DR. REUVEN Z GROSSMAN MD
NPI 1841457959
Radiology - Radiation Oncology in Bronx, NY
About Dr. Reuven Z Grossman Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. REUVEN Z GROSSMAN MD (NPI 1841457959) is an individual radiation oncology provider in Bronx, New York, licensed in New York (239248) and active in the NPI registry since May 2008. He is enrolled in Medicare PECOS, is affiliated with Jacobi Medical Center, and is a graduate of University Of Maryland School Of Medicine (2004).
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
Dr. Reuven Z Grossman 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 Reuven Grossman reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Port Jefferson Station, NY 11776
- Reassigned Medicare billing, New York enrollment
- 636 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 11
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.
Jacobi Medical Center
Acute Care Hospitals · Bronx, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10469 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 15
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BRONX, NY 10469
BRONX, NY 10469
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 Reuven Grossman's NPI number?
The NPI number for Reuven Grossman is 1841457959. It was assigned to this individual provider in the NPPES registry on May 19, 2008.
Where is Reuven Grossman located?
Reuven Grossman practices at 2330 Eastchester Rd, Bronx, NY 10469. The listed phone number is (718) 732-4000.
What is Reuven Grossman's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Reuven Grossman enrolled in Medicare?
Yes. Reuven Grossman 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 Reuven Grossman's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Reuven Grossman reassigns Medicare benefits to North Shore Hematology Oncology Associates PC (Port Jefferson Station, 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 Reuven Grossman's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Reuven Grossman affiliated with any hospitals?
According to CMS data, Reuven Grossman is affiliated with Jacobi Medical Center.
When was this NPI record last updated?
The NPPES record for Reuven Grossman was last updated on January 17, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.