EWEN J HARRISON MD
NPI 1841647559
Family Medicine in Clackamas, OR
About Ewen J Harrison Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
EWEN J HARRISON MD (NPI 1841647559) is an individual family medicine provider in Clackamas, Oregon, licensed in Oregon (MD193244) and active in the NPI registry since May 2016. He is enrolled in Medicare PECOS, is affiliated with Providence Willamette Falls Medical Center, and maintains a secondary practice location in Milwaukie.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ewen J Harrison Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Ewen Harrison reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Clackamas, OR 97015
- Reassigned Medicare billing, Oregon enrollment
- 1,501 clinicians in this Medicare group
Portland, OR 97213
- Reassigned Medicare billing, Oregon enrollment
- 676 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 5
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence Willamette Falls Medical Center
Acute Care Hospitals · Oregon City, ORProvidence Portland Medical Center
Acute Care Hospitals · Portland, ORProvidence Milwaukie Hospital
Acute Care Hospitals · Milwaukie, ORPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97015 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CLACKAMAS, OR 97015
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ewen Harrison's NPI number?
The NPI number for Ewen Harrison is 1841647559. It was assigned to this individual provider in the NPPES registry on May 23, 2016.
Where is Ewen Harrison located?
Ewen Harrison practices at 9290 SE Sunnybrook Blvd Ste 120, Clackamas, OR 97015. The listed phone number is (503) 215-2110.
What is Ewen Harrison's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Ewen Harrison enrolled in Medicare?
Yes. Ewen Harrison is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Ewen Harrison's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ewen Harrison reassigns Medicare benefits to 2 organizations: Providence Health & Services Oregon (Clackamas, OR) and Providence Health & Services - Oregon (Portland, OR). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ewen Harrison's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ewen Harrison accept?
Health plans from Providence Health Plan list Ewen Harrison as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Ewen Harrison affiliated with any hospitals?
According to CMS data, Ewen Harrison is affiliated with Providence Willamette Falls Medical Center, Providence Portland Medical Center and Providence Milwaukie Hospital.
When was this NPI record last updated?
The NPPES record for Ewen Harrison was last updated on March 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.