Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Ellen Carla Barker-Anderson, APNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1558644955

Ellen Carla Barker-Anderson, APNP is a Nurse Practitioner in Portland, Oregon. Qualified in 2011, 15 years ago. Practices with Robert Olsen MD LLC, a 27-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Oregon.

Years since qualifying
15
Licensed in
OR
In the registry since
2011
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Practice location Address checks out

833 SW 11th Ave Ste 245
Portland, OR 97205-2132
Phone: (503) 442-6105
Fax: (503) 234-7166
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 201601411 (OR)

Record details

NPI number1558644955
Entity typeIndividual (Type 1)
GenderFemale
Credentials APNP
Sole proprietorYes
NPI enumeratedSeptember 21, 2011
Last updated in NPPESJune 17, 2021
Certification dateJune 17, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2011 (15 years in practice)
Group practice Robert Olsen Md Llc — 27 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients50
Services billed 180 a service is one billed item, such as a visit, a test or a procedure
Average patient age64

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $95 3 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Colleagues at Robert Olsen MD LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 27 clinicians in the practice; 12 are shown here.

Other providers in Portland