LEAH BLOCK
NPI 1386824340
Social Worker - Clinical in Hauppauge, NY
About Leah Block NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEAH BLOCK (NPI 1386824340) is an individual clinical provider in Hauppauge, New York, licensed in New York (R039092-1) and active in the NPI registry since November 2007. She is enrolled in Medicare PECOS, is affiliated with Long Island Jewish Medical Center, and is a graduate of Other (1988).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Leah Block is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Leah Block reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Long Island Jewish Medical Center
Acute Care Hospitals · New Hyde Park, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11788 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
HAUPPAUGE, NY 11788
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Leah Block's NPI number?
The NPI number for Leah Block is 1386824340. It was assigned to this individual provider in the NPPES registry on November 7, 2007.
Where is Leah Block located?
Leah Block practices at 523 Townline Rd Suite 9, Hauppauge, NY 11788. The listed phone number is (516) 241-6465.
What is Leah Block's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Leah Block enrolled in Medicare?
Yes. Leah Block is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Leah Block's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leah Block reassigns Medicare benefits to North Shore-Lij Medical PC (Great Neck, NY). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Leah Block's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Leah Block accept?
Health plans from Oscar Health list Leah Block as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Leah Block affiliated with any hospitals?
According to CMS data, Leah Block is affiliated with Long Island Jewish Medical Center.
When was this NPI record last updated?
The NPPES record for Leah Block was last updated on August 4, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Leah Block · NPI 1386824340
Clinical provider in Hauppauge, New York. Individual provider, active in the CMS NPPES registry since November 7, 2007.
## Identity
- **NPI:** 1386824340 (Entity type: Individual)
- **Enumerated:** November 7, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** R039092-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 523 TOWNLINE RD, SUITE 9, Hauppauge, NY 11788-2827
- **Phone:** (516) 241-6465
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1988
## Record status
- **NPPES last updated:** August 4, 2015
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Source: [NPI Profile](https://npiprofile.com/npi/1386824340) · Data from the CMS NPPES public registry.