Gwendolyn Derk
NPI 1811639404 · Student in an Organized Health Care Education/Training Program · Portland, OR
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwendolyn Derk is a Student in an Organized Health Care Education/Training Program provider in Portland, OR (NPI 1811639404).
Provider details
- NPI number
- 1811639404
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% 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.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 52 | 14 |
| Losartan Potassium | 42 | — |
| Omeprazole | 41 | 13 |
| Apixabanbrand: Eliquis | 30 | — |
| Amlodipine Besylate | 27 | — |
| Gabapentin | 27 | — |
| Levothyroxine Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-04-13
- Last updated
- 2022-04-13
- Certified
- 2022-04-13
Frequently asked questions
- What is Gwendolyn Derk's NPI number?
- Gwendolyn Derk's National Provider Identifier (NPI) is 1811639404, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwendolyn Derk's specialty?
- Gwendolyn Derk is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Gwendolyn Derk located?
- Gwendolyn Derk's practice location on file with NPPES is 3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3098.
- What is Gwendolyn Derk's phone number?
- The practice phone number listed in the NPPES registry for Gwendolyn Derk is (503) 681-1700.
- Does Gwendolyn Derk accept Medicare?
- Gwendolyn Derk is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwendolyn Derk's NPI active?
- Yes — Gwendolyn Derk's NPI (1811639404) is active in the NPPES registry as of the last update on 2022-04-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.