Sagen Castellanos Olson, PA-C
NPI 1376884304ActiveIndividual· Physician Assistant, Medical· Eugene, OR
Physician Assistant, Medical (PA-C) with Oncology Associates of Oregon P C, practicing in Eugene, Oregon. Their prescriptions cost Medicare Part D more than their services did: $4,038,164 for 1,549 claims, against $22,760 paid for services in 2024. Abbvie Inc. was the largest of 2 companies reporting payments in 2025, $245.02 in all, mostly food and beverage. Lists Bay Area Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1376884304 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Mar 15, 2013 |
| Last updated in NPPES | Sep 28, 2021 |
| Certified by provider | Sep 28, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 169708 | OR |
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 (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 199 |
|---|---|
| Services billed | 356 across 6 procedure codes |
| Paid by Medicare | $22,760 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,549 · 2,196 30-day fills |
|---|---|
| Patients | 453 |
| Total drug cost | $4,038,164 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2014 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Oncology Associates of Oregon P CEugene, OR · 48 clinicians
Hospital affiliations
- Bay Area HospitalCoos Bay, OR
- Sacred Heart Medical Center - RiverbendSpringfield, OR
Industry payments (Open Payments)
- 2025$245.02 · 3 payments from 2 companies
- 2024$280.01 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $129.00 | 1 |
| Tempus Ai, Inc | $116.02 | 2 |
What the 2025 payments were for
- Food and Beverage$245.02 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 physician assistants in Eugene · All physician assistants in Oregon