What is John Yoon's specialty?

John Yoon (NPI 1588860944) is a Medicare-billing provider whose primary specialty is Diagnostic Radiology in Santa Barbara, CA.

Where does John Yoon practice?

John Yoon practices in Santa Barbara, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1588860944.

How much does Medicare pay John Yoon?

John Yoon (NPI 1588860944) received approximately $486K in total Medicare Part B payments, serving 5,003 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1588860944

John YoonM.D.

Diagnostic RadiologySanta Barbara, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

7,020

Unique beneficiaries

—

Total services

37,750

Distinct HCPCS

Medicare payment

$449K

Peer benchmark

Total Medicare services vs. 3,474 Diagnostic Radiology providers in CA — top quintile (cohort median 2,975).

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

No data available for this provider in 2025.

REFERRAL NETWORK

Where John Yoon'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). 176 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SANTA BARBARA COTTAGE HOSPITAL	1,137	2,122
Pacific Diagnostic Laboratories Clinical Laboratory · Santa Barbara, CA	1,122	2,656
American Medical Response West Ambulance Service Provider · Buellton, CA	445	925
Steven Hartzman Diagnostic Radiology · Santa Barbara, CA	250	744
Christopher Kuzminski Diagnostic Radiology · Santa Barbara, CA	218	544
Sean Snodgress Diagnostic Radiology · Santa Barbara, CA	202	460
Michael Trambert Diagnostic Radiology · Santa Barbara, CA	196	438
LEE, ARTHUR	191	595
James Benzian Diagnostic Radiology · Santa Barbara, CA	184	382
POJUNAS, KATHLEEN	169	311
LOMPOC VALLEY MEDICAL CENTER	111	212
GOLETA VALLEY COTTAGE HOSPITAL	111	242

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