Mariah Greiner, FNP
Family Nurse Practitioner · Buffalo, NY
Mariah Greiner, FNP is a family nurse practitioner with a practice address in Buffalo, New York, and NPI 1619347010, issued on Sep 29, 2015. Check the license (New York F339466-1, as entered in NPPES) with the New York board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariah Greiner
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- F339466-1 NY
Self-reported in NPPES; status is on the state search - Practice location
- 219 Bryant St, Buffalo, NY 14222
- Phone
- (716) 878-1689
- Enumerated
- Sep 29, 2015
- Record last updated
- Sep 29, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (716) 878-1862
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 14,805 in New York → Look up another NPI →
Also registered at 219 Bryant St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Aseel Abu-DayyaStudent in an Organized Health Care Education/Training Program1932588951
- Michael Adragna, MDAnesthesiology Physician1275505463
- Priscilla AguirreCertified Registered Nurse Anesthetist1164953956
- Shorouk AlwahshStudent in an Organized Health Care Education/Training Program1073893707
- Kofi Amankwah, M.D.Maternal & Fetal Medicine Physician1235110230
- Georgia Androutsopoulou, M.D.Student in an Organized Health Care Education/Training Program1518207687
Verify Mariah Greiner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich New York board licenses this profession
Search for license F339466-1Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average family nurse practitioner in 2024
140 Medicare Part D claims for 40 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Telmisartan14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Mariah Greiner among 14,805 family nurse practitioner records in New York
Mariah Greiner, FNP is one of 14,805 family nurse practitioner records with a practice address in New York. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 33% of them.
- NPI issued2015 · 33% of these records are older, 63% newer
- In a Medicare fileYes · 68% of these records are
- In the CMS Doctors and Clinicians fileNo · 49% of these records are
- Record last updated2015 · 45% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
391 family nurse practitioner records list a practice address in Buffalo
They are 391 of the 13,287 NPPES records with a practice address in Buffalo, and 14,805 family nurse practitioner records in New York.
All 14,805 in New York → Every provider in Buffalo → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Linda Bush, CFNPBuffalo, NY 142221801852512
- Rebecca Clausen, MS, FNPBuffalo, NY 142221063735777
- Margaret Corcoran, FNPBuffalo, NY 142221578737482
- Kathleen Courtney, C.F.N.P.Buffalo, NY 142221912992116
- Nancy Crown, FNPBuffalo, NY 142221497876874
- Roxanne FleuryBuffalo, NY 142221114126455
- Rene KrollBuffalo, NY 142221316083207
- Julie Mondanaro, F.N.P.Buffalo, NY 142221558356139
Common questions
What is Mariah Greiner, FNP's NPI number?
Mariah Greiner, FNP's National Provider Identifier (NPI) is 1619347010, issued on Sep 29, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Greiner, FNP located?
The NPPES record lists a practice address at 219 Bryant St, Buffalo, NY, 14222. Phone: (716) 878-1689. Providers update this record themselves, so call before visiting.
How can I verify Mariah Greiner, FNP's license?
NPPES lists New York license number F339466-1, as entered by the provider. Search the New York board that licenses this profession; the NPPES record confirms identity only.
How much does Mariah Greiner, FNP prescribe under Medicare Part D?
In 2024, Mariah Greiner, FNP had 140 Medicare Part D claims for 40 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.