RACHEL SASINOWSKI HERRMANN ARNP
NPI 1841838422
Nurse Practitioner - Family in Seattle, WA
About Rachel Sasinowski Herrmann Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RACHEL SASINOWSKI HERRMANN ARNP (NPI 1841838422) is an individual family provider in Seattle, Washington, licensed in Washington (AP60986231) and active in the NPI registry since December 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Rachel Sasinowski Herrmann Arnp is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Rachel Herrmann reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Seattle, WA 98104
- Reassigned Medicare billing, Washington enrollment
- Medicare enrollment name: Womens Healthcare Alliance PLLC
- 16 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 98104 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 16
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98104
SEATTLE, WA 98104
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 Rachel Herrmann's NPI number?
The NPI number for Rachel Herrmann is 1841838422. It was assigned to this individual provider in the NPPES registry on December 14, 2019. The provider is also known as Rachel Alexandra Sasinowski.
Where is Rachel Herrmann located?
Rachel Herrmann practices at 1101 Madison St Ste 1150, Seattle, WA 98104. The listed phone number is (206) 386-3400.
What is Rachel Herrmann's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Rachel Herrmann enrolled in Medicare?
Yes. Rachel Herrmann is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Rachel Herrmann's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rachel Herrmann reassigns Medicare benefits to Women's Healthcare Alliance PLLC (Seattle, WA). The 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 Rachel Herrmann's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rachel Herrmann accept?
Health plans from Ambetter Health and Premera Blue Cross Blue Shield of Alaska list Rachel Herrmann 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 Rachel Herrmann was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.
# Rachel Sasinowski Herrmann, ARNP · NPI 1841838422
Family physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since December 14, 2019.
## Identity
- **NPI:** 1841838422 (Entity type: Individual)
- **Enumerated:** December 14, 2019
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** AP60986231 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1101 MADISON ST STE 1150, Seattle, WA 98104-3558
- **Phone:** (206) 386-3400
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Women's Healthcare Alliance PLLC (NPI 1821409111, Seattle, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** February 12, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1841838422) · Data from the CMS NPPES public registry.