SYDNEY LEIGH MILLER
NPI 1275055428
Social Worker - Clinical in Seattle, WA
About Sydney Leigh Miller NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SYDNEY LEIGH MILLER (NPI 1275055428) is an individual clinical provider in Seattle, Washington, licensed in Washington (SC60756770) and active in the NPI registry since July 2017. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Sydney Leigh Miller is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Sydney Miller reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Tukwila, WA 98188
- Reassigned Medicare billing, Washington enrollment
- 103 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 98122 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 98122
SEATTLE, WA 98122
SEATTLE, WA 98122
SEATTLE, WA 98122
SEATTLE, WA 98122
SEATTLE, WA 98122
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 Sydney Miller's NPI number?
The NPI number for Sydney Miller is 1275055428. It was assigned to this individual provider in the NPPES registry on July 10, 2017.
Where is Sydney Miller located?
Sydney Miller practices at 1600 E Olive St, Seattle, WA 98122. The listed phone number is (206) 302-2200.
What is Sydney Miller's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Sydney Miller enrolled in Medicare?
Yes. Sydney Miller is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Sydney Miller's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sydney Miller reassigns Medicare benefits to Sound (Tukwila, 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 Sydney Miller's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Sydney Miller was last updated on July 21, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Sydney Leigh Miller · NPI 1275055428
Clinical provider in Seattle, Washington. Individual provider, active in the CMS NPPES registry since July 10, 2017.
## Identity
- **NPI:** 1275055428 (Entity type: Individual)
- **Enumerated:** July 10, 2017
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** SC60756770 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 1600 E OLIVE ST, Seattle, WA 98122-2735
- **Phone:** (206) 302-2200 · **Fax:** (206) 302-2210
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Sound (NPI 1780774950, Tukwila, WA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 21, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1275055428) · Data from the CMS NPPES public registry.