Katharine M. Mason-Ellis, PA-C
NPI 1174047393ActiveIndividual· Physician Assistant· Clackamas, OR
Physician Assistant (PA-C) with Portland Adventist Medical Center, practicing in Clackamas, Oregon. Their prescriptions cost Medicare Part D more than their services did: $531,680 for 1,838 claims, against $47,398 paid for services in 2024. Celltrion, Inc. reported $300.00 in payments in 2025, mostly gifts. Lists Adventist Health Portland and 1 other hospital as hospital affiliations.
Overview
| NPI | 1174047393 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jul 30, 2017 |
| Last updated in NPPES | Apr 28, 2025 |
| Certified by provider | Apr 28, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | PA202574 | OR |
| Physician Assistant | 363A00000X | PA60779453 | 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) | Enrolled Practitioner - Physician Assistant (OR); Practitioner - Physician Assistant (WA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 410 |
|---|---|
| Services billed | 839 across 13 procedure codes |
| Paid by Medicare | $47,398 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,838 · 4,530 30-day fills |
|---|---|
| Patients | 470 |
| Total drug cost | $531,680 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Portland Adventist Medical CenterPortland, OR · 271 clinicians
Hospital affiliations
- Adventist Health PortlandPortland, OR
- Ohsu Hospital and ClinicsPortland, OR
Industry payments (Open Payments)
- 2025$300.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Celltrion, Inc. | $300.00 | 1 |
What the 2025 payments were for
- Gift$300.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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