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 2 of 6; records 51–100 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 2 of 6; records 51–100 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=2#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 2 of 6; records 51–100 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=2#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 2 of 6; records 51–100 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=2#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 2 of 6; records 51–100 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=2#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 51–100 of 272.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Daiichi Sankyo Inc. $22.2710/20/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1197032921 CMS
Exelixis Inc. $36.8510/20/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1218805290 CMS
Regeneron Healthcare Solutions, Inc. $39.0210/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1213077444 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $13.7110/16/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1223032992 CMS
Iovance Biotherapeutics, Inc. $17.5610/16/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1251399376 CMS
Takeda Pharmaceuticals U.S.A., Inc. $25.9310/16/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1223902119 CMS
AstraZeneca Pharmaceuticals LP $32.9910/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1206966059 CMS
Sumitomo Pharma America, Inc. $19.4010/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1176739580 CMS
AstraZeneca Pharmaceuticals LP $24.9510/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1206183151 CMS
Merck Sharp & Dohme LLC $34.3610/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238222204 CMS
E.R. Squibb & Sons, L.L.C. $4.6810/07/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582831 CMS
Merck Sharp & Dohme LLC $28.5310/07/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238222206 CMS
Stemline Therapeutics Inc. $31.5610/06/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244108039 CMS
Aveo Pharmaceuticals, Inc. $30.2110/03/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1199901816 CMS
ABBVIE INC. $0.5510/02/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204836588 CMS
ABBVIE INC. $25.2310/02/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204836591 CMS
Janssen Biotech, Inc. $19.8410/02/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1174603513 CMS
TAIHO ONCOLOGY, INC. $16.9710/01/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1211414740 CMS
Novartis Pharmaceuticals Corporation $22.4909/30/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405898 CMS
Novartis Pharmaceuticals Corporation $21.3809/30/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405900 CMS
GlaxoSmithKline, LLC. $25.1109/29/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1190949379 CMS
ABBVIE INC. $22.9909/26/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1204836584 CMS
Azurity Pharmaceuticals, Inc. $19.3809/25/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1242681698 CMS
Daiichi Sankyo Inc. $25.7709/24/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1197023657 CMS
Lilly USA, LLC $27.9609/23/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1186935156 CMS
AstraZeneca Pharmaceuticals LP $34.9509/22/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1206448529 CMS
SOBI, INC $22.8409/22/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1240266269 CMS
Incyte Corporation $27.7109/19/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1226173479 CMS
PFIZER INC. $19.3609/19/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1230330556 CMS
E.R. Squibb & Sons, L.L.C. $8.8209/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582825 CMS
E.R. Squibb & Sons, L.L.C. $4.8009/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582827 CMS
E.R. Squibb & Sons, L.L.C. $5.3309/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582829 CMS
Regeneron Healthcare Solutions, Inc. $36.8309/18/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1213077442 CMS
Celgene Corporation $15.5609/15/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582821 CMS
RECORDATI_RARE_DISEASES_INC. $19.9009/12/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1181726391 CMS
SERVIER PHARMACEUTICALS LLC $28.9009/11/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1229112771 CMS
Novartis Pharmaceuticals Corporation $30.1709/10/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405892 CMS
AstraZeneca Pharmaceuticals LP $19.8409/09/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1207012424 CMS
GlaxoSmithKline, LLC. $23.4509/08/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1190656884 CMS
Celgene Corporation $17.6609/05/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582799 CMS
PUMA BIOTECHNOLOGY, INC. $28.3509/05/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1251750944 CMS
Astellas Pharma US Inc $29.6709/04/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238672251 CMS
Stemline Therapeutics Inc. $21.4709/04/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244108027 CMS
Celgene Corporation $33.7809/03/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1184582801 CMS
Geron Corporation $23.8308/29/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1238896496 CMS
Eisai Inc. $24.0308/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1244514490 CMS
PFIZER INC. $18.2108/28/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1229894312 CMS
PharmaEssentia USA Corporation $24.3208/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1246825566 CMS
SpringWorks Therapeutics, Inc. $37.4408/27/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1232172537 CMS
Novartis Pharmaceuticals Corporation $24.3108/26/2025 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/2026 1200405896 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.