?
The National Provider Identifier (NPI) for Leanne Sinsky is 1487339594, a Type 1 (individual) record in the CMS NPPES registry.
Where does Leanne Sinsky practice?
The practice location on file with NPPES is in Marlboro, NJ. Providers can have multiple locations; NPPES lists the primary practice address.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-06-16.