MARGARET J LOEWEN ARNP
NPI 1689759490
Nurse Practitioner in Seattle, WA
About Margaret J Loewen Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET J LOEWEN ARNP (NPI 1689759490) is an individual nurse practitioner in Seattle, Washington, licensed in South Dakota (CP000549) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Margaret J Loewen Arnp is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Margaret Loewen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98103
- Reassigned Medicare billing, Washington enrollment
- 11 clinicians in this Medicare group
Dallas, TX 75244
- Reassigned Medicare billing, Washington enrollment
- 317 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98103 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Margaret Loewen's NPI number?
The NPI number for Margaret Loewen is 1689759490. It was assigned to this individual provider in the NPPES registry on October 27, 2006.
Where is Margaret Loewen located?
Margaret Loewen practices at 6804 Greenwood Ave N, Seattle, WA 98103. The listed phone number is (605) 322-3455.
What is Margaret Loewen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Margaret Loewen enrolled in Medicare?
Yes. Margaret Loewen is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Margaret Loewen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Loewen reassigns Medicare benefits to 2 organizations: Fremont Family Practice LLC (Seattle, WA) and Signify Health Medical Associates, PLLC (Dallas, TX). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaret Loewen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Margaret Loewen accept?
Health plans from Providence Health Plan list Margaret Loewen as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Margaret Loewen was last updated on November 4, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Margaret J Loewen, ARNP · NPI 1689759490
Nurse Practitioner physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since October 27, 2006.
## Identity
- **NPI:** 1689759490 (Entity type: Individual)
- **Enumerated:** October 27, 2006
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** CP000549 (South Dakota)
- **Sole proprietor:** No
## Practice location
- **Address:** 6804 GREENWOOD AVE N, Seattle, WA 98103-5228
- **Phone:** (605) 322-3455 · **Fax:** (605) 322-3456
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Fremont Family Practice LLC (NPI 1871640581, Seattle, WA); Signify Health Medical Associates, PLLC (NPI 1750845863, Dallas, TX) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 4, 2022
- **Other identifiers:** Medicaid 6832197 (SD); Medicaid 9625765 (WA)
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Source: [NPI Profile](https://npiprofile.com/npi/1689759490) · Data from the CMS NPPES public registry.