Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

Covered recipient · General Payments record

TIMOTHY E BYUN

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1871545012
CMS profile
356857
Location
ORANGE, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2024 · Entire year

$6,725.86

235 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. Nothing is estimated, weighted, or combined across categories.
  • General Payments only. Research and Ownership/Investment are separate datasets and are never summed with these figures; amounts are kept separate per program year.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2024 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $5,060.86 234
Consulting Fee $1,665.00 1

By paying entity

PY2024 · entire year · sorted by reported total

Paying entityAmountRecords
AstraZeneca Pharmaceuticals LP $2,072.05 17
PFIZER INC. $536.60 28
Novartis Pharmaceuticals Corporation $486.19 21
Merck Sharp & Dohme LLC $231.31 10
Exelixis Inc. $212.25 7
GlaxoSmithKline, LLC. $203.33 13
E.R. Squibb & Sons, L.L.C. $198.46 18
ABBVIE INC. $190.75 14
Sumitomo Pharma America, Inc. $162.04 8
Janssen Biotech, Inc. $156.38 8
ARRAY BIOPHARMA INC $152.58 8
Genentech USA, Inc. $145.14 5
Daiichi Sankyo Inc. $143.36 5
Astellas Pharma US Inc $139.76 6
Gilead Sciences, Inc. $136.69 6
PharmaEssentia USA Corporation $130.26 4
Takeda Pharmaceuticals U.S.A., Inc. $111.36 4
Celgene Corporation $102.40 4
Eisai Inc. $99.11 4
Karyopharm Therapeutics Inc. $94.02 4
Lilly USA, LLC $80.35 3
GENZYME CORPORATION $78.11 4
Regeneron Healthcare Solutions, Inc. $65.55 2
Stemline Therapeutics Inc. $62.13 3
Incyte Corporation $60.33 3
Ipsen Biopharmaceuticals, Inc $58.37 2
SpringWorks Therapeutics, Inc. $55.96 2
BeiGene USA, Inc. $52.19 2
Genmab U.S., Inc. $49.68 2
Boehringer Ingelheim Pharmaceuticals, Inc. $44.38 1
Bayer Healthcare Pharmaceuticals Inc. $42.84 2
TerSera Therapeutics LLC $37.50 1
TAIHO ONCOLOGY, INC. $33.54 2
Pharmacosmos Therapeutics Inc. $32.36 1
Tempus AI, Inc $29.22 1
PUMA BIOTECHNOLOGY, INC. $28.30 1
EMD Serono, Inc. $28.06 1
Blueprint Medicines Corporation $27.94 1
SOBI, INC $27.88 1
Alexion Pharmaceuticals, Inc. $26.38 1
Coherus Biosciences Inc. $25.32 1
ACCORD HEALTHCARE, INC. $23.96 1
ADC Therapeutics America, Inc. $19.58 1
JAZZ PHARMACEUTICALS INC. $16.06 1
Acrotech Biopharma Inc. $15.83 1

Page 2 of 5; records 51–100 of 235 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

TIMOTHY E BYUN

NPI 1871545012 · CMS profile ID 356857

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

ORANGE, CA

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

General Payments, PY2024; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 2 of 5; records 51–100 of 235 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1871545012?year=2024&recipient=provider&page=2#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain
TIMOTHY E BYUN, NPI 1871545012, CMS profile ID 356857. General Payments, PY2024; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 2 of 5; records 51–100 of 235 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1871545012?year=2024&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff.
APA 7
IndustryPayments. (2026). TIMOTHY E BYUN, NPI 1871545012, CMS profile ID 356857. General Payments, PY2024; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 2 of 5; records 51–100 of 235 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1871545012?year=2024&recipient=provider&page=2#records-h. Source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff.
Bluebook
TIMOTHY E BYUN, NPI 1871545012, CMS profile ID 356857, IndustryPayments, General Payments, PY2024; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 2 of 5; records 51–100 of 235 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/e6b17c6a-2534-4207-a4a1-6746a14911ff. https://industrypayments.org/provider/npi-1871545012?year=2024&recipient=provider&page=2#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

Payment records · PY2024

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2024 · Physicians and non-physician practitioners · CMS publication 2026-06-30

235 matching records · $6,725.86 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 235 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 51–100 of 235.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Karyopharm Therapeutics Inc. $23.5110/11/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1145537733 CMS
Genentech USA, Inc. $25.4910/07/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1133125403 CMS
E.R. Squibb & Sons, L.L.C. $20.9010/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101202616 CMS
Stemline Therapeutics Inc. $20.1310/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1142965250 CMS
Daiichi Sankyo Inc. $26.9810/02/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1089405108 CMS
Novartis Pharmaceuticals Corporation $34.2310/02/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758395 CMS
AstraZeneca Pharmaceuticals LP $27.6710/01/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1105461894 CMS
Merck Sharp & Dohme LLC $21.8509/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1141947607 CMS
PFIZER INC. $27.5309/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131376681 CMS
Novartis Pharmaceuticals Corporation $33.0009/27/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758393 CMS
TAIHO ONCOLOGY, INC. $13.1809/27/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1137944688 CMS
Astellas Pharma US Inc $24.5809/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1139396363 CMS
Exelixis Inc. $36.0509/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1138566775 CMS
Gilead Sciences, Inc. $33.4709/20/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1133806143 CMS
Novartis Pharmaceuticals Corporation $27.1709/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758391 CMS
PFIZER INC. $22.1409/17/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131365115 CMS
ARRAY BIOPHARMA INC $21.9809/13/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131365545 CMS
AstraZeneca Pharmaceuticals LP $34.0509/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1105810849 CMS
Astellas Pharma US Inc $18.9709/09/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1139395961 CMS
Regeneron Healthcare Solutions, Inc. $30.0009/09/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1114017806 CMS
Eisai Inc. $22.3609/06/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1110785823 CMS
Celgene Corporation $16.4209/05/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101077478 CMS
Sumitomo Pharma America, Inc. $21.0409/05/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1148834225 CMS
Coherus Biosciences Inc. $25.3209/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1147274656 CMS
Novartis Pharmaceuticals Corporation $25.0709/03/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758387 CMS
SpringWorks Therapeutics, Inc. $29.7108/30/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1085803284 CMS
GlaxoSmithKline, LLC. $3.3508/28/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1116637208 CMS
E.R. Squibb & Sons, L.L.C. $11.2508/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101202612 CMS
Pharmacosmos Therapeutics Inc. $32.3608/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1154820473 CMS
Gilead Sciences, Inc. $15.2308/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1133806141 CMS
Novartis Pharmaceuticals Corporation $32.0608/23/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758389 CMS
PUMA BIOTECHNOLOGY, INC. $28.3008/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1113847514 CMS
Lilly USA, LLC $27.3708/20/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1135438648 CMS
E.R. Squibb & Sons, L.L.C. $5.8508/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101202606 CMS
GENZYME CORPORATION $13.1308/15/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1139695918 CMS
Sumitomo Pharma America, Inc. $19.0808/15/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1148834223 CMS
E.R. Squibb & Sons, L.L.C. $13.0508/12/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101202610 CMS
ARRAY BIOPHARMA INC $21.9808/09/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131371600 CMS
Bayer Healthcare Pharmaceuticals Inc. $19.3208/08/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086225578 CMS
PFIZER INC. $20.3108/08/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1131342202 CMS
ABBVIE INC. $1.9508/07/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1103401127 CMS
ABBVIE INC. $23.5508/07/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1103401129 CMS
Novartis Pharmaceuticals Corporation $27.3708/06/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758385 CMS
AstraZeneca Pharmaceuticals LP $24.2008/01/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1105648708 CMS
AstraZeneca Pharmaceuticals LP $23.9507/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1105776522 CMS
Novartis Pharmaceuticals Corporation $20.9707/25/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758383 CMS
E.R. Squibb & Sons, L.L.C. $22.7807/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1101202600 CMS
Lilly USA, LLC $27.7507/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1135458604 CMS
Novartis Pharmaceuticals Corporation $31.5507/23/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1086758381 CMS
Exelixis Inc. $33.1707/22/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 1138566771 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $45,857.71 242
PY2020 $8,207.43 159
PY2021 $8,123.38 221
PY2022 $8,631.42 227
PY2023 $15,051.12 214
PY2024 $6,725.86 235
PY2025 $5,583.21 276

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-06-30
Program years on this page
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.