LYDIA CHEN ARNP
NPI 1316205669
Nurse Practitioner - Gerontology in Seattle, WA
About Lydia Chen Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LYDIA CHEN ARNP (NPI 1316205669) is an individual gerontology provider in Seattle, Washington, licensed in Washington (ARNP.AP.70015412-NP) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS, maintains a secondary practice location in Seattle, and is a graduate of University Of Washington School Of Medicine (2025).
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
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
Lydia Chen 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 Reassignments
2Medicare enrollment records show Lydia Chen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Everett, WA 98203
- Reassigned Medicare billing, Washington enrollment
- 166 clinicians in this Medicare group
Lanham, MD 20706
- Reassigned Medicare billing, Washington enrollment
- 239 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 98109 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 98109
SEATTLE, WA 98109
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 Lydia Chen's NPI number?
The NPI number for Lydia Chen is 1316205669. It was assigned to this individual provider in the NPPES registry on April 24, 2012.
Where is Lydia Chen located?
Lydia Chen practices at 825 Eastlake Ave E, Seattle, WA 98109. The listed phone number is (206) 520-5000.
What is Lydia Chen's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.
Is Lydia Chen enrolled in Medicare?
Yes. Lydia Chen 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 Lydia Chen's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Lydia Chen reassigns Medicare benefits to 2 organizations: Altea Medical Washington PLLC (Everett, WA) and Post Acute Medical PLLC (Lanham, MD). 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 Lydia Chen'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 Lydia Chen was last updated on September 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days 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.
# Lydia Chen, ARNP · NPI 1316205669
Gerontology physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since April 24, 2012.
## Identity
- **NPI:** 1316205669 (Entity type: Individual)
- **Enumerated:** April 24, 2012
- **Primary specialty:** Nurse Practitioner - Gerontology · taxonomy 363LG0600X
- **State license:** ARNP.AP.70015412-NP (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 825 EASTLAKE AVE E, Seattle, WA 98109-4405
- **Phone:** (206) 520-5000
## 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): Altea Medical Washington PLLC (NPI 1609655497, Everett, WA); Post Acute Medical PLLC (NPI 1730713025, Lanham, MD) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Washington School Of Medicine, class of 2025
## Record status
- **NPPES last updated:** September 30, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1316205669) · Data from the CMS NPPES public registry.