Zachary Mitchell Greenier, PA
NPI 1104160498ActiveIndividual· Physician Assistant· Bangor, ME
Physician Assistant (PA) with St Joseph Hospital, practicing in Bangor, Maine. Their prescriptions cost Medicare Part D more than their services did: $889,363 for 6,058 claims, against $36,170 paid for services in 2024. Lists Northern Light Eastern Maine Medical Center and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1104160498 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | Yes |
| NPI issued | Nov 27, 2012 |
| Last updated in NPPES | Sep 29, 2026 |
| Certified by provider | Sep 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA1375 | ME |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 181 |
|---|---|
| Services billed | 916 across 24 procedure codes |
| Paid by Medicare | $36,170 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,058 · 14,158 30-day fills |
|---|---|
| Patients | 475 |
| Total drug cost | $889,363 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- St Joseph HospitalBangor, ME · 199 clinicians
Hospital affiliations
- Northern Light Eastern Maine Medical CenterBangor, ME
- Northern Light Maine Coast HospitalEllsworth, ME
- Northern Light Mayo HospitalDover Foxcroft, ME
- St Joseph HospitalBangor, ME
Other facilities
- Amedisys Home HealthHome health agency · Bangor, ME
- Centerwell Home HealthHome health agency · Bangor, ME
- St Joseph HomecareHome health agency · Bangor, ME
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 107 physician assistants in Bangor · All physician assistants in Maine