Michael Dwyer Grennan
NPI 1669829933ActiveIndividual· Physician Assistant· Gig Harbor, WA
Physician Assistant in Gig Harbor, Washington, licensed in WA, with an NPI issued in May 2016. 313 Medicare patients in 2024, $22,223 paid; nearly all of their 390 Part D prescriptions were generic (91%).
Overview
| NPI | 1669829933 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | May 17, 2016 |
| Last updated in NPPES | Feb 1, 2023 |
| Certified by provider | Feb 1, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA60805134 | WA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 313 |
|---|---|
| Services billed | 733 across 36 procedure codes |
| Paid by Medicare | $22,223 |
Part D prescriptions in 2024
| Prescriptions (claims) | 390 · 391 30-day fills |
|---|---|
| Patients | 246 |
| Total drug cost | $12,428 |
| Generic share | 91% of claims |
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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