Kelsey Lynn Gretzinger, PA-C
NPI 1619445715ActiveIndividual· Physician Assistant· Tualatin, OR
Physician Assistant (PA-C) with Robert L Tatsumi MD PC, practicing in Tualatin, Oregon. 168 Medicare patients in 2024, $17,707 paid; all of their 307 Part D prescriptions were generic. Vertex Pharmaceuticals Incorporated was the largest of 3 companies reporting payments in 2025, $91.87 in all, mostly food and beverage. Lists Legacy Meridian Park Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1619445715 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Nov 6, 2018 |
| Last updated in NPPES | Dec 12, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 168 |
|---|---|
| Services billed | 251 across 24 procedure codes |
| Paid by Medicare | $17,707 |
Part D prescriptions in 2024
| Prescriptions (claims) | 307 · 319 30-day fills |
|---|---|
| Patients | 147 |
| Total drug cost | $2,755 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Robert L Tatsumi MD PCTualatin, OR · 3 clinicians
Hospital affiliations
- Legacy Meridian Park Medical CenterTualatin, OR
- Legacy Silverton Medical CenterSilverton, OR
- Providence Willamette Falls Medical CenterOregon City, OR
Industry payments (Open Payments)
- 2025$91.87 · 4 payments from 3 companies
- 2024$177.90 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $48.90 | 2 |
| Biotronik Nro, Inc. | $22.28 | 1 |
| Left Coast Surgical Inc | $20.69 | 1 |
What the 2025 payments were for
- Food and Beverage$91.87 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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