ELIZABETH GREIS N.P.
NPI 1508109315
Nurse Practitioner - Psychiatric/Mental Health in Buffalo, NY
About Elizabeth Greis N.p. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ELIZABETH GREIS N.P. (NPI 1508109315) is an individual psychiatric/mental health provider in Buffalo, New York, licensed in New York (40 401579) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS and is a graduate of State University Of New York At Buffalo School Of Medicine (2013).
NPPES Registry Identity
Specialties & Licenses
Other Names 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
Elizabeth Greis N.p. 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 Elizabeth Greis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Getzville, NY 14068
- Reassigned Medicare billing, New York enrollment
- 170 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 14215 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BUFFALO, NY 14215
BUFFALO, NY 14215
BUFFALO, NY 14215
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 Elizabeth Greis's NPI number?
The NPI number for Elizabeth Greis is 1508109315. It was assigned to this individual provider in the NPPES registry on March 29, 2013. The provider is also known as Elizabeth Ostrom.
Where is Elizabeth Greis located?
Elizabeth Greis practices at 3020 Bailey Ave 2nd Floor, Buffalo, NY 14215. The listed phone number is (716) 831-1800.
What is Elizabeth Greis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Elizabeth Greis enrolled in Medicare?
Yes. Elizabeth Greis 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 Elizabeth Greis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Greis reassigns Medicare benefits to Horizon Health Services Inc (Getzville, 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 Elizabeth Greis'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 Elizabeth Greis was last updated on August 6, 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.
# Elizabeth Greis, N.P. · NPI 1508109315
Psychiatric/Mental Health physician in Buffalo, New York. Individual provider, active in the CMS NPPES registry since March 29, 2013.
## Identity
- **NPI:** 1508109315 (Entity type: Individual)
- **Enumerated:** March 29, 2013
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 40 401579 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 3020 BAILEY AVE, 2ND FLOOR, Buffalo, NY 14215-2814
- **Phone:** (716) 831-1800
## 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:** Horizon Health Services Inc (NPI 1043387152, Getzville, NY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Buffalo School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** August 6, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1508109315) · Data from the CMS NPPES public registry.