Derek Leinenbach, M.D.
NPI 1538398086 · Internal Medicine Physician · Portland, OR
Enrolled with Medicare as Order and Referring Only - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Derek Leinenbach, M.D. is a Internal Medicine Physician provider in Portland, OR (NPI 1538398086).
Provider details
- NPI number
- 1538398086
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- LL18730 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-07-06
- Last updated
- 2009-07-06
Frequently asked questions
- What is Derek Leinenbach's NPI number?
- Derek Leinenbach's National Provider Identifier (NPI) is 1538398086, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Derek Leinenbach's specialty?
- Derek Leinenbach is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Derek Leinenbach located?
- Derek Leinenbach's practice location on file with NPPES is 9205 Sw Barnes Rd Ste Mt-2800, Portland, OR 97225-6603.
- What is Derek Leinenbach's phone number?
- The practice phone number listed in the NPPES registry for Derek Leinenbach is (503) 216-2621.
- Does Derek Leinenbach accept Medicare?
- Derek Leinenbach is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Derek Leinenbach's NPI active?
- Yes — Derek Leinenbach's NPI (1538398086) is active in the NPPES registry as of the last update on 2009-07-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.