Marissa Kathleen Gruenbaum, PA-C
NPI 1811543861ActiveIndividual· Physician Assistant· Gahanna, OH
Physician Assistant (PA-C) with Orthopedic One, Inc., practicing in Gahanna, Ohio. 134 Medicare patients in 2024, $10,477 paid; nearly all of their 207 Part D prescriptions were generic (94%).
Overview
| NPI | 1811543861 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Aug 15, 2019 |
| Last updated in NPPES | Jan 9, 2025 |
| Certified by provider | Jan 9, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 50.005867RX | OH |
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) | Enrolled Practitioner - Physician Assistant (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 134 |
|---|---|
| Services billed | 332 across 42 procedure codes |
| Paid by Medicare | $10,477 |
Part D prescriptions in 2024
| Prescriptions (claims) | 207 · 210 30-day fills |
|---|---|
| Patients | 164 |
| Total drug cost | $8,264 |
| Generic share | 94% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Orthopedic One, Inc.Upper Arlington, OH · 282 clinicians
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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