What is Joseph Poen's specialty?

Joseph Poen (NPI 1972585941) is a Medicare-billing provider whose primary specialty is Radiation Oncology in Greenbrae, CA.

Where does Joseph Poen practice?

Joseph Poen practices in Greenbrae, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1972585941.

How much does Medicare pay Joseph Poen?

Joseph Poen (NPI 1972585941) received approximately $231K in total Medicare Part B payments, serving 223 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1972585941

Joseph PoenMD

Radiation OncologyGreenbrae, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,032

Unique beneficiaries

—

Total services

3,099

Distinct HCPCS

Medicare payment

$225K

Peer benchmark

Total Medicare services vs. 496 Radiation Oncology providers in CA — top quintile (cohort median 1,716).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$807

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Tamsulosin Hcl43 claims

Methylprednisolone17 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Joseph Poen'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). 17 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
MARIN GENERAL HOSPITAL	217	3,549
Lloyd Miyawaki Radiation Oncology · Greenbrae, CA	139	1,411
HALBERG, FRANCINE	86	628
Brian Nagai Diagnostic Radiology · Fremont, CA	71	328
Donna Hoghooghi Diagnostic Radiology · Greenbrae, CA	60	246
SUTTER BAY HOSPITALS	55	455
Philip Kurzman Diagnostic Radiology · Greenbrae, CA	47	264
MARIN MAGNETIC RESONANCE IMAGING CENTER, LLC	44	168
Peter Eisenberg Specialist · Greenbrae, CA	43	649
ORWIG, DENNIS	38	226
Natalya Lvoff Diagnostic Radiology · Greenbrae, CA	29	153
Bobbie Head Medical Oncology · Greenbrae, CA	26	211

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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