MATTHEW WILLIAMS RN
NPI 1740900794
Nurse Practitioner - Family in Seattle, WA
About Matthew Williams Rn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MATTHEW WILLIAMS RN (NPI 1740900794) is an individual family provider in Seattle, Washington, licensed in Washington (AP70012315) and active in the NPI registry since August 2022. He is enrolled in Medicare PECOS, maintains a secondary practice location in Kenmore, and is a graduate of Other (2025).
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 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
Matthew Williams Rn 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 Reassignments
2Medicare enrollment records show Matthew Williams reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Seattle, WA 98101
- Reassigned Medicare billing, Washington enrollment
- 292 clinicians in this Medicare group
Waimanalo, HI 96795
- Reassigned Medicare billing, Hawaii enrollment
- 44 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 98101 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98101
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 Matthew Williams's NPI number?
The NPI number for Matthew Williams is 1740900794. It was assigned to this individual provider in the NPPES registry on August 30, 2022.
Where is Matthew Williams located?
Matthew Williams practices at 1930 Post Aly, Seattle, WA 98101. The listed phone number is (206) 548-5850.
What is Matthew Williams's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Matthew Williams enrolled in Medicare?
Yes. Matthew Williams 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 organizations bill Medicare for Matthew Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Williams reassigns Medicare benefits to 2 organizations: Neighborcare Health (Seattle, WA) and Waimanalo Health Center (Waimanalo, HI). 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 Matthew Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Matthew Williams accept?
Health plans from Ambetter Health and HMSA list Matthew Williams 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 Matthew Williams was last updated on July 1, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Matthew Williams, RN · NPI 1740900794
Family physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since August 30, 2022.
## Identity
- **NPI:** 1740900794 (Entity type: Individual)
- **Enumerated:** August 30, 2022
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** AP70012315 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1930 POST ALY, Seattle, WA 98101-1074
- **Phone:** (206) 548-5850
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Neighborcare Health (NPI 1356371215, Seattle, WA); Waimanalo Health Center (NPI 1780738005, Waimanalo, HI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2025
## Record status
- **NPPES last updated:** July 1, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1740900794) · Data from the CMS NPPES public registry.