Margaret Loewen, ARNP
NPI 1689759490 · Nurse Practitioner · Seattle, WA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Loewen, ARNP is a Nurse Practitioner provider in Seattle, WA (NPI 1689759490).
Provider details
- NPI number
- 1689759490
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- ARNP
- Sex
- Female
- Sole proprietor
- No
- License
- AP30004708 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing 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
- 2006-10-27
- Last updated
- 2022-11-04
- Certified
- 2022-11-03
Frequently asked questions
- What is Margaret Loewen's NPI number?
- Margaret Loewen's National Provider Identifier (NPI) is 1689759490, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Loewen's specialty?
- Margaret Loewen is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Loewen located?
- Margaret Loewen's practice location on file with NPPES is 6804 Greenwood Ave N, Seattle, WA 98103-5228.
- What is Margaret Loewen's phone number?
- The practice phone number listed in the NPPES registry for Margaret Loewen is (605) 322-3455.
- Does Margaret Loewen accept Medicare?
- Margaret Loewen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Loewen's NPI active?
- Yes — Margaret Loewen's NPI (1689759490) is active in the NPPES registry as of the last update on 2022-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.