Karen Nilsen, MD
NPI 1427063254 · Pediatrics Physician · Tacoma, WA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Nilsen, MD is a Pediatrics Physician provider in Tacoma, WA (NPI 1427063254).
Provider details
- NPI number
- 1427063254
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD00036215 (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
19 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
- 2006-07-30
- Last updated
- 2010-09-10
Frequently asked questions
- What is Karen Nilsen's NPI number?
- Karen Nilsen's National Provider Identifier (NPI) is 1427063254, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Nilsen's specialty?
- Karen Nilsen is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Karen Nilsen located?
- Karen Nilsen's practice location on file with NPPES is 315 Martin Luther King Jr Way, Tacoma, WA 98405-4234.
- What is Karen Nilsen's phone number?
- The practice phone number listed in the NPPES registry for Karen Nilsen is (253) 403-3602.
- Does Karen Nilsen accept Medicare?
- Karen Nilsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Nilsen's NPI active?
- Yes — Karen Nilsen's NPI (1427063254) is active in the NPPES registry as of the last update on 2010-09-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.