Ellen Carla Barker-Anderson, APNP
NPI 1558644955ActiveIndividual· Nurse Practitioner, Psych/Mental Health· Portland, OR
Nurse Practitioner, Psych/Mental Health (APNP) with Robert Olsen MD LLC, practicing in Portland, Oregon. Their prescriptions cost Medicare Part D more than their services did: $130,879 for 1,923 claims, against $13,498 paid for services in 2024. Neurocrine Biosciences, Inc. was the largest of 3 companies reporting payments in 2025, $95.30 in all, mostly food and beverage.
Overview
| NPI | 1558644955 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | APNP |
| Sole proprietor | Yes |
| NPI issued | Sep 21, 2011 |
| Last updated in NPPES | Jun 17, 2021 |
| Certified by provider | Jun 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Psych/Mental Health Primary | 363LP0808X | 201601411 | OR |
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 - Nurse Practitioner (OR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 50 |
|---|---|
| Services billed | 180 across 8 procedure codes |
| Paid by Medicare | $13,498 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,923 · 3,153 30-day fills |
|---|---|
| Patients | 137 |
| Total drug cost | $130,879 |
| Generic share | 97% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Robert Olsen MD LLCPortland, OR · 29 clinicians
Industry payments (Open Payments)
- 2025$95.30 · 3 payments from 3 companies
- 2024$93.63 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Neurocrine Biosciences, Inc. | $34.67 | 1 |
| Lundbeck LLC | $30.71 | 1 |
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $29.92 | 1 |
What the 2025 payments were for
- Food and Beverage$95.30 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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