Ewen Harrison, MD
NPI 1841647559 · Family Medicine Physician · Clackamas, OR
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ewen Harrison, MD is a Family Medicine Physician provider in Clackamas, OR (NPI 1841647559).
Provider details
- NPI number
- 1841647559
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- PG187071 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
249 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 138 | $85 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 39 | $101 |
| Hemoglobin A1c Level83036 | 36 | $9 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 22 | $59 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 14 | $153 |
Typical Medicare-allowed amounts for these services range $9–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 66 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 325 | 102 |
| Losartan Potassium | 217 | 63 |
| Lisinopril | 189 | 56 |
| Levothyroxine Sodium | 170 | 48 |
| Amlodipine Besylate | 162 | 54 |
| Metoprolol Succinate | 124 | 35 |
| Trazodone Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 10330 Se 32nd AveSte 250Milwaukie, OR 97222-6587Phone: (503) 513-8950
Registry dates
- Enumerated
- 2016-05-23
- Last updated
- 2021-03-11
- Certified
- 2021-03-11
Frequently asked questions
- What is Ewen Harrison's NPI number?
- Ewen Harrison's National Provider Identifier (NPI) is 1841647559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ewen Harrison's specialty?
- Ewen Harrison is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Ewen Harrison located?
- Ewen Harrison's practice location on file with NPPES is 9290 Se Sunnybrook Blvd Ste 120, Clackamas, OR 97015-6802.
- What is Ewen Harrison's phone number?
- The practice phone number listed in the NPPES registry for Ewen Harrison is (503) 215-2110.
- Does Ewen Harrison accept Medicare?
- Ewen Harrison is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ewen Harrison's NPI active?
- Yes — Ewen Harrison's NPI (1841647559) is active in the NPPES registry as of the last update on 2021-03-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.