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

GEORGE KATSAMAKIS

Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology

NPI
1174502835
CMS profile
188771
Location
LAKE BARRINGTON, IL

General Payments · PY2018–2024

$209,814.12

  • Reported across 657 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$12,877.24

110 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 $64,844.74 141
PY2019 $70,055.74 144
PY2020 $23,828.76 45
PY2021 $9,060.67 45
PY2022 $13,680.46 62
PY2023 $15,466.51 110
PY2024 $12,877.24 110

Payment records · PY2024 (110)

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
Abbott Laboratories $20.66 12/31/2024 Food and Beverage Undisputed 01/23/2026 1124881286 CMS
ABBVIE INC. $5.96 01/09/2024 Food and Beverage Undisputed 01/23/2026 1104038878 CMS
ABBVIE INC. $7.02 02/06/2024 Food and Beverage Undisputed 01/23/2026 1104038880 CMS
ABBVIE INC. $7.02 02/27/2024 Food and Beverage Undisputed 01/23/2026 1104038882 CMS
ABBVIE INC. $15.15 03/19/2024 Food and Beverage Undisputed 01/23/2026 1104038884 CMS
ABBVIE INC. $28.64 04/11/2024 Food and Beverage Undisputed 01/23/2026 1104038886 CMS
ABBVIE INC. $21.62 04/16/2024 Food and Beverage Undisputed 01/23/2026 1104038888 CMS
ABBVIE INC. $32.73 05/09/2024 Food and Beverage Undisputed 01/23/2026 1104038890 CMS
ABBVIE INC. $30.75 06/20/2024 Food and Beverage Undisputed 01/23/2026 1104038892 CMS
ABBVIE INC. $31.43 07/18/2024 Food and Beverage Undisputed 01/23/2026 1104038894 CMS
ABBVIE INC. $7.04 08/06/2024 Food and Beverage Undisputed 01/23/2026 1104038896 CMS
ABBVIE INC. $27.65 08/15/2024 Food and Beverage Undisputed 01/23/2026 1104038898 CMS
ABBVIE INC. $6.59 10/01/2024 Food and Beverage Undisputed 01/23/2026 1104038900 CMS
ABBVIE INC. $6.43 10/29/2024 Food and Beverage Undisputed 01/23/2026 1104038902 CMS
Alexion Pharmaceuticals, Inc. $31.21 02/08/2024 Food and Beverage Undisputed 01/23/2026 1093958605 CMS
Amgen Inc. $18.13 03/20/2024 Food and Beverage Undisputed 01/23/2026 1111615473 CMS
Amgen Inc. $20.13 06/19/2024 Food and Beverage Undisputed 01/23/2026 1111615475 CMS
Amgen Inc. $20.83 07/02/2024 Food and Beverage Undisputed 01/23/2026 1111615477 CMS
Amgen Inc. $24.47 08/13/2024 Food and Beverage Undisputed 01/23/2026 1111615479 CMS
Amgen Inc. $26.69 12/05/2024 Food and Beverage Undisputed 01/23/2026 1111615481 CMS
Amylyx Pharmaceuticals, Inc. $18.33 01/25/2024 Food and Beverage Undisputed 01/23/2026 1148254247 CMS
Ares Trading SA $7,297.00 10/25/2024 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program Undisputed 01/23/2026 1133237793 CMS
ARGENX US, INC. $21.06 06/28/2024 Food and Beverage Undisputed 01/23/2026 1142111931 CMS
Biogen, Inc. $28.09 01/10/2024 Food and Beverage Undisputed 01/23/2026 1104876252 CMS
Biogen, Inc. $26.59 01/29/2024 Food and Beverage Undisputed 01/23/2026 1104823374 CMS
Biogen, Inc. $23.13 01/31/2024 Food and Beverage Undisputed 01/23/2026 1104824566 CMS
Biogen, Inc. $27.53 03/15/2024 Food and Beverage Undisputed 01/23/2026 1104813331 CMS
Biogen, Inc. $14.81 06/29/2024 Food and Beverage Undisputed 01/23/2026 1104841107 CMS
Biogen, Inc. $21.56 08/07/2024 Food and Beverage Undisputed 01/23/2026 1104807807 CMS
Biogen, Inc. $20.35 11/06/2024 Food and Beverage Undisputed 01/23/2026 1104877456 CMS
Biogen, Inc. $22.76 12/11/2024 Food and Beverage Undisputed 01/23/2026 1104815569 CMS
CATALYST PHARMACEUTICALS, INC. $35.57 04/08/2024 Food and Beverage Undisputed 01/23/2026 1144444374 CMS
Celgene Corporation $31.99 04/04/2024 Food and Beverage Undisputed 01/23/2026 1101159982 CMS
Celgene Corporation $33.34 06/12/2024 Food and Beverage Undisputed 01/23/2026 1101159986 CMS
Celgene Corporation $5.60 07/11/2024 Food and Beverage Undisputed 01/23/2026 1101159990 CMS
Celgene Corporation $33.46 07/17/2024 Food and Beverage Undisputed 01/23/2026 1101159988 CMS
Celgene Corporation $33.94 11/05/2024 Food and Beverage Undisputed 01/23/2026 1101159994 CMS
Celgene Corporation $31.47 12/10/2024 Food and Beverage Undisputed 01/23/2026 1101160000 CMS
Eisai Inc. $21.74 03/28/2024 Food and Beverage Undisputed 01/23/2026 1110746630 CMS
Eisai Inc. $21.86 05/16/2024 Food and Beverage Undisputed 01/23/2026 1110746632 CMS
EMD Serono, Inc. $31.52 02/06/2024 Food and Beverage Undisputed 01/23/2026 1120238668 CMS
EMD Serono, Inc. $94.84 03/13/2024 Food and Beverage Undisputed 01/23/2026 1120231968 CMS
EMD Serono, Inc. $2,780.00 03/18/2024 Consulting Fee Undisputed 01/23/2026 1120275246 CMS
EMD Serono, Inc. $31.64 04/25/2024 Food and Beverage Undisputed 01/23/2026 1120238670 CMS
EMD Serono, Inc. $10.46 05/25/2024 Food and Beverage Undisputed 01/23/2026 1120248455 CMS
EMD Serono, Inc. $32.33 06/04/2024 Food and Beverage Undisputed 01/23/2026 1120247839 CMS
EMD Serono, Inc. $144.54 07/15/2024 Food and Beverage Undisputed 01/23/2026 1120217958 CMS
EMD Serono, Inc. $149.89 08/28/2024 Food and Beverage Undisputed 01/23/2026 1120256255 CMS
EMD Serono, Inc. $4.81 10/22/2024 Food and Beverage Undisputed 01/23/2026 1120266668 CMS
EMD Serono, Inc. $51.31 10/26/2024 Food and Beverage Undisputed 01/23/2026 1120266730 CMS
EMD Serono, Inc. $22.88 11/21/2024 Food and Beverage Undisputed 01/23/2026 1120265537 CMS
Genentech USA, Inc. $23.11 02/14/2024 Food and Beverage Undisputed 01/23/2026 1133014258 CMS
Genentech USA, Inc. $25.23 05/08/2024 Food and Beverage Undisputed 01/23/2026 1133014262 CMS
Genentech USA, Inc. $25.07 07/30/2024 Food and Beverage Undisputed 01/23/2026 1133014266 CMS
Genentech USA, Inc. $24.36 10/23/2024 Food and Beverage Undisputed 01/23/2026 1133014254 CMS
Inspire Medical Systems, Inc. $160.62 07/18/2024 Food and Beverage Undisputed 01/23/2026 1148065837 CMS
Lilly USA, LLC $28.91 06/10/2024 Food and Beverage Undisputed 01/23/2026 1134997870 CMS
Lilly USA, LLC $27.65 11/27/2024 Food and Beverage Undisputed 01/23/2026 1134985144 CMS
Lilly USA, LLC $30.32 12/12/2024 Food and Beverage Undisputed 01/23/2026 1135004759 CMS
Lundbeck LLC $25.25 02/06/2024 Food and Beverage Undisputed 01/23/2026 1145931911 CMS
Lundbeck LLC $22.67 04/22/2024 Food and Beverage Undisputed 01/23/2026 1145931913 CMS
Lundbeck LLC $26.84 06/17/2024 Food and Beverage Undisputed 01/23/2026 1145931915 CMS
MDD US Operations, LLC $38.81 04/02/2024 Food and Beverage Undisputed 01/23/2026 1147768181 CMS
Merz Pharmaceuticals, LLC $31.95 12/18/2024 Food and Beverage Undisputed 01/23/2026 1137949254 CMS
Novartis Pharmaceuticals Corporation $2.90 02/13/2024 Food and Beverage Undisputed 01/23/2026 1087022646 CMS
Novartis Pharmaceuticals Corporation $27.18 02/21/2024 Food and Beverage Undisputed 01/23/2026 1087022648 CMS
Novartis Pharmaceuticals Corporation $4.99 05/09/2024 Food and Beverage Undisputed 01/23/2026 1087022650 CMS
Novartis Pharmaceuticals Corporation $5.42 05/15/2024 Food and Beverage Undisputed 01/23/2026 1087022652 CMS
Novartis Pharmaceuticals Corporation $34.77 05/15/2024 Food and Beverage Undisputed 01/23/2026 1087022656 CMS
Novartis Pharmaceuticals Corporation $5.74 06/27/2024 Food and Beverage Undisputed 01/23/2026 1087022654 CMS
Novartis Pharmaceuticals Corporation $2.68 08/14/2024 Food and Beverage Undisputed 01/23/2026 1087022658 CMS
Novartis Pharmaceuticals Corporation $5.00 09/13/2024 Food and Beverage Undisputed 01/23/2026 1087022660 CMS
Novartis Pharmaceuticals Corporation $7.47 09/13/2024 Food and Beverage Undisputed 01/23/2026 1087022662 CMS
Novartis Pharmaceuticals Corporation $11.34 09/24/2024 Food and Beverage Undisputed 01/23/2026 1087022664 CMS
Novartis Pharmaceuticals Corporation $16.38 11/20/2024 Food and Beverage Undisputed 01/23/2026 1087022666 CMS
Novartis Pharmaceuticals Corporation $33.24 11/20/2024 Food and Beverage Undisputed 01/23/2026 1087022668 CMS
Novartis Pharmaceuticals Corporation $9.52 12/06/2024 Food and Beverage Undisputed 01/23/2026 1087022672 CMS
Novartis Pharmaceuticals Corporation $10.78 12/17/2024 Food and Beverage Undisputed 01/23/2026 1087022670 CMS
PFIZER INC. $18.78 01/23/2024 Food and Beverage Undisputed 01/23/2026 1131107070 CMS
PFIZER INC. $19.89 01/24/2024 Food and Beverage Undisputed 01/23/2026 1131102493 CMS
PFIZER INC. $9.07 02/02/2024 Food and Beverage Undisputed 01/23/2026 1131700496 CMS
PFIZER INC. $13.49 02/21/2024 Food and Beverage Undisputed 01/23/2026 1131124598 CMS
PFIZER INC. $2.51 02/22/2024 Food and Beverage Undisputed 01/23/2026 1131700498 CMS
PFIZER INC. $24.17 03/11/2024 Food and Beverage Undisputed 01/23/2026 1131124594 CMS
PFIZER INC. $8.76 05/02/2024 Food and Beverage Undisputed 01/23/2026 1131580546 CMS
PFIZER INC. $1.55 06/28/2024 Food and Beverage Undisputed 01/23/2026 1131684935 CMS
PFIZER INC. $25.32 07/04/2024 Food and Beverage Undisputed 01/23/2026 1131687851 CMS
PFIZER INC. $27.73 07/11/2024 Food and Beverage Undisputed 01/23/2026 1131612527 CMS
PFIZER INC. $20.33 09/30/2024 Food and Beverage Undisputed 01/23/2026 1131959860 CMS
PFIZER INC. $27.90 11/13/2024 Food and Beverage Undisputed 01/23/2026 1132113297 CMS
Takeda Pharmaceuticals U.S.A., Inc. $25.94 02/15/2024 Food and Beverage Undisputed 01/23/2026 1137596490 CMS
Takeda Pharmaceuticals U.S.A., Inc. $22.92 06/06/2024 Food and Beverage Undisputed 01/23/2026 1137596494 CMS
Teva Pharmaceuticals USA, Inc. $29.46 04/02/2024 Food and Beverage Undisputed 01/23/2026 1151554556 CMS
TG Therapeutics, Inc. $12.35 01/05/2024 Food and Beverage Undisputed 01/23/2026 1136889852 CMS
TG Therapeutics, Inc. $11.33 02/02/2024 Food and Beverage Undisputed 01/23/2026 1136889854 CMS
TG Therapeutics, Inc. $24.96 02/07/2024 Food and Beverage Undisputed 01/23/2026 1136889856 CMS
TG Therapeutics, Inc. $20.07 02/16/2024 Food and Beverage Undisputed 01/23/2026 1136889860 CMS
TG Therapeutics, Inc. $16.77 04/05/2024 Food and Beverage Undisputed 01/23/2026 1136889884 CMS
TG Therapeutics, Inc. $24.17 04/10/2024 Food and Beverage Undisputed 01/23/2026 1136889880 CMS
TG Therapeutics, Inc. $28.57 04/12/2024 Food and Beverage Undisputed 01/23/2026 1136890000 CMS
TG Therapeutics, Inc. $18.41 05/17/2024 Food and Beverage Undisputed 01/23/2026 1136889886 CMS
TG Therapeutics, Inc. $18.39 07/19/2024 Food and Beverage Undisputed 01/23/2026 1136889924 CMS
TG Therapeutics, Inc. $7.40 08/16/2024 Food and Beverage Undisputed 01/23/2026 1136889910 CMS
TG Therapeutics, Inc. $19.92 09/05/2024 Food and Beverage Undisputed 01/23/2026 1136889922 CMS
TG Therapeutics, Inc. $25.00 09/20/2024 Food and Beverage Undisputed 01/23/2026 1136889892 CMS
TG Therapeutics, Inc. $34.27 10/17/2024 Food and Beverage Undisputed 01/23/2026 1136890012 CMS
TG Therapeutics, Inc. $19.37 12/11/2024 Food and Beverage Undisputed 01/23/2026 1136889978 CMS
TG Therapeutics, Inc. $71.04 12/11/2024 Food and Beverage Undisputed 01/23/2026 1136890020 CMS
UCB, Inc. $32.27 06/13/2024 Food and Beverage Undisputed 01/23/2026 1143196938 CMS
UCB, Inc. $32.38 08/08/2024 Food and Beverage Undisputed 01/23/2026 1143196943 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

One page per canonical provider; split Profile_IDs are merged via Associated_Covered_Recipient_Profile_ID_1/_2 from the Covered Recipient Profile Supplement.

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