DR. BARRETT EISENSTAT M.D.
NPI 1285631176
Dermatology in Oceanside, NY
About Dr. Barrett Eisenstat M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. BARRETT EISENSTAT M.D. (NPI 1285631176) is an individual dermatology provider in Oceanside, New York, licensed in New York (130692-2) and active in the NPI registry since July 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Barrett Eisenstat M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Barrett Eisenstat reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oceanside, NY 11572
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: South Nassau Dermatology PC
- 12 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11572 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Barrett Eisenstat's NPI number?
The NPI number for Barrett Eisenstat is 1285631176. It was assigned to this individual provider in the NPPES registry on July 7, 2005.
Where is Barrett Eisenstat located?
Barrett Eisenstat practices at 258 Merrick Rd, Oceanside, NY 11572. The listed phone number is (516) 766-0345.
What is Barrett Eisenstat's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is Barrett Eisenstat enrolled in Medicare?
Yes. Barrett Eisenstat is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Barrett Eisenstat's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Barrett Eisenstat reassigns Medicare benefits to South Nassau Dermatology P.C. (Oceanside, 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 Barrett Eisenstat's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Barrett Eisenstat was last updated on September 14, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.