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 · PY2019 · Entire year

$45,857.71

242 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

PY2019 · entire year · sorted by reported total

By paying entity

PY2019 · entire year · sorted by reported total

Payment records · PY2019

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

General Payments · PY2019 · Physicians and non-physician practitioners · CMS publication 2026-06-30

242 matching records · $45,857.71 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 242 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 1–50 of 242.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
PFIZER INC. $0.5912/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673848873 CMS
Seattle Genetics, Inc. $17.6412/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026678796623 CMS
EISAI INC. $23.0512/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697022871 CMS
PFIZER INC. $2.8112/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673698741 CMS
E.R. Squibb & Sons, L.L.C. $250.0012/18/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026708430657 CMS
AbbVie, Inc. $13.5812/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026647725753 CMS
PFIZER INC. $7.0712/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673640557 CMS
E.R. Squibb & Sons, L.L.C. $0.1412/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651222017 CMS
E.R. Squibb & Sons, L.L.C. $13.0612/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651222019 CMS
GENZYME CORPORATION $20.2912/16/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026694236647 CMS
Foundation Medicine, Inc. $12.5612/13/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026675547745 CMS
Celgene Corporation $14.0412/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672991392 CMS
E.R. Squibb & Sons, L.L.C. $500.0012/11/2019 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651222015 CMS
Genentech USA, Inc. $10.9512/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026681391181 CMS
Genentech USA, Inc. $0.4212/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026681408789 CMS
E.R. Squibb & Sons, L.L.C. $4,310.0012/04/2019 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651222013 CMS
Gilead Sciences, Inc. $16.8912/02/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026681487589 CMS
Bayer HealthCare Pharmaceuticals Inc. $21.6311/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026628414025 CMS
Ipsen Biopharmaceuticals, Inc $19.1411/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026640636289 CMS
Merck Sharp & Dohme Corporation $3,185.0011/26/2019 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695840537 CMS
Merck Sharp & Dohme Corporation $150.0011/26/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695840539 CMS
PFIZER INC. $13.2811/26/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673687791 CMS
EISAI INC. $16.2411/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697020003 CMS
GENZYME CORPORATION $12.4411/20/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026694242033 CMS
PFIZER INC. $14.0911/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673660627 CMS
PFIZER INC. $3.6911/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673787429 CMS
PFIZER INC. $5.8211/19/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673787431 CMS
PFIZER INC. $1.3011/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673787427 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $12.9111/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026700468945 CMS
Merck Sharp & Dohme Corporation $19.1711/15/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695847177 CMS
AstraZeneca Pharmaceuticals LP $123.0211/14/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026685219759 CMS
Merck Sharp & Dohme Corporation $17.8711/11/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695835133 CMS
Genentech USA, Inc. $14.2711/08/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026681330775 CMS
PFIZER INC. $8.3711/04/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673766831 CMS
E.R. Squibb & Sons, L.L.C. $3,505.0011/01/2019 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651222001 CMS
EISAI INC. $24.3811/01/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697019065 CMS
Merck Sharp & Dohme Corporation $19.7411/01/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695838293 CMS
PFIZER INC. $9.7110/31/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026673674753 CMS
Merck Sharp & Dohme Corporation $365.9610/30/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695809835 CMS
Merck Sharp & Dohme Corporation $261.7610/30/2019 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/2026695822193 CMS
Celgene Corporation $14.2310/29/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026672993647 CMS
TerSera Therapeutics LLC $23.7110/27/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026699765403 CMS
EISAI INC. $16.0510/23/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026697043581 CMS
Novartis Pharmaceuticals Corporation $21.0410/22/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026659182659 CMS
Janssen Pharmaceuticals, Inc $2.1510/21/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026658383191 CMS
GENZYME CORPORATION $17.5010/18/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026694178009 CMS
Janssen Biotech, Inc. $18.9110/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026658354209 CMS
Seattle Genetics, Inc. $16.1010/17/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026678796589 CMS
Secura Bio, Inc. $14.6310/16/2019 Food and Beverage No dispute reported Delay: No
Change: CHANGED
06/30/2026625211703 CMS
E.R. Squibb & Sons, L.L.C. $115.2110/10/2019 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026651221999 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.

Cite this record.

Plain
TIMOTHY E BYUN, NPI 1871545012. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1871545012.
APA 7
IndustryPayments. (2026). TIMOTHY E BYUN, NPI 1871545012 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1871545012
Bluebook
TIMOTHY E BYUN, NPI 1871545012, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1871545012.

Source: Centers for Medicare & Medicaid Services, Open Payments.