BORIS MATUSEVICH MD
NPI 1952379356
Anesthesiology in West Islip, NY
About Boris Matusevich Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
BORIS MATUSEVICH MD (NPI 1952379356) is an individual anesthesiology provider in West Islip, New York, licensed in New York (217094-1) and active in the NPI registry since March 2006. He is enrolled in Medicare PECOS and is a graduate of Other (1975).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 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
Boris Matusevich 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 Boris Matusevich reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
West Islip, NY 11795
- Reassigned Medicare billing, New York enrollment
- 13 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 4
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.
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.
WEST ISLIP, NY 11795
WEST ISLIP, NY 11795
WEST ISLIP, NY 11795
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 Boris Matusevich's NPI number?
The NPI number for Boris Matusevich is 1952379356. It was assigned to this individual provider in the NPPES registry on March 10, 2006.
Where is Boris Matusevich located?
Boris Matusevich practices at 1175 Montauk Hwy Suite 1, West Islip, NY 11795. The listed phone number is (631) 321-0570.
What is Boris Matusevich's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Boris Matusevich enrolled in Medicare?
Yes. Boris Matusevich 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 Boris Matusevich's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Boris Matusevich reassigns Medicare benefits to Island Gastroenterology Consultants PC (West Islip, 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 Boris Matusevich'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 Boris Matusevich was last updated on March 3, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.