IndustryPayments
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

YVONNE Y CHEN

Allopathic & Osteopathic Physicians Internal Medicine Nephrology

NPI
1306959135
CMS profile
331056
Location
OAKLAND, CA

General Payments · PY2018–2024

$9,311.93

  • Reported across 259 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$4,676.74

67 records · 0 disputed

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

How these totals are calculated
  • The total is the sum of the General Payments records CMS published for the labeled program year(s), exactly as published. 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 (all years).
  • Methodology & Data — sourcing, labeling, and limitations.

Related groups: Nephrology CA All categories

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $2,983.75 1
Food and Beverage $1,609.62 61
Travel and Lodging $55.00 2
Education $28.37 3

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Otsuka Pharmaceutical Development & Commercialization, Inc. $3,210.15 6
Amgen Inc. $277.44 12
Fresenius USA Marketing, Inc. $179.53 9
Otsuka America Pharmaceutical, Inc. $171.97 4
Lilly USA, LLC $129.14 4
Acerta Pharma LLC $97.23 5
Novo Nordisk AS $87.67 5
CALLIDITAS THERAPEUTICS US INC. $86.90 4
Ardelyx, Inc. $86.82 3
Retrophin, Inc. $67.12 4
Bayer HealthCare Pharmaceuticals Inc. $64.13 3
Aurinia Pharma U.S., Inc. $51.95 2
NOVARTIS PHARMACEUTICALS CORPORATION $47.29 2
GlaxoSmithKline, LLC. $34.62 1
Boehringer Ingelheim Pharmaceuticals, Inc. $32.34 1
Mallinckrodt Hospital Products Inc. $30.23 1
OPKO Pharmaceuticals, LLC $22.21 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $161.33 8
PY2019 $249.33 9
PY2020 $365.30 18
PY2021 $790.41 11
PY2022 $798.25 37
PY2023 $2,270.57 109
PY2024 $4,676.74 67

Payment records · PY2024 (67)

Sorted by paying entity, then date · as published by CMS

Program year 2024 201820192020202120222023 Record-level detail is published for PY2024; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Amgen Inc. $25.29 01/24/2024 Food and Beverage Undisputed 01/23/2026 1115497736 CMS
Amgen Inc. $23.72 03/23/2024 Food and Beverage Undisputed 01/23/2026 1115497750 CMS
Amgen Inc. $25.07 04/04/2024 Food and Beverage Undisputed 01/23/2026 1115497760 CMS
Amgen Inc. $27.73 05/25/2024 Food and Beverage Undisputed 01/23/2026 1115497775 CMS
Amgen Inc. $23.12 06/07/2024 Food and Beverage Undisputed 01/23/2026 1115497783 CMS
Amgen Inc. $1.43 06/24/2024 Food and Beverage Undisputed 01/23/2026 1115497794 CMS
Amgen Inc. $10.40 06/24/2024 Food and Beverage Undisputed 01/23/2026 1115497804 CMS
Amgen Inc. $11.78 06/26/2024 Food and Beverage Undisputed 01/23/2026 1115497816 CMS
Amgen Inc. $33.11 08/22/2024 Food and Beverage Undisputed 01/23/2026 1115497825 CMS
Amgen Inc. $30.20 10/07/2024 Food and Beverage Undisputed 01/23/2026 1115497836 CMS
Amgen Inc. $33.38 10/10/2024 Food and Beverage Undisputed 01/23/2026 1117525263 CMS
Amgen Inc. $32.21 12/02/2024 Food and Beverage Undisputed 01/23/2026 1115497846 CMS
Ardelyx, Inc. $31.78 01/11/2024 Food and Beverage Undisputed 01/23/2026 1146675090 CMS
Ardelyx, Inc. $22.01 07/25/2024 Food and Beverage Undisputed 01/23/2026 1146675092 CMS
Ardelyx, Inc. $33.03 10/17/2024 Food and Beverage Undisputed 01/23/2026 1146675094 CMS
AstraZeneca Pharmaceuticals LP $28.38 04/04/2024 Food and Beverage Undisputed 01/23/2026 1104657435 CMS
AstraZeneca Pharmaceuticals LP $18.02 06/08/2024 Food and Beverage Undisputed 01/23/2026 1104521644 CMS
AstraZeneca Pharmaceuticals LP $15.36 08/06/2024 Food and Beverage Undisputed 01/23/2026 1104427457 CMS
AstraZeneca Pharmaceuticals LP $16.94 08/20/2024 Food and Beverage Undisputed 01/23/2026 1104298342 CMS
AstraZeneca Pharmaceuticals LP $18.53 10/18/2024 Food and Beverage Undisputed 01/23/2026 1105393952 CMS
Aurinia Pharma U.S., Inc. $28.88 07/16/2024 Food and Beverage Undisputed 01/23/2026 1150677911 CMS
Aurinia Pharma U.S., Inc. $23.07 07/18/2024 Food and Beverage Undisputed 01/23/2026 1150677913 CMS
Bayer Healthcare Pharmaceuticals Inc. $19.21 05/01/2024 Food and Beverage Undisputed 01/23/2026 1086244410 CMS
Bayer Healthcare Pharmaceuticals Inc. $21.32 07/25/2024 Food and Beverage Undisputed 01/23/2026 1086117814 CMS
Bayer Healthcare Pharmaceuticals Inc. $23.60 12/16/2024 Food and Beverage Undisputed 01/23/2026 1086257194 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $32.34 03/07/2024 Food and Beverage Undisputed 01/23/2026 1117958422 CMS
CALLIDITAS THERAPEUTICS US INC. $15.47 01/09/2024 Food and Beverage Undisputed 01/23/2026 1141507744 CMS
CALLIDITAS THERAPEUTICS US INC. $17.50 03/19/2024 Food and Beverage Undisputed 01/23/2026 1141511585 CMS
CALLIDITAS THERAPEUTICS US INC. $28.49 06/24/2024 Food and Beverage Undisputed 01/23/2026 1141517457 CMS
CALLIDITAS THERAPEUTICS US INC. $25.44 10/31/2024 Food and Beverage Undisputed 01/23/2026 1141526010 CMS
Fresenius USA Marketing, Inc. $21.65 02/05/2024 Food and Beverage Undisputed 01/23/2026 1154200322 CMS
Fresenius USA Marketing, Inc. $24.17 03/01/2024 Food and Beverage Undisputed 01/23/2026 1154200330 CMS
Fresenius USA Marketing, Inc. $3.21 03/18/2024 Food and Beverage Undisputed 01/23/2026 1154200316 CMS
Fresenius USA Marketing, Inc. $11.37 03/18/2024 Food and Beverage Undisputed 01/23/2026 1154200318 CMS
Fresenius USA Marketing, Inc. $34.79 04/12/2024 Food and Beverage Undisputed 01/23/2026 1154200332 CMS
Fresenius USA Marketing, Inc. $23.31 04/29/2024 Food and Beverage Undisputed 01/23/2026 1154200328 CMS
Fresenius USA Marketing, Inc. $22.90 07/03/2024 Food and Beverage Undisputed 01/23/2026 1154200326 CMS
Fresenius USA Marketing, Inc. $15.52 07/17/2024 Food and Beverage Undisputed 01/23/2026 1154200320 CMS
Fresenius USA Marketing, Inc. $22.61 08/01/2024 Food and Beverage Undisputed 01/23/2026 1154200324 CMS
GlaxoSmithKline, LLC. $34.62 02/13/2024 Food and Beverage Undisputed 01/23/2026 1116016868 CMS
Lilly USA, LLC $27.85 04/12/2024 Food and Beverage Undisputed 01/23/2026 1135483463 CMS
Lilly USA, LLC $32.91 08/09/2024 Food and Beverage Undisputed 01/23/2026 1135486037 CMS
Lilly USA, LLC $34.94 10/16/2024 Food and Beverage Undisputed 01/23/2026 1135442607 CMS
Lilly USA, LLC $33.44 10/24/2024 Food and Beverage Undisputed 01/23/2026 1135474178 CMS
Mallinckrodt Hospital Products Inc. $30.23 12/12/2024 Food and Beverage Undisputed 01/23/2026 1145056825 CMS
Novartis Pharmaceuticals Corporation $30.99 09/16/2024 Food and Beverage Undisputed 01/23/2026 1086747325 CMS
Novartis Pharmaceuticals Corporation $16.30 10/30/2024 Food and Beverage Undisputed 01/23/2026 1086747327 CMS
Novo Nordisk Inc $19.95 02/17/2024 Food and Beverage Undisputed 01/23/2026 1097819942 CMS
Novo Nordisk Inc $16.86 04/26/2024 Food and Beverage Undisputed 01/23/2026 1097429708 CMS
Novo Nordisk Inc $16.35 05/08/2024 Food and Beverage Undisputed 01/23/2026 1096907221 CMS
Novo Nordisk Inc $15.69 06/04/2024 Food and Beverage Undisputed 01/23/2026 1097255370 CMS
Novo Nordisk Inc $18.82 10/12/2024 Food and Beverage Undisputed 01/23/2026 1097534799 CMS
OPKO Pharmaceuticals, LLC $22.21 12/09/2024 Education Undisputed 01/23/2026 1112843490 CMS
Otsuka America Pharmaceutical, Inc. $92.81 02/15/2024 Food and Beverage Undisputed 01/23/2026 1118874506 CMS
Otsuka America Pharmaceutical, Inc. $24.85 02/24/2024 Food and Beverage Undisputed 01/23/2026 1118874508 CMS
Otsuka America Pharmaceutical, Inc. $27.29 08/21/2024 Food and Beverage Undisputed 01/23/2026 1118874510 CMS
Otsuka America Pharmaceutical, Inc. $27.02 09/19/2024 Food and Beverage Undisputed 01/23/2026 1118874512 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $68.25 10/05/2024 Food and Beverage Undisputed 01/23/2026 1118835997 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $33.41 10/05/2024 Food and Beverage Undisputed 01/23/2026 1118835999 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $69.74 10/05/2024 Food and Beverage Undisputed 01/23/2026 1118836001 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $2,983.75 11/05/2024 Consulting Fee Undisputed 01/23/2026 1118836003 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $48.00 11/05/2024 Travel and Lodging Undisputed 01/23/2026 1118836005 CMS
Otsuka Pharmaceutical Development & Commercialization, Inc. $7.00 11/08/2024 Travel and Lodging Undisputed 01/23/2026 1118836007 CMS
Travere Therapeutics, Inc. $3.08 01/15/2024 Education Undisputed 01/23/2026 1149944606 CMS
Travere Therapeutics, Inc. $34.53 01/16/2024 Food and Beverage Undisputed 01/23/2026 1149944618 CMS
Travere Therapeutics, Inc. $3.08 03/04/2024 Education Undisputed 01/23/2026 1149944610 CMS
Travere Therapeutics, Inc. $26.43 04/19/2024 Food and Beverage Undisputed 01/23/2026 1149944614 CMS

Source & provenance

Dataset
CMS Open Payments — General Payments
Publisher of source data
Centers for Medicare & Medicaid Services
CMS publication date
2026-01-23
Program years on this page
2018, 2019, 2020, 2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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