MRS. HOLLY ANN GREINER FNP
NPI 1609313006
Nurse Practitioner - Family in Dansville, NY
About Mrs. Holly Ann Greiner Fnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. HOLLY ANN GREINER FNP (NPI 1609313006) is an individual family provider in Dansville, New York, licensed in New York (341316) and active in the NPI registry since January 2017. She is enrolled in Medicare PECOS, is affiliated with F F Thompson Hospital, and maintains a secondary practice location in Buffalo.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 1
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
Mrs. Holly Ann Greiner Fnp 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
5Medicare enrollment records show Holly Greiner reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Dansville, NY 14437
- Reassigned Medicare billing, New York enrollment
- 275 clinicians in this Medicare group
Hornell, NY 14843
- Reassigned Medicare billing, New York enrollment
- 436 clinicians in this Medicare group
Canandaigua, NY 14424
- Reassigned Medicare billing, New York enrollment
- 347 clinicians in this Medicare group
Rochester, NY 14605
- Reassigned Medicare billing, New York enrollment
- 35 clinicians in this Medicare group
Liverpool, NY 13090
- Reassigned Medicare billing, New York enrollment
- Medicare enrollment name: Wellnow Urgent Care, P.C.
- 511 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 2
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.
F F Thompson Hospital
Acute Care Hospitals · Canandaigua, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14437 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.
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.
DANSVILLE, NY 14437
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 Holly Greiner's NPI number?
The NPI number for Holly Greiner is 1609313006. It was assigned to this individual provider in the NPPES registry on January 23, 2017.
Where is Holly Greiner located?
Holly Greiner practices at 111 Clara Barton St, Dansville, NY 14437. The listed phone number is (585) 335-6001.
What is Holly Greiner's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Holly Greiner enrolled in Medicare?
Yes. Holly Greiner 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 Holly Greiner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Holly Greiner reassigns Medicare benefits to 5 organizations: Nicholas H. Noyes Memorial Hospital (Dansville, NY), St James Hospital (Hornell, NY), The Frederick Ferris Thompson Hospital (Canandaigua, NY), Planned Parenthood Of Central And Western New York, Inc (Rochester, NY) and Wellnow Urgent Care, PC (Liverpool, 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 Holly Greiner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Holly Greiner affiliated with any hospitals?
According to CMS data, Holly Greiner is affiliated with F F Thompson Hospital.
When was this NPI record last updated?
The NPPES record for Holly Greiner was last updated on January 6, 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.
# Mrs. Holly Ann Greiner, FNP · NPI 1609313006
Family physician in Dansville, New York. Individual provider, active in the CMS NPPES registry since January 23, 2017.
## Identity
- **NPI:** 1609313006 (Entity type: Individual)
- **Enumerated:** January 23, 2017
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 341316 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 111 CLARA BARTON ST, Dansville, NY 14437-9503
- **Phone:** (585) 335-6001
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Nicholas H. Noyes Memorial Hospital (NPI 1982625661, Dansville, NY); St James Hospital (NPI 1013985399, Hornell, NY); The Frederick Ferris Thompson Hospital (NPI 1194776351, Canandaigua, NY); Planned Parenthood Of Central And Western New York, Inc (NPI 1306909957, Rochester, NY); Wellnow Urgent Care, PC (NPI 1669825162, Liverpool, NY) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2016
## Record status
- **NPPES last updated:** January 6, 2022
- **Other identifiers:** Medicaid 04669792 (NY)
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Source: [NPI Profile](https://npiprofile.com/npi/1609313006) · Data from the CMS NPPES public registry.