Calder Dorn, DO
NPI 1265029854 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Calder Dorn, DO is a Internal Medicine Physician provider in Portland, OR (NPI 1265029854).
Provider details
- NPI number
- 1265029854
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- PG215608 (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 tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 35 | — |
| Atorvastatin Calcium | 31 | 14 |
| Indapamide | 25 | — |
| Levothyroxine Sodium | 20 | — |
| Quetiapine Fumarate | 18 | — |
| Gabapentin | 17 | — |
| Metoprolol Succinate |
Practice location
Mailing address
Additional practice locations (1)
- 200 Mullins DrLebanon, OR 97355-3983Phone: (541) 259-0235
Registry dates
- Enumerated
- 2020-12-29
- Last updated
- 2025-07-23
- Certified
- 2025-07-23
Frequently asked questions
- What is Calder Dorn's NPI number?
- Calder Dorn's National Provider Identifier (NPI) is 1265029854, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Calder Dorn's specialty?
- Calder Dorn is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Calder Dorn located?
- Calder Dorn's practice location on file with NPPES is 9205 Sw Barnes Rd, Portland, OR 97225-6603.
- What is Calder Dorn's phone number?
- The practice phone number listed in the NPPES registry for Calder Dorn is (503) 216-2621.
- Does Calder Dorn accept Medicare?
- Calder Dorn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Calder Dorn's NPI active?
- Yes — Calder Dorn's NPI (1265029854) is active in the NPPES registry as of the last update on 2025-07-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.