JOHN PATRICK BRENNAN M.D.
NPI 1932285772
Ophthalmology in Manhasset, NY
About John Patrick Brennan M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN PATRICK BRENNAN M.D. (NPI 1932285772) is an individual ophthalmology provider in Manhasset, New York, licensed in New York (097435) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
John Patrick Brennan M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show John Brennan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Manhasset, NY 11030
- Reassigned Medicare billing, New York enrollment
- 6 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 11030 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MANHASSET, NY 11030
MANHASSET, NY 11030
MANHASSET, NY 11030
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 John Brennan's NPI number?
The NPI number for John Brennan is 1932285772. It was assigned to this individual provider in the NPPES registry on October 27, 2006.
Where is John Brennan located?
John Brennan practices at 1615 Northern Blvd Suite 202, Manhasset, NY 11030. The listed phone number is (516) 627-0146.
What is John Brennan's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is John Brennan enrolled in Medicare?
Yes. John Brennan is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for John Brennan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Brennan reassigns Medicare benefits to Manhasset Eye Physicians, P.C. (Manhasset, 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 John Brennan'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 John Brennan was last updated on January 18, 2017. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.