Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

LYDIA CHEN ARNP
NPI 1316205669
Nurse Practitioner - Gerontology in Seattle, WA

Active since April 24, 2012PECOS Enrolled
825 EASTLAKE AVE E, SEATTLE, WA 98109(206) 520-5000 Get Directions Write a Review

NPPES record last updated: September 30, 2026. Verified against the NPPES registry weekly; last sync: October 04, 2026.

Record update history: Sep 30, 2026, Oct 8, 2025, Aug 4, 2024 (3 updates tracked since 2024).

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

NPI1316205669
Entity TypeIndividualFemale
Primary Taxonomy363LG0600X
Provider Legal NameLYDIA CHENCredential: ARNP
Location Address825 EASTLAKE AVE ESeattle, WA 98109-4405
Mailing AddressPo Box 50095Seattle, WA 98145-5095
Sole ProprietorNo
Medical School CMSUniversity Of Washington School Of MedicineGraduated 2025
Enumeration DateApril 24, 2012
Last NPPES UpdateSeptember 30, 20263 updates tracked since enumeration
NPPES CertifiedSeptember 30, 2026
✔ NPI 1316205669 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · GerontologyPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LG0600X
License✔ Licensed in WA · ARNP.AP.70015412-NP
Also ListedNurse PractitionerTaxonomy 363L00000X · License ARNP.AP.70015412-NP (WA)
Also ListedNurse Practitioner · Acute CareTaxonomy 363LA2100X · License ARNP.AP.70015412-NP (WA)
825 EASTLAKE AVE E, Seattle, WA 98109

Secondary Practice Location 1

Location 11959 NE Pacific StSeattle, WA 98195-8908 · Phone (206) 598-3300

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

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.

PECOS PAC ID9537436670
PECOS Enrollment IDI20250930003498
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

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.

New Patient
$97.43 typical visit price
range $63.67 – $189.37
Typical copayment $24.35 (range $15.91 – $47.34)
Most-billed visit code 99203
Established Patient
$111.00 typical visit price
range $21.12 – $155.00
Typical copayment $27.75 (range $5.28 – $38.75)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

Internal Medicine (Hematology)
825 EASTLAKE AVE E
SEATTLE, WA 98109
Pathology (Anatomic Pathology & Clinical Pathology)
825 EASTLAKE AVE E
SEATTLE, WA 98109
Nurse Practitioner (Pediatrics)
825 EASTLAKE AVE E
SEATTLE, WA 98109
Internal Medicine (Medical Oncology)
825 EASTLAKE AVE E
SEATTLE, WA 98109
Physician Assistant
825 EASTLAKE AVE E
SEATTLE, WA 98109
Surgery
825 EASTLAKE AVE E
SEATTLE, WA 98109
Physician Assistant
825 EASTLAKE AVE E
SEATTLE, WA 98109
Nurse Practitioner (Women's Health)
825 EASTLAKE AVE E
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.

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 6 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.