JOHN MATTHEW ALEXANDER MD
NPI 1932465911
Ophthalmology - Retina Specialist in East Meadow, NY
About John Matthew Alexander Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN MATTHEW ALEXANDER MD (NPI 1932465911) is an individual retina specialist in East Meadow, New York, licensed in New York (280857) and active in the NPI registry since April 2012. He is enrolled in Medicare PECOS, is affiliated with Nassau University Medical Center, and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
John Matthew Alexander Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show John Alexander reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
East Meadow, NY 11554
- Reassigned Medicare billing, New York enrollment
- 553 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.
Areas of Expertise CMS Part B claims 10
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Nassau University Medical Center
Acute Care Hospitals · East Meadow, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11554 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
EAST MEADOW, NY 11554
EAST MEADOW, NY 11554
EAST MEADOW, NY 11554
EAST MEADOW, NY 11554
EAST MEADOW, NY 11554
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 Alexander's NPI number?
The NPI number for John Alexander is 1932465911. It was assigned to this individual provider in the NPPES registry on April 4, 2012.
Where is John Alexander located?
John Alexander practices at 2201 Hempstead Tpke, East Meadow, NY 11554. The listed phone number is (516) 572-6706.
What is John Alexander's specialty?
The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.
Is John Alexander enrolled in Medicare?
Yes. John Alexander is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for John Alexander's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Alexander reassigns Medicare benefits to Nassau Health Care Corporation (East Meadow, 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 Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Alexander affiliated with any hospitals?
According to CMS data, John Alexander is affiliated with Nassau University Medical Center.
When was this NPI record last updated?
The NPPES record for John Alexander was last updated on March 29, 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.
# John Matthew Alexander, MD · NPI 1932465911
Retina Specialist physician in East Meadow, New York. Individual provider, active in the CMS NPPES registry since April 4, 2012.
## Identity
- **NPI:** 1932465911 (Entity type: Individual)
- **Enumerated:** April 4, 2012
- **Primary specialty:** Ophthalmology - Retina Specialist · taxonomy 207WX0107X
- **State license:** 280857 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2201 HEMPSTEAD TPKE, East Meadow, NY 11554-1859
- **Phone:** (516) 572-6706 · **Fax:** (516) 572-9477
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Nassau Health Care Corporation (NPI 1003832098, East Meadow, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** March 29, 2017
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Source: [NPI Profile](https://npiprofile.com/npi/1932465911) · Data from the CMS NPPES public registry.