What is Timothy Byun's specialty?

Timothy Byun (NPI 1871545012) is a Medicare-billing provider whose primary specialty is Hematology-Oncology in Orange, CA.

Where does Timothy Byun practice?

Timothy Byun practices in Orange, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1871545012.

How much does Medicare pay Timothy Byun?

Timothy Byun (NPI 1871545012) received approximately $509K in total Medicare Part B payments, serving 364 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1871545012

Timothy ByunMD

PRACTICEJUAN M VELEZ, MD, INCSee all providers at this practice →

Hematology-OncologyOrange, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

678

Unique beneficiaries

—

Total services

1,142

Distinct HCPCS

Medicare payment

$93K

Peer benchmark

Total Medicare services vs. 957 Hematology-Oncology providers in CA — above median (cohort median 4,173).

PRESCRIBING · PART D · 2024

Total Rx claims

1,261

Beneficiaries

—

Total drug cost

$4.7M

Distinct drugs

Brand share

34.7%

Top prescribed drugs

Anastrozole109 claims

Enzalutamide98 claims

Apixaban70 claims

Prednisone66 claims

Dexamethasone63 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$7K

Payment records

235

By payment type

Food and Beverage$5K

Consulting Fee$2K

Top paying entities

Food and Beverage$5K

Consulting Fee$2K

REFERRAL NETWORK

Where Timothy Byun'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
Unilab Corporation Clinical Laboratory · West Hills, CA	188	1,652
Dan Vu Diagnostic Radiology · Orange, CA	44	144
Kirk Ohanian Diagnostic Radiology · Fort Worth, TX	38	135
Hieu Truong Diagnostic Radiology · Orange, CA	36	117
Peter Piampiano Diagnostic Radiology · Knoxville, TN	30	93
Mark Masotto Diagnostic Radiology · Orange, CA	25	78
Kenneth Meng Diagnostic Radiology · Orange, CA	24	75
NAKAMOTO, STANLEY	24	127
Richard Cho Interventional Radiology · Orange, CA	23	64
Elizabeth Cambray-Forker Diagnostic Radiology · Orange, CA	16	33
MANCIANTI, MARIA-LAURA	15	58
Shu Yuan Liao Pathology · Orange, CA	15	77

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