Mary Gaynor, FNP
NPI 1356782742 · Registered Nurse · Buffalo, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Gaynor, FNP is a Registered Nurse provider in Buffalo, NY (NPI 1356782742).
Provider details
- NPI number
- 1356782742
- Entity type
- Individual
- Primary specialty
- Registered NurseNursing Service Providers
- Credential
- FNP
- Sex
- Female
- Sole proprietor
- Yes
- License
- F338183 (NY)
Specialties & taxonomies
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
12 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Clopidogrel Bisulfatebrand: Clopidogrel | 122 | 43 |
| Prasugrel Hcl | 107 | 30 |
| Ticagrelorbrand: Brilinta | 40 | 18 |
| Rosuvastatin Calcium | 27 | 13 |
| Amlodipine Besylate | 18 | — |
| Metoprolol Succinate | 16 | 11 |
| Spironolactone |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$89 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2013-07-12
- Last updated
- 2016-04-07
Frequently asked questions
- What is Mary Gaynor's NPI number?
- Mary Gaynor's National Provider Identifier (NPI) is 1356782742, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gaynor's specialty?
- Mary Gaynor is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).
- Where is Mary Gaynor located?
- Mary Gaynor's practice location on file with NPPES is 100 High St, Buffalo, NY 14203-1126.
- What is Mary Gaynor's phone number?
- The practice phone number listed in the NPPES registry for Mary Gaynor is (716) 859-2401.
- Does Mary Gaynor accept Medicare?
- Mary Gaynor is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Gaynor's NPI active?
- Yes — Mary Gaynor's NPI (1356782742) is active in the NPPES registry as of the last update on 2016-04-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.