Michael O'Hagan, P.A.
NPI 1346579448 · Medical Physician Assistant · Watertown, NY
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Michael O'Hagan, P.A. is a Medical Physician Assistant provider in Watertown, NY (NPI 1346579448).
Provider details
- NPI number
- 1346579448
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A.
- Sex
- Male
- Sole proprietor
- No
- License
- 013717 (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 tenure33% of score
16 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 · 71 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 107 | 30 |
| Omeprazole | 87 | 26 |
| Tramadol Hcl | 68 | 15 |
| Levothyroxine Sodium | 66 | 21 |
| Duloxetine Hcl | 64 | 11 |
| Potassium Chloride | 59 | 14 |
| Amlodipine Besylate | 56 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$774 across 43 records (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
- 2009-12-18
- Last updated
- 2025-12-15
- Certified
- 2025-12-15
Frequently asked questions
- What is Michael O'Hagan's NPI number?
- Michael O'Hagan's National Provider Identifier (NPI) is 1346579448, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Michael O'Hagan's specialty?
- Michael O'Hagan is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Michael O'Hagan located?
- Michael O'Hagan's practice location on file with NPPES is 20053 Summit View Blvd Ste 1, Watertown, NY 13601-2170.
- What is Michael O'Hagan's phone number?
- The practice phone number listed in the NPPES registry for Michael O'Hagan is (315) 755-2560.
- Does Michael O'Hagan accept Medicare?
- Michael O'Hagan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Michael O'Hagan's NPI active?
- Yes — Michael O'Hagan's NPI (1346579448) is active in the NPPES registry as of the last update on 2025-12-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.