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

LIN CHANG

Allopathic & Osteopathic Physicians Internal Medicine Gastroenterology

NPI
1770518557
CMS profile
262152
Location
LOS ANGELES, CA

General Payments · PY2018–2024

$90,953.83

  • Reported across 83 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$7,197.47

7 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

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $19,976.97 29
PY2019 $30,598.90 16
PY2020 $6,966.00 2
PY2021 $5,922.78 4
PY2022 $16,047.04 12
PY2023 $4,244.67 13
PY2024 $7,197.47 7

Payment records · PY2024 (7)

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
Ardelyx, Inc. $146.05 10/27/2024 Food and Beverage Undisputed 01/23/2026 1146674658 CMS
GlaxoSmithKline, LLC. $5,600.00 11/21/2024 Consulting Fee Undisputed 01/23/2026 1116699727 CMS
Madrigal Pharmaceuticals $97.73 10/11/2024 Food and Beverage Undisputed 01/23/2026 1144163119 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $99.96 04/09/2024 Food and Beverage Undisputed 01/23/2026 1153693370 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $1,125.00 04/17/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1153570684 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $108.12 06/11/2024 Food and Beverage Undisputed 01/23/2026 1153502898 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $20.61 12/03/2024 Food and Beverage Undisputed 01/23/2026 1153570656 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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