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

HAN-CHENG CHEN

Allopathic & Osteopathic Physicians Internal Medicine

NPI
1912387796
CMS profile
1342568
Location
SAN FRANCISCO, CA

General Payments · PY2021

$609.45

  • Reported across 28 records
  • CMS publication 2026-01-23

Latest program year · PY2021

$609.45

28 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.

By nature of payment

PY2021 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $510.45 27
Education $99.00 1

By paying entity

PY2021 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $609.45 28

Payment records · PY2021 (28)

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

Program year 2021
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Amgen Inc. $22.27 03/10/2021 Food and Beverage Undisputed 01/23/2026 826344775 CMS
Amgen Inc. $24.66 04/14/2021 Food and Beverage Undisputed 01/23/2026 826344779 CMS
Amgen Inc. $20.39 08/04/2021 Food and Beverage Undisputed 01/23/2026 826344783 CMS
AstraZeneca Pharmaceuticals LP $13.52 01/13/2021 Food and Beverage Undisputed 01/23/2026 830040527 CMS
AstraZeneca Pharmaceuticals LP $28.05 02/09/2021 Food and Beverage Undisputed 01/23/2026 829684491 CMS
AstraZeneca Pharmaceuticals LP $19.16 02/17/2021 Food and Beverage Undisputed 01/23/2026 830068865 CMS
AstraZeneca Pharmaceuticals LP $18.92 03/03/2021 Food and Beverage Undisputed 01/23/2026 830195217 CMS
AstraZeneca Pharmaceuticals LP $14.51 05/26/2021 Food and Beverage Undisputed 01/23/2026 830177347 CMS
AstraZeneca Pharmaceuticals LP $19.23 06/03/2021 Food and Beverage Undisputed 01/23/2026 829491925 CMS
AstraZeneca Pharmaceuticals LP $15.84 06/23/2021 Food and Beverage Undisputed 01/23/2026 830275291 CMS
AstraZeneca Pharmaceuticals LP $99.00 08/09/2021 Education Undisputed 01/23/2026 829702869 CMS
AstraZeneca Pharmaceuticals LP $18.13 08/18/2021 Food and Beverage Undisputed 01/23/2026 829773373 CMS
Aurinia Pharma U.S., Inc. $22.09 11/16/2021 Food and Beverage Undisputed 01/23/2026 841393733 CMS
Fresenius USA Marketing, Inc. $17.02 03/30/2021 Food and Beverage Undisputed 01/23/2026 849427197 CMS
Fresenius USA Marketing, Inc. $11.88 06/30/2021 Food and Beverage Undisputed 01/23/2026 849427185 CMS
Fresenius USA Marketing, Inc. $13.74 08/10/2021 Food and Beverage Undisputed 01/23/2026 849427189 CMS
Fresenius USA Marketing, Inc. $14.66 08/25/2021 Food and Beverage Undisputed 01/23/2026 849427193 CMS
GlaxoSmithKline, LLC. $17.89 04/07/2021 Food and Beverage Undisputed 01/23/2026 802902029 CMS
GlaxoSmithKline, LLC. $22.23 09/29/2021 Food and Beverage Undisputed 01/23/2026 802543323 CMS
Horizon Therapeutics plc $19.90 05/12/2021 Food and Beverage Undisputed 01/23/2026 797095581 CMS
Horizon Therapeutics plc $23.45 09/21/2021 Food and Beverage Undisputed 01/23/2026 797095585 CMS
Janssen Pharmaceuticals, Inc $17.16 07/28/2021 Food and Beverage Undisputed 01/23/2026 788815759 CMS
Otsuka America Pharmaceutical, Inc. $20.72 03/24/2021 Food and Beverage Undisputed 01/23/2026 834720921 CMS
Otsuka America Pharmaceutical, Inc. $18.65 04/28/2021 Food and Beverage Undisputed 01/23/2026 834720923 CMS
Otsuka America Pharmaceutical, Inc. $20.05 06/02/2021 Food and Beverage Undisputed 01/23/2026 834720925 CMS
Vifor Pharma, Inc. $16.51 04/01/2021 Food and Beverage Undisputed 01/23/2026 816099859 CMS
Vifor Pharma, Inc. $18.17 09/01/2021 Food and Beverage Undisputed 01/23/2026 816126537 CMS
Vifor Pharma, Inc. $21.65 10/20/2021 Food and Beverage Undisputed 01/23/2026 816135519 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
2021
Source files
Dataset page · Bulk file · PY2021
Generated from
OP_DTL_GNRL_PGYR2021_P01232026_01102026.csv

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