MATHEW BIRNBAUM MD
NPI 1306334388
Dermatology in Greenlawn, NY
About Mathew Birnbaum Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATHEW BIRNBAUM MD (NPI 1306334388) is an individual dermatology provider in Greenlawn, New York, licensed in New York (315891) and active in the NPI registry since April 2018. He is enrolled in Medicare PECOS, maintains a secondary practice location in New York, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2018).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
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
Mathew Birnbaum 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 Mathew Birnbaum reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Greenlawn, NY 11740
- Reassigned Medicare billing, New York enrollment
- 572 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 12
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11740 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.
GREENLAWN, NY 11740
GREENLAWN, NY 11740
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 Mathew Birnbaum's NPI number?
The NPI number for Mathew Birnbaum is 1306334388. It was assigned to this individual provider in the NPPES registry on April 25, 2018.
Where is Mathew Birnbaum located?
Mathew Birnbaum practices at 5 Cuba Hill Rd, Greenlawn, NY 11740. The listed phone number is (631) 628-5000.
What is Mathew Birnbaum's specialty?
The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.
Is Mathew Birnbaum enrolled in Medicare?
Yes. Mathew Birnbaum 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 Mathew Birnbaum's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mathew Birnbaum reassigns Medicare benefits to North Shore Medical Group Of The Mount Sinai School Of Medicine (Greenlawn, 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 Mathew Birnbaum'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 Mathew Birnbaum was last updated on June 8, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.