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

Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

EUGENE J YOON

Allopathic & Osteopathic Physicians Internal Medicine Gastroenterology

NPI
1861618449
CMS profile
311288
Location
FULLERTON, 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.

General Payments · PY2019–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$3,464.23

99 records · 0 disputed

“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.
  • Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $2,422.61 95
Travel and Lodging $1,041.62 4

By paying entity

PY2025 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $1,924.82 108
PY2020 $1,085.81 70
PY2021 $2,293.34 114
PY2022 $1,601.08 70
PY2023 $1,974.95 110
PY2024 $1,756.18 78
PY2025 $3,464.23 99

Payment records · PY2025 (99)

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

Program year 2025 201920202021202220232024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Madrigal Pharmaceuticals $20.84 12/19/2025 Food and Beverage No dispute reported 06/30/2026 1248324010 CMS
ABBVIE INC. $13.06 12/16/2025 Food and Beverage No dispute reported 06/30/2026 1204826362 CMS
GENZYME CORPORATION $18.24 12/12/2025 Food and Beverage No dispute reported 06/30/2026 1233644629 CMS
Madrigal Pharmaceuticals $31.38 12/08/2025 Food and Beverage No dispute reported 06/30/2026 1248324008 CMS
ABBVIE INC. $11.26 12/03/2025 Food and Beverage No dispute reported 06/30/2026 1204826359 CMS
Ardelyx, Inc. $20.18 11/19/2025 Food and Beverage No dispute reported 06/30/2026 1247894398 CMS
Madrigal Pharmaceuticals $7.94 11/19/2025 Food and Beverage No dispute reported 06/30/2026 1248324006 CMS
Janssen Biotech, Inc. $10.86 11/17/2025 Food and Beverage No dispute reported 06/30/2026 1174621689 CMS
PFIZER INC. $17.80 11/17/2025 Food and Beverage No dispute reported 06/30/2026 1230862082 CMS
ABBVIE INC. $124.99 11/12/2025 Food and Beverage No dispute reported 06/30/2026 1204826354 CMS
Janssen Biotech, Inc. $36.97 11/10/2025 Food and Beverage No dispute reported 06/30/2026 1174621949 CMS
Madrigal Pharmaceuticals $18.53 11/07/2025 Food and Beverage No dispute reported 06/30/2026 1248324004 CMS
HISTOSONICS, INC. $228.20 10/29/2025 Food and Beverage No dispute reported 06/30/2026 1233992600 CMS
ABBVIE INC. $18.65 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1204826350 CMS
Janssen Biotech, Inc. $24.32 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1174620763 CMS
ABBVIE INC. $5.43 10/20/2025 Food and Beverage No dispute reported 06/30/2026 1204826344 CMS
PFIZER INC. $15.38 10/20/2025 Food and Beverage No dispute reported 06/30/2026 1230695873 CMS
Takeda Pharmaceuticals U.S.A., Inc. $18.85 10/10/2025 Food and Beverage No dispute reported 06/30/2026 1223847683 CMS
ABBVIE INC. $12.78 10/07/2025 Food and Beverage No dispute reported 06/30/2026 1204826339 CMS
Madrigal Pharmaceuticals $6.34 10/07/2025 Food and Beverage No dispute reported 06/30/2026 1248324002 CMS
ABBVIE INC. $8.80 10/06/2025 Food and Beverage No dispute reported 06/30/2026 1204826335 CMS
ABBVIE INC. $14.30 09/30/2025 Food and Beverage No dispute reported 06/30/2026 1204826331 CMS
ABBVIE INC. $4.80 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1204826327 CMS
ABBVIE INC. $13.39 09/12/2025 Food and Beverage No dispute reported 06/30/2026 1204826323 CMS
ABBVIE INC. $8.38 09/09/2025 Food and Beverage No dispute reported 06/30/2026 1204826319 CMS
Boston Scientific Corporation $11.25 09/05/2025 Food and Beverage No dispute reported 06/30/2026 1181417886 CMS
Boston Scientific Corporation $34.32 09/05/2025 Food and Beverage No dispute reported 06/30/2026 1181417890 CMS
Boston Scientific Corporation $224.01 09/05/2025 Travel and Lodging No dispute reported 06/30/2026 1181417892 CMS
Boston Scientific Corporation $20.98 09/04/2025 Food and Beverage No dispute reported 06/30/2026 1181417884 CMS
Boston Scientific Corporation $119.82 09/04/2025 Food and Beverage No dispute reported 06/30/2026 1181417888 CMS
Boston Scientific Corporation $182.07 09/04/2025 Travel and Lodging No dispute reported 06/30/2026 1181417894 CMS
Boston Scientific Corporation $167.16 09/04/2025 Travel and Lodging No dispute reported 06/30/2026 1181417896 CMS
Boston Scientific Corporation $468.38 09/04/2025 Travel and Lodging No dispute reported 06/30/2026 1181417898 CMS
GENZYME CORPORATION $24.23 09/03/2025 Food and Beverage No dispute reported 06/30/2026 1233644579 CMS
ABBVIE INC. $7.31 08/27/2025 Food and Beverage No dispute reported 06/30/2026 1204826316 CMS
PFIZER INC. $21.23 08/27/2025 Food and Beverage No dispute reported 06/30/2026 1230613600 CMS
Ardelyx, Inc. $121.83 08/20/2025 Food and Beverage No dispute reported 06/30/2026 1247894396 CMS
ABBVIE INC. $27.66 08/13/2025 Food and Beverage No dispute reported 06/30/2026 1204826311 CMS
Ipsen Biopharmaceuticals, Inc $33.49 07/30/2025 Food and Beverage No dispute reported 06/30/2026 1208833878 CMS
Takeda Pharmaceuticals U.S.A., Inc. $14.88 07/28/2025 Food and Beverage No dispute reported 06/30/2026 1223818508 CMS
Ardelyx, Inc. $15.75 07/23/2025 Food and Beverage No dispute reported 06/30/2026 1247894394 CMS
ABBVIE INC. $6.88 07/16/2025 Food and Beverage No dispute reported 06/30/2026 1204826307 CMS
Fresenius Kabi USA, LLC $34.75 07/09/2025 Food and Beverage No dispute reported 06/30/2026 1250534887 CMS
ABBVIE INC. $9.91 07/07/2025 Food and Beverage No dispute reported 06/30/2026 1204826304 CMS
ABBVIE INC. $13.70 07/02/2025 Food and Beverage No dispute reported 06/30/2026 1204826299 CMS
Ardelyx, Inc. $12.18 07/01/2025 Food and Beverage No dispute reported 06/30/2026 1247894392 CMS
Janssen Biotech, Inc. $11.09 06/30/2025 Food and Beverage No dispute reported 06/30/2026 1174620029 CMS
Madrigal Pharmaceuticals $22.70 06/30/2025 Food and Beverage No dispute reported 06/30/2026 1248324000 CMS
Madrigal Pharmaceuticals $11.22 06/24/2025 Food and Beverage No dispute reported 06/30/2026 1248323998 CMS
Intercept Pharmaceuticals, Inc. $15.88 06/23/2025 Food and Beverage No dispute reported 06/30/2026 1249871082 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $24.46 06/23/2025 Food and Beverage No dispute reported 06/30/2026 1231880098 CMS
ABBVIE INC. $21.28 06/17/2025 Food and Beverage No dispute reported 06/30/2026 1204826296 CMS
ABBVIE INC. $17.36 06/13/2025 Food and Beverage No dispute reported 06/30/2026 1204826292 CMS
ABBVIE INC. $10.05 06/10/2025 Food and Beverage No dispute reported 06/30/2026 1204826288 CMS
Madrigal Pharmaceuticals $9.59 06/04/2025 Food and Beverage No dispute reported 06/30/2026 1248323996 CMS
PFIZER INC. $16.82 06/04/2025 Food and Beverage No dispute reported 06/30/2026 1230549894 CMS
ABBVIE INC. $14.46 05/28/2025 Food and Beverage No dispute reported 06/30/2026 1204826284 CMS
ABBVIE INC. $23.38 05/19/2025 Food and Beverage No dispute reported 06/30/2026 1204826280 CMS
Takeda Pharmaceuticals U.S.A., Inc. $16.84 05/16/2025 Food and Beverage No dispute reported 06/30/2026 1223831712 CMS
ABBVIE INC. $12.14 05/13/2025 Food and Beverage No dispute reported 06/30/2026 1204826276 CMS
Janssen Biotech, Inc. $32.98 05/13/2025 Food and Beverage No dispute reported 06/30/2026 1174620980 CMS
ABBVIE INC. $13.02 05/05/2025 Food and Beverage No dispute reported 06/30/2026 1204826272 CMS
Ardelyx, Inc. $17.27 05/02/2025 Food and Beverage No dispute reported 06/30/2026 1247894390 CMS
ABBVIE INC. $18.89 04/29/2025 Food and Beverage No dispute reported 06/30/2026 1204826268 CMS
Janssen Biotech, Inc. $21.67 04/28/2025 Food and Beverage No dispute reported 06/30/2026 1174619942 CMS
Janssen Biotech, Inc. $21.67 04/28/2025 Food and Beverage No dispute reported 06/30/2026 1174620155 CMS
GENZYME CORPORATION $25.61 04/25/2025 Food and Beverage No dispute reported 06/30/2026 1233644533 CMS
ABBVIE INC. $125.00 04/23/2025 Food and Beverage No dispute reported 06/30/2026 1204826263 CMS
ABBVIE INC. $13.17 04/22/2025 Food and Beverage No dispute reported 06/30/2026 1204826258 CMS
ABBVIE INC. $14.01 04/15/2025 Food and Beverage No dispute reported 06/30/2026 1204826254 CMS
CONMED Corporation $24.48 04/11/2025 Food and Beverage No dispute reported 06/30/2026 1208715268 CMS
ABBVIE INC. $13.83 04/07/2025 Food and Beverage No dispute reported 06/30/2026 1204826251 CMS
Janssen Biotech, Inc. $18.89 04/07/2025 Food and Beverage No dispute reported 06/30/2026 1174621469 CMS
ABBVIE INC. $10.80 04/02/2025 Food and Beverage No dispute reported 06/30/2026 1204826247 CMS
Phathom Pharmaceuticals, Inc. $7.70 04/02/2025 Food and Beverage No dispute reported 06/30/2026 1219381761 CMS
Phathom Pharmaceuticals, Inc. $5.72 04/02/2025 Food and Beverage No dispute reported 06/30/2026 1219381773 CMS
Lilly USA, LLC $97.10 03/26/2025 Food and Beverage No dispute reported 06/30/2026 1186614214 CMS
PFIZER INC. $19.64 03/26/2025 Food and Beverage No dispute reported 06/30/2026 1230561487 CMS
ABBVIE INC. $10.62 03/18/2025 Food and Beverage No dispute reported 06/30/2026 1204826243 CMS
ABBVIE INC. $2.41 03/12/2025 Food and Beverage No dispute reported 06/30/2026 1204826239 CMS
ABBVIE INC. $10.51 03/04/2025 Food and Beverage No dispute reported 06/30/2026 1204826235 CMS
Lilly USA, LLC $26.45 02/28/2025 Food and Beverage No dispute reported 06/30/2026 1186614216 CMS
ABBVIE INC. $17.72 02/26/2025 Food and Beverage No dispute reported 06/30/2026 1204826231 CMS
GENZYME CORPORATION $23.64 02/24/2025 Food and Beverage No dispute reported 06/30/2026 1233644655 CMS
Janssen Biotech, Inc. $7.00 02/24/2025 Food and Beverage No dispute reported 06/30/2026 1174621731 CMS
ABBVIE INC. $3.80 02/20/2025 Food and Beverage No dispute reported 06/30/2026 1204826227 CMS
PFIZER INC. $15.64 02/19/2025 Food and Beverage No dispute reported 06/30/2026 1230619829 CMS
Gilead Sciences, Inc. $26.22 02/14/2025 Food and Beverage No dispute reported 06/30/2026 1234464319 CMS
Madrigal Pharmaceuticals $10.95 02/14/2025 Food and Beverage No dispute reported 06/30/2026 1248323994 CMS
ABBVIE INC. $13.29 02/07/2025 Food and Beverage No dispute reported 06/30/2026 1204826222 CMS
Takeda Pharmaceuticals U.S.A., Inc. $19.03 01/29/2025 Food and Beverage No dispute reported 06/30/2026 1223849202 CMS
ABBVIE INC. $14.68 01/28/2025 Food and Beverage No dispute reported 06/30/2026 1204826218 CMS
Ardelyx, Inc. $20.61 01/27/2025 Food and Beverage No dispute reported 06/30/2026 1247894388 CMS
Madrigal Pharmaceuticals $125.00 01/22/2025 Food and Beverage No dispute reported 06/30/2026 1248323992 CMS
ABBVIE INC. $25.43 01/15/2025 Food and Beverage No dispute reported 06/30/2026 1204826210 CMS
ABBVIE INC. $14.25 01/15/2025 Food and Beverage No dispute reported 06/30/2026 1204826214 CMS
GENZYME CORPORATION $22.42 01/13/2025 Food and Beverage No dispute reported 06/30/2026 1233644639 CMS
Gilead Sciences, Inc. $19.50 01/10/2025 Food and Beverage No dispute reported 06/30/2026 1234533619 CMS
Janssen Biotech, Inc. $22.88 01/06/2025 Food and Beverage No dispute reported 06/30/2026 1174621372 CMS

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
Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
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
EUGENE J YOON, NPI 1861618449. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1861618449.
APA 7
IndustryPayments. (2026). EUGENE J YOON, NPI 1861618449 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1861618449
Bluebook
EUGENE J YOON, NPI 1861618449, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1861618449.

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