SOUTH SOUND ONCOLOGY SERVICES, P.C.
NPI 1376938506
Internal Medicine - Hematology & Oncology in Renton, WA
About South Sound Oncology Services, P.c. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SOUTH SOUND ONCOLOGY SERVICES, P.C. (NPI 1376938506) is a healthcare organization registered as a hematology & oncology in Renton, Washington and active in the NPI registry since April 2015. The organization lists Naixi Nick Chen, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
South Sound Oncology Services, P.c. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by February 28, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to South Sound Oncology Services, P.C., which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 South Sound Oncology Services, P.C.'s NPI number?
The NPI number for South Sound Oncology Services, P.C. is 1376938506. It was assigned to this organization in the NPPES registry on April 4, 2015.
Where is South Sound Oncology Services, P.C. located?
South Sound Oncology Services, P.C. is located at 1412 SW 43rd St Ste 200, Renton, WA 98057. The listed phone number is (206) 588-1722.
What is South Sound Oncology Services, P.C.'s specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is South Sound Oncology Services, P.C. enrolled in Medicare?
Yes. South Sound Oncology Services, P.C. is registered in the Medicare PECOS enrollment system.
When is South Sound Oncology Services, P.C.'s Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (Washington, Physician - Hematology/Oncology) is due for revalidation by February 28, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through South Sound Oncology Services, P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to South Sound Oncology Services, P.C., in Hematology/Oncology and Nurse Practitioner. A 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 the clinician's services. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does South Sound Oncology Services, P.C. accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 31 other insurers list South Sound Oncology Services, P.C. 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 South Sound Oncology Services, P.C. was last updated on December 22, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# South Sound Oncology Services, P.c. · NPI 1376938506
Hematology & Oncology organization in Renton, Washington. Organization record, active in the CMS NPPES registry since April 4, 2015.
## Identity
- **NPI:** 1376938506 (Entity type: Organization)
- **Enumerated:** April 4, 2015
- **Primary specialty:** Internal Medicine - Hematology & Oncology · taxonomy 207RH0003X
- **Organization subpart:** No
- **Authorized official:** Naixi Chen, PRESIDENT
## Practice location
- **Address:** 1412 SW 43RD ST STE 200, Renton, WA 98057-4803
- **Phone:** (206) 588-1722 · **Fax:** (253) 277-8413
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** February 28, 2027 (DME, Washington, Physician - Hematology/Oncology) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Hematology/Oncology (1), Nurse Practitioner (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** December 22, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1376938506) · Data from the CMS NPPES public registry.