Sean Guinnane, PMHNP
NPI 1346997137 · Psychiatric/Mental Health Nurse Practitioner · Buffalo, NY
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean Guinnane, PMHNP is a Psychiatric/Mental Health Nurse Practitioner provider in Buffalo, NY (NPI 1346997137).
Provider details
- NPI number
- 1346997137
- Entity type
- Individual
- Primary specialty
- Psychiatric/Mental Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PMHNP
- Sex
- Male
- Sole proprietor
- Yes
- License
- 403981 (NY)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 32 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Olanzapine | 70 | 12 |
| Divalproex Sodiumbrand: Divalproex Sodium Er | 61 | — |
| Fluoxetine Hcl | 59 | — |
| Trazodone Hcl | 43 | — |
| Risperidone | 42 | — |
| Paliperidone Palmitatebrand: Invega Sustenna | 42 | — |
| Benztropine Mesylate | 40 | — |
Practice location
Mailing address
Additional practice locations (1)
- 100 N Village Ave Ste 27Rockville Centre, NY 11570-3712Phone: (929) 266-7360
Registry dates
- Enumerated
- 2022-03-02
- Last updated
- 2022-06-17
- Certified
- 2022-06-17
Frequently asked questions
- What is Sean Guinnane's NPI number?
- Sean Guinnane's National Provider Identifier (NPI) is 1346997137, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sean Guinnane's specialty?
- Sean Guinnane is listed in the NPPES registry with a primary specialty of Psychiatric/Mental Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Sean Guinnane located?
- Sean Guinnane's practice location on file with NPPES is 1050 Niagara St, Buffalo, NY 14213-2001.
- What is Sean Guinnane's phone number?
- The practice phone number listed in the NPPES registry for Sean Guinnane is (716) 856-2587.
- Does Sean Guinnane accept Medicare?
- Sean Guinnane is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sean Guinnane's NPI active?
- Yes — Sean Guinnane's NPI (1346997137) is active in the NPPES registry as of the last update on 2022-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.