Karin Nelson, MD
NPI 1013977826 · Internal Medicine Physician · Seattle, WA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karin Nelson, MD is a Internal Medicine Physician provider in Seattle, WA (NPI 1013977826).
Provider details
- NPI number
- 1013977826
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00040333 (WA)
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
20 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
- 2006-03-24
- Last updated
- 2007-10-17
Frequently asked questions
- What is Karin Nelson's NPI number?
- Karin Nelson's National Provider Identifier (NPI) is 1013977826, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karin Nelson's specialty?
- Karin Nelson is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Karin Nelson located?
- Karin Nelson's practice location on file with NPPES is 1660 South Columbian Way, Seattle, WA 98108-1597.
- What is Karin Nelson's phone number?
- The practice phone number listed in the NPPES registry for Karin Nelson is (206) 277-4200.
- Does Karin Nelson accept Medicare?
- Karin Nelson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karin Nelson's NPI active?
- Yes — Karin Nelson's NPI (1013977826) is active in the NPPES registry as of the last update on 2007-10-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.