MR. MARK POLISHCHUK OTR
NPI 1821743691
Occupational Therapist in Brooklyn, NY
About Mr. Mark Polishchuk Otr NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. MARK POLISHCHUK OTR (NPI 1821743691) is an individual occupational therapist in Brooklyn, New York, licensed in New York (025413) and active in the NPI registry since February 2022.
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 (PECOS)
Mr. Mark Polishchuk Otr is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Mark Polishchuk reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Brooklyn, NY 11235
- Reassigned Medicare billing, New York enrollment
- 33 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 5
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.
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 Mark Polishchuk's NPI number?
The NPI number for Mark Polishchuk is 1821743691. It was assigned to this individual provider in the NPPES registry on February 19, 2022.
Where is Mark Polishchuk located?
Mark Polishchuk practices at 2579 E 17th St, Brooklyn, NY 11235. The listed phone number is (347) 907-3754.
What is Mark Polishchuk's specialty?
The primary specialty registered for this NPI is Occupational Therapist with taxonomy code 225X00000X.
Is Mark Polishchuk enrolled in Medicare?
Yes. Mark Polishchuk is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Mark Polishchuk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mark Polishchuk reassigns Medicare benefits to At Your Doorstep Ot PLLC (Brooklyn, 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 Mark Polishchuk'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 Mark Polishchuk was last updated on February 19, 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.