Ellen Mortensen, MSW
NPI 1598818726 · Social Worker · Shoreline, WA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Mortensen, MSW is a Social Worker provider in Shoreline, WA (NPI 1598818726).
Provider details
- NPI number
- 1598818726
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- LW00004069 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
- 2007-01-19
- Last updated
- 2020-04-29
- Certified
- 2020-04-29
Frequently asked questions
- What is Ellen Mortensen's NPI number?
- Ellen Mortensen's National Provider Identifier (NPI) is 1598818726, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Mortensen's specialty?
- Ellen Mortensen is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Ellen Mortensen located?
- Ellen Mortensen's practice location on file with NPPES is 16376 28th Pl Ne, Shoreline, WA 98155-6417.
- What is Ellen Mortensen's phone number?
- The practice phone number listed in the NPPES registry for Ellen Mortensen is (206) 459-3556.
- Does Ellen Mortensen accept Medicare?
- Ellen Mortensen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Mortensen's NPI active?
- Yes — Ellen Mortensen's NPI (1598818726) is active in the NPPES registry as of the last update on 2020-04-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.