MEMORIAL RADIATION ONCOLOGY GROUP
NPI 1235109224
Radiology - Radiation Oncology in New York, NY
About Memorial Radiation Oncology Group NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MEMORIAL RADIATION ONCOLOGY GROUP (NPI 1235109224) is a healthcare organization registered as a radiation oncology in New York, New York and active in the NPI registry since January 2006. The organization lists Charles A Ryke, Manager, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Memorial Radiation Oncology Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
131Medicare enrollment records show 131 clinicians reassign Medicare billing to Memorial Radiation Oncology Group, which bills Medicare for the services they deliver. Of these, 68 practice at this address and 86 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 2
Nearest to this location (20)
See all 131New York, NY 10065
New York, NY 10021
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 Memorial Radiation Oncology Group's NPI number?
The NPI number for Memorial Radiation Oncology Group is 1235109224. It was assigned to this organization in the NPPES registry on January 24, 2006.
Where is Memorial Radiation Oncology Group located?
Memorial Radiation Oncology Group is located at 1275 York Ave, New York, NY 10021. The listed phone number is (646) 227-3813.
What is Memorial Radiation Oncology Group's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Radiation Oncology, with taxonomy code 2085R0001X.
Is Memorial Radiation Oncology Group enrolled in Medicare?
Yes. Memorial Radiation Oncology Group is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Memorial Radiation Oncology Group?
According to the CMS Revalidation Reassignment List (October 2026 release), 131 clinicians in 2 Medicare specialties reassign their Medicare billing to Memorial Radiation Oncology Group. A 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 the clinician's services. The largest specialties are Radiation Oncology (91) and Nurse Practitioner (40). Of these, 68 practice at this address and 86 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Memorial Radiation Oncology Group was last updated on August 22, 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.
# Memorial Radiation Oncology Group · NPI 1235109224
Radiation Oncology organization in New York, New York. Organization record, active in the CMS NPPES registry since January 24, 2006.
## Identity
- **NPI:** 1235109224 (Entity type: Organization)
- **Enumerated:** January 24, 2006
- **Primary specialty:** Radiology - Radiation Oncology · taxonomy 2085R0001X
- **Organization subpart:** No
- **Authorized official:** Charles Ryke, MANAGER
## Practice location
- **Address:** 1275 YORK AVE, New York, NY 10021-6007
- **Phone:** (646) 227-3813
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 131 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Radiation Oncology (91), Nurse Practitioner (40); 68 practice at this address and 86 within 10 miles; [full list](https://npiprofile.com/npi/1235109224/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 22, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1235109224) · Data from the CMS NPPES public registry.