What is Peter Sien's specialty?

Peter Sien (NPI 1053399568) is a Medicare-billing provider whose primary specialty is Radiation Oncology in Kennewick, WA.

Where does Peter Sien practice?

Peter Sien practices in Kennewick, WA, based on the location reported in the CMS Medicare provider datasets for NPI 1053399568.

How much does Medicare pay Peter Sien?

Peter Sien (NPI 1053399568) received approximately $21K in total Medicare Part B payments, serving 65 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1053399568

Peter SienMD

Radiation OncologyKennewick, WAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

Unique beneficiaries

—

Total services

Distinct HCPCS

Medicare payment

$5K

Peer benchmark

Total Medicare services vs. 137 Radiation Oncology providers in WA — bottom quintile (cohort median 1,376).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$56

Payment records

By payment type

Food and Beverage$56

Top paying entities

Food and Beverage$56

REFERRAL NETWORK

Where Peter Sien's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 5 inbound referrers · 7 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
DOCTORS MEDICAL CENTER OF MODESTO, INC.	39	193
Robert Williams Medical Oncology · Beverly Hills, CA	18	321
Swati Andhavarapu Hematology-Oncology · Modesto, CA	16	103
Curtis Strong Pathology · Modesto, CA	12	89
Kathleen Eve General Surgery · Modesto, CA	11	150

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Unilab Corporation Clinical Laboratory · Sacramento, CA	42	628
David Lowther Radiation Oncology · Modesto, CA	32	403
Modesto Radiology Imaging, Inc. Independent Diagnostic Testing Facility (IDTF) · Modesto, CA	31	147
DOCTORS MEDICAL CENTER OF MODESTO, INC.	29	124
Swati Andhavarapu Hematology-Oncology · Modesto, CA	21	139
Robert Williams Medical Oncology · Beverly Hills, CA	18	308
Mussa Banisadre Hematology · Modesto, CA	11	363

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events