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

AN PANG CHIENG

Allopathic & Osteopathic Physicians Internal Medicine

NPI
1821030305
CMS profile
218116
Location
LOS ANGELES, CA

General Payments · PY2018–2024

$4,520.50

  • Reported across 171 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$312.38

13 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

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $312.38 13

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $1,648.96 43
PY2019 $858.06 47
PY2020 $211.63 11
PY2021 $558.12 24
PY2022 $339.65 17
PY2023 $591.70 16
PY2024 $312.38 13

Payment records · PY2024 (13)

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. $35.07 02/19/2024 Food and Beverage Undisputed 01/23/2026 1117223086 CMS
AstraZeneca Pharmaceuticals LP $22.00 04/09/2024 Food and Beverage Undisputed 01/23/2026 1105757371 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $23.16 02/06/2024 Food and Beverage Undisputed 01/23/2026 1118166888 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $30.36 11/11/2024 Food and Beverage Undisputed 01/23/2026 1118166890 CMS
GlaxoSmithKline, LLC. $14.54 10/15/2024 Food and Beverage Undisputed 01/23/2026 1116129372 CMS
Kyowa Kirin, Inc. $17.43 02/15/2024 Food and Beverage Undisputed 01/23/2026 1127024864 CMS
Kyowa Kirin, Inc. $15.99 12/19/2024 Food and Beverage Undisputed 01/23/2026 1127024866 CMS
Lilly USA, LLC $30.56 04/08/2024 Food and Beverage Undisputed 01/23/2026 1136038509 CMS
Merck Sharp & Dohme LLC $26.29 04/04/2024 Food and Beverage Undisputed 01/23/2026 1141943997 CMS
Merck Sharp & Dohme LLC $25.08 09/05/2024 Food and Beverage Undisputed 01/23/2026 1141795176 CMS
PFIZER INC. $18.06 06/24/2024 Food and Beverage Undisputed 01/23/2026 1132015268 CMS
PFIZER INC. $18.94 12/02/2024 Food and Beverage Undisputed 01/23/2026 1131259464 CMS
SANOFI PASTEUR INC. $34.90 05/10/2024 Food and Beverage Undisputed 01/23/2026 1128754369 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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