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

STEVEN SIWEI YU

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1659643682
CMS profile
1392028
Location
FOUNTAIN VALLEY, 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 · PY2025 · Entire year

$6,462.09

272 records · 0 disputed

Summary and payment records

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

“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

PY2025 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $6,462.09 272

By paying entity

PY2025 · entire year · sorted by reported total

Paying entityAmountRecords
Merck Sharp & Dohme LLC $507.67 18
AstraZeneca Pharmaceuticals LP $461.95 18
Novartis Pharmaceuticals Corporation $365.28 14
Janssen Biotech, Inc. $344.18 14
Daiichi Sankyo Inc. $262.97 10
ABBVIE INC. $262.45 16
GlaxoSmithKline, LLC. $237.63 14
Exelixis Inc. $230.74 8
PFIZER INC. $200.86 11
E.R. Squibb & Sons, L.L.C. $191.05 15
Celgene Corporation $176.66 11
ADC THERAPEUTICS AMERICA, INC. $172.22 4
Incyte Corporation $167.03 6
PUMA BIOTECHNOLOGY, INC. $153.55 8
Regeneron Healthcare Solutions, Inc. $151.88 4
Eisai Inc. $148.08 6
Gilead Sciences, Inc. $146.22 6
ARRAY BIOPHARMA INC $140.17 6
BeOne Medicines USA, Inc. $138.50 4
Takeda Pharmaceuticals U.S.A., Inc. $136.28 5
Stemline Therapeutics Inc. $120.99 4
SOBI, INC $114.41 4
Bayer Healthcare Pharmaceuticals Inc. $102.50 4
RECORDATI_RARE_DISEASES_INC. $89.89 4
GENZYME CORPORATION $89.86 4
PharmaEssentia USA Corporation $87.77 3
Sumitomo Pharma America, Inc. $74.57 4
EMD Serono, Inc. $74.38 2
Lilly USA, LLC $73.73 3
Genentech USA, Inc. $67.66 2
SpringWorks Therapeutics, Inc. $66.39 2
Boehringer Ingelheim Pharmaceuticals, Inc. $65.56 2
Rigel Pharmaceuticals, Inc. $63.46 3
Karyopharm Therapeutics Inc. $54.62 2
Alexion Pharmaceuticals, Inc. $53.19 2
Genmab U.S., Inc. $52.90 2
TAIHO ONCOLOGY, INC. $51.74 3
BeiGene USA, Inc. $49.34 2
Blueprint Medicines Corporation $42.64 1
Iovance Biotherapeutics, Inc. $42.01 2
Azurity Pharmaceuticals, Inc. $36.91 2
Syndax Pharmaceuticals, Inc. $33.49 1
Aveo Pharmaceuticals, Inc. $30.21 1
Astellas Pharma US Inc $29.67 1
SERVIER PHARMACEUTICALS LLC $28.90 1
GE HEALTHCARE $26.37 1
Dendreon Pharmaceuticals LLC $26.27 1
Spectrum Pharmaceuticals Inc. $24.55 1
Legend Biotech USA Inc. $24.52 1
Geron Corporation $23.83 1
JAZZ PHARMACEUTICALS INC. $23.25 1
Coherus Oncology, Inc. $21.90 1
Fennec Pharmaceuticals, Inc. $21.14 1
Pharmacosmos Therapeutics Inc. $17.58 1
KYOWA KIRIN, INC. $15.85 1
SHORLA ONCOLOGY INC. $15.12 1
Ipsen Biopharmaceuticals, Inc $14.85 1
Apellis Pharmaceuticals, Inc. $14.70 1

Page 3 of 6; records 101–150 of 272 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

STEVEN SIWEI YU

NPI 1659643682 · CMS profile ID 1392028

Allopathic & Osteopathic Physicians / Internal Medicine / Hematology & Oncology

FOUNTAIN VALLEY, 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, PY2025; 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 3 of 6; records 101–150 of 272 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1659643682?year=2025&recipient=provider&page=3#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e

Cite these filtered records

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

Plain
STEVEN SIWEI YU, NPI 1659643682, CMS profile ID 1392028. General Payments, PY2025; 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 3 of 6; records 101–150 of 272 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1659643682?year=2025&recipient=provider&page=3#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e.
APA 7
IndustryPayments. (2026). STEVEN SIWEI YU, NPI 1659643682, CMS profile ID 1392028. General Payments, PY2025; 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 3 of 6; records 101–150 of 272 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1659643682?year=2025&recipient=provider&page=3#records-h. Source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e.
Bluebook
STEVEN SIWEI YU, NPI 1659643682, CMS profile ID 1392028, IndustryPayments, General Payments, PY2025; 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 3 of 6; records 101–150 of 272 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/fb0b1734-1410-429d-92f6-3f4b35218e5e. https://industrypayments.org/provider/npi-1659643682?year=2025&recipient=provider&page=3#records-h.

Centers for Medicare & Medicaid Services, Open Payments

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

Payment records · PY2025

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

General Payments · PY2025 · Physicians and non-physician practitioners · CMS publication 2026-06-30

272 matching records · $6,462.09 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 272 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 101–150 of 272.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Daiichi Sankyo Inc. $27.1608/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1197015013 CMS
Exelixis Inc. $37.4308/22/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1218805287 CMS
TAIHO ONCOLOGY, INC. $13.6608/21/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1211405040 CMS
Merck Sharp & Dohme LLC $28.4208/20/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238230208 CMS
Novartis Pharmaceuticals Corporation $27.4808/19/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405894 CMS
GlaxoSmithKline, LLC. $16.1308/15/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1190730556 CMS
RECORDATI_RARE_DISEASES_INC. $29.4308/15/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1181726389 CMS
AstraZeneca Pharmaceuticals LP $26.8208/13/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1206373507 CMS
AstraZeneca Pharmaceuticals LP $23.9508/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1207130583 CMS
PFIZER INC. $24.7108/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1229791891 CMS
Regeneron Healthcare Solutions, Inc. $37.7008/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1213077440 CMS
ARRAY BIOPHARMA INC $25.3808/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1229894302 CMS
Coherus Oncology, Inc. $21.9008/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1235237567 CMS
Exelixis Inc. $13.3008/07/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1218805283 CMS
E.R. Squibb & Sons, L.L.C. $20.4808/06/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582807 CMS
Stemline Therapeutics Inc. $35.1708/05/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244108033 CMS
Eisai Inc. $29.6108/01/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244514488 CMS
Karyopharm Therapeutics Inc. $26.5308/01/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1246652465 CMS
ARRAY BIOPHARMA INC $20.5107/31/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1229564731 CMS
AstraZeneca Pharmaceuticals LP $19.1407/31/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1206425085 CMS
ABBVIE INC. $21.2407/30/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204836576 CMS
ABBVIE INC. $0.8007/30/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204836580 CMS
GENZYME CORPORATION $29.6207/29/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1233594504 CMS
GlaxoSmithKline, LLC. $20.1907/29/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1191215382 CMS
Legend Biotech USA Inc. $24.5207/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1236481652 CMS
E.R. Squibb & Sons, L.L.C. $18.7107/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582795 CMS
PFIZER INC. $20.4907/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1229565559 CMS
Takeda Pharmaceuticals U.S.A., Inc. $2.7407/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1223799568 CMS
EMD Serono, Inc. $38.8007/24/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1236909105 CMS
Takeda Pharmaceuticals U.S.A., Inc. $35.6407/24/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1223935804 CMS
Janssen Biotech, Inc. $24.7407/23/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1174605868 CMS
Merck Sharp & Dohme LLC $26.6007/23/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238098046 CMS
Daiichi Sankyo Inc. $28.3807/22/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1197102039 CMS
Novartis Pharmaceuticals Corporation $26.7407/22/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405890 CMS
Novartis Pharmaceuticals Corporation $32.5907/16/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405888 CMS
Spectrum Pharmaceuticals Inc. $24.5507/14/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1221050538 CMS
Alexion Pharmaceuticals, Inc. $18.4007/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1202948774 CMS
Iovance Biotherapeutics, Inc. $24.4507/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1251401128 CMS
Novartis Pharmaceuticals Corporation $24.8907/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405886 CMS
PUMA BIOTECHNOLOGY, INC. $15.0007/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1251750868 CMS
Gilead Sciences, Inc. $27.5907/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1234454349 CMS
BeOne Medicines USA, Inc. $38.4207/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1202892580 CMS
Janssen Biotech, Inc. $20.3207/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1174606352 CMS
Janssen Biotech, Inc. $25.9307/07/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1174603103 CMS
ABBVIE INC. $32.2007/03/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204836572 CMS
Regeneron Healthcare Solutions, Inc. $38.3307/02/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1213077438 CMS
ADC THERAPEUTICS AMERICA, INC. $24.1506/30/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1246130358 CMS
SOBI, INC $47.3106/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1240266264 CMS
E.R. Squibb & Sons, L.L.C. $23.3506/26/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582785 CMS
E.R. Squibb & Sons, L.L.C. $1.2606/26/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582787 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $3,936.66 233
PY2020 $3,438.53 201
PY2021 $3,854.44 222
PY2022 $4,888.59 268
PY2023 $5,523.57 281
PY2024 $6,327.90 271
PY2025 $6,462.09 272

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.