MS. MARY DONOVAN GRECO NP
NPI 1124246665
Nurse Practitioner - Family in West Harrison, NY
About Ms. Mary Donovan Greco Np NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY DONOVAN GRECO NP (NPI 1124246665) is an individual family provider in West Harrison, New York, licensed in New York (333827) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2002).
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
Ms. Mary Donovan Greco Np 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 Reassignments
2Medicare enrollment records show Mary Donovan Greco reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
West Harrison, NY 10604
- Reassigned Medicare billing, New York enrollment
- 328 clinicians in this Medicare group
Great Neck, NY 11021
- Reassigned Medicare billing, New York enrollment
- 9,353 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10604 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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 Mary Donovan Greco's NPI number?
The NPI number for Mary Donovan Greco is 1124246665. It was assigned to this individual provider in the NPPES registry on April 22, 2007.
Where is Mary Donovan Greco located?
Mary Donovan Greco practices at Memorial Sloan Kettering Cancer Center 500 Westchester Ave, West Harrison, NY 10604. The listed phone number is (914) 367-7000.
What is Mary Donovan Greco's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary Donovan Greco enrolled in Medicare?
Yes. Mary Donovan Greco 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 organizations bill Medicare for Mary Donovan Greco's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Donovan Greco reassigns Medicare benefits to 2 organizations: Msk Harrison (West Harrison, NY) and North Shore-Lij Medical PC (Great Neck, NY). Each 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 Mary Donovan Greco'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 Mary Donovan Greco was last updated on July 16, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Ms. Mary Donovan Greco, NP · NPI 1124246665
Family physician in West Harrison, New York. Individual provider, active in the CMS NPPES registry since April 22, 2007.
## Identity
- **NPI:** 1124246665 (Entity type: Individual)
- **Enumerated:** April 22, 2007
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 333827 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** MEMORIAL SLOAN KETTERING CANCER CENTER, 500 WESTCHESTER AVE, West Harrison, NY 10604
- **Phone:** (914) 367-7000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Msk Harrison (NPI 1174923593, West Harrison, NY); North Shore-Lij Medical PC (NPI 1053688572, Great Neck, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2002
## Record status
- **NPPES last updated:** July 16, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1124246665) · Data from the CMS NPPES public registry.