Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

South Sound Oncology Services, P.C.

Hematology & Oncology Physician in Renton, WA · enumerated 2015 · authorized official Naixi Chen, President.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1376938506

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Registry record

Entity type Organization (Type 2)

Legal business name South Sound Oncology Services, P.C.

Practice address 1412 Sw 43rd St Ste 200, Renton, WA, 98057

Phone (206) 588-1722

Fax (253) 277-8413

Enumeration date Apr 4, 2015

Last updated in NPPES Dec 22, 2020

Taxonomy & classification

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians Primary

261QX0200X Oncology Clinic/Center Ambulatory Health Care Facilities · License MD00040607 (WA) Secondary

Authorized official

Name Naixi Chen

Title President

Phone (206) 588-1722

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Where is South Sound Oncology Services, P.C. located?

The practice location on file with NPPES is in Renton, WA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2020-12-22. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Naixi Chen Hematology & Oncology Physician · Renton, WA NPI 1265490312

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-22.