MSK HARRISON
NPI 1174923593
Internal Medicine - Medical Oncology in West Harrison, NY
About Msk Harrison NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MSK HARRISON (NPI 1174923593) is a healthcare organization registered as a medical oncology in West Harrison, New York and active in the NPI registry since September 2014. The organization lists Salvatore M Andreozzi, Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 6
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)
Msk Harrison is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
327Medicare enrollment records show 327 clinicians reassign Medicare billing to Msk Harrison, which bills Medicare for the services they deliver. Of these, 21 practice at this address and 30 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 37
Nearest to this location (20)
See all 327West Harrison, NY 10604
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 Msk Harrison's NPI number?
The NPI number for Msk Harrison is 1174923593. It was assigned to this organization in the NPPES registry on September 4, 2014.
Where is Msk Harrison located?
Msk Harrison is located at 500 Westchester Ave, West Harrison, NY 10604. The listed phone number is (212) 639-2000.
What is Msk Harrison's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.
Is Msk Harrison enrolled in Medicare?
Yes. Msk Harrison is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Msk Harrison?
According to the CMS Revalidation Reassignment List (October 2026 release), 327 clinicians in 37 Medicare specialties reassign their Medicare billing to Msk Harrison. 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 Nurse Practitioner (129), Medical Oncology (45) and Hematology/Oncology (19). Of these, 21 practice at this address and 30 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 Msk Harrison was last updated on September 4, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# Msk Harrison · NPI 1174923593
Medical Oncology organization in West Harrison, New York. Organization record, active in the CMS NPPES registry since September 4, 2014.
## Identity
- **NPI:** 1174923593 (Entity type: Organization)
- **Enumerated:** September 4, 2014
- **Primary specialty:** Internal Medicine - Medical Oncology · taxonomy 207RX0202X
- **Organization subpart:** No
- **Authorized official:** Salvatore Andreozzi, DIRECTOR
## Practice location
- **Address:** 500 WESTCHESTER AVE, West Harrison, NY 10604-3200
- **Phone:** (212) 639-2000
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 327 clinicians in 37 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nurse Practitioner (129), Medical Oncology (45), Hematology/Oncology (19); 21 practice at this address and 30 within 10 miles; [full list](https://npiprofile.com/npi/1174923593/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 4, 2014
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Source: [NPI Profile](https://npiprofile.com/npi/1174923593) · Data from the CMS NPPES public registry.