Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-06-30 View official record Methodology

Covered recipient · General Payments record

NICHOLAS KARJUN CHAN

Allopathic & Osteopathic Physicians Ophthalmology

NPI
1396132403
CMS profile
4227283
Location
OAK LAWN, IL

General Payments · PY2021–2025

$4,319.43

  • Reported across 139 records
  • CMS publication 2026-06-30

Latest program year · PY2025

$1,055.36

36 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

PY2025 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,016.50 35
Honoraria $38.86 1

By paying entity

PY2025 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $252.19 5
PY2022 $1,055.88 34
PY2023 $708.39 28
PY2024 $1,247.61 36
PY2025 $1,055.36 36

Payment records · PY2025 (36)

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

Program year 2025 2021202220232024 Record-level detail is published for PY2025; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Alcon Vision LLC $37.50 02/07/2025 Food and Beverage Undisputed 06/30/2026 1207505237 CMS
Alcon Vision LLC $20.25 02/13/2025 Food and Beverage Undisputed 06/30/2026 1207505233 CMS
Alcon Vision LLC $136.87 02/19/2025 Food and Beverage Undisputed 06/30/2026 1207505235 CMS
Alcon Vision LLC $13.96 07/16/2025 Food and Beverage Undisputed 06/30/2026 1207505329 CMS
Alcon Vision LLC $7.47 09/09/2025 Food and Beverage Undisputed 06/30/2026 1207505361 CMS
Alcon Vision LLC $16.41 09/23/2025 Food and Beverage Undisputed 06/30/2026 1207505347 CMS
Alcon Vision LLC $108.07 10/28/2025 Food and Beverage Undisputed 06/30/2026 1207505403 CMS
ANI Pharmaceuticals, Inc. $26.72 01/17/2025 Food and Beverage Undisputed 06/30/2026 1248638409 CMS
ANI Pharmaceuticals, Inc. $20.97 10/02/2025 Food and Beverage Undisputed 06/30/2026 1248611611 CMS
ANI Pharmaceuticals, Inc. $17.77 10/22/2025 Food and Beverage Undisputed 06/30/2026 1248647147 CMS
ANI Pharmaceuticals, Inc. $15.26 12/20/2025 Food and Beverage Undisputed 06/30/2026 1248657914 CMS
Bausch & Lomb Americas Inc. $21.82 08/08/2025 Food and Beverage Undisputed 06/30/2026 1254858888 CMS
Bausch & Lomb Americas Inc. $25.00 09/10/2025 Food and Beverage Undisputed 06/30/2026 1254858886 CMS
Dompe US, Inc. $26.12 07/08/2025 Food and Beverage Undisputed 06/30/2026 1248879077 CMS
Harrow Eye, LLC $19.29 02/06/2025 Food and Beverage Undisputed 06/30/2026 1236214861 CMS
Harrow Eye, LLC $34.05 04/07/2025 Food and Beverage Undisputed 06/30/2026 1236214863 CMS
Harrow Eye, LLC $39.02 08/07/2025 Food and Beverage Undisputed 06/30/2026 1236214865 CMS
Harrow Eye, LLC $21.46 08/08/2025 Food and Beverage Undisputed 06/30/2026 1236214867 CMS
Harrow Eye, LLC $32.41 11/26/2025 Food and Beverage Undisputed 06/30/2026 1236214869 CMS
Johnson & Johnson Surgical Vision, Inc. $16.01 03/20/2025 Food and Beverage Undisputed 06/30/2026 1173810521 CMS
Mallinckrodt Hospital Products Inc. $32.51 02/12/2025 Food and Beverage Undisputed 06/30/2026 1211956853 CMS
Mallinckrodt Hospital Products Inc. $29.80 03/20/2025 Food and Beverage Undisputed 06/30/2026 1211956855 CMS
Mallinckrodt Hospital Products Inc. $32.25 04/15/2025 Food and Beverage Undisputed 06/30/2026 1211956857 CMS
Mallinckrodt Hospital Products Inc. $27.53 08/12/2025 Food and Beverage Undisputed 06/30/2026 1211956859 CMS
NEW WORLD MEDICAL,INC. $16.66 05/14/2025 Food and Beverage Undisputed 06/30/2026 1251340619 CMS
NEW WORLD MEDICAL,INC. $21.11 07/24/2025 Food and Beverage Undisputed 06/30/2026 1251341676 CMS
NEW WORLD MEDICAL,INC. $3.87 09/19/2025 Food and Beverage Undisputed 06/30/2026 1251342605 CMS
Rayner Intraocular Lenses Limited $28.30 02/06/2025 Food and Beverage Undisputed 06/30/2026 1211224529 CMS
Rayner Intraocular Lenses Limited $28.67 03/10/2025 Food and Beverage Undisputed 06/30/2026 1211224657 CMS
RxSight Inc $38.86 05/29/2025 Honoraria Undisputed 06/30/2026 1251702045 CMS
Sight Sciences, Inc. $21.40 05/21/2025 Food and Beverage Undisputed 06/30/2026 1244657804 CMS
Sight Sciences, Inc. $24.71 06/10/2025 Food and Beverage Undisputed 06/30/2026 1244657806 CMS
Sight Sciences, Inc. $21.94 10/07/2025 Food and Beverage Undisputed 06/30/2026 1244662314 CMS
SUN PHARMACEUTICAL INDUSTRIES INC. $19.41 05/13/2025 Food and Beverage Undisputed 06/30/2026 1251042019 CMS
Tarsus Pharmaceuticals, Inc. $23.16 09/02/2025 Food and Beverage Undisputed 06/30/2026 1233839644 CMS
Tarsus Pharmaceuticals, Inc. $28.75 10/14/2025 Food and Beverage Undisputed 06/30/2026 1233839646 CMS

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
2021, 2022, 2023, 2024, 2025
Source files
Dataset page · Bulk file · PY2021 , PY2022 , PY2023 , PY2024 , PY2025
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.csv

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