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

Covered recipient · General Payments record

GEORGE KATSAMAKIS

Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology

NPI
1174502835
CMS profile
188771
Location
LAKE BARRINGTON, IL

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

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General Payments · PY2022 · Entire year

$13,680.46

62 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“Financial relationships do not necessarily indicate an improper relationship; the data is open to interpretation.”

— Centers for Medicare & Medicaid Services, Open Payments

A reported payment reflects a financial relationship a company disclosed. It does not indicate wrongdoing or a conflict of interest, and it says nothing about the quality of a provider's care.

These records are submitted to CMS and attested to by the reporting companies. CMS publishes them as reported; this site mirrors them without independent verification.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

How these totals are calculated
  • This total is the sum of the individual General Payments record amounts CMS published for the labeled program year(s); each record amount is used unmodified. The total itself is computed by this site. 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.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . CMS updates this data on an annual cycle, and corrections or successful disputes made at CMS may not yet appear here. The official CMS record is authoritative for the current state. View the official CMS record ↗

By nature of payment

PY2022 · entire year · sorted by reported total

By paying entity

PY2022 · entire year · sorted by reported total

Page 1 of 2; records 1–50 of 62 matching records. This page contains 50 records (maximum 50), not the full filtered export. Use the CSV download for all matching records.

IndustryPayments · General Payments

GEORGE KATSAMAKIS

NPI 1174502835 · CMS profile ID 188771

Allopathic & Osteopathic Physicians / Psychiatry & Neurology / Neurology

LAKE BARRINGTON, IL

A name match is not confirmation of identity. CMS publishes records for different people under similar names; the NPI, specialty, and location shown on this page are the CMS-published fields that distinguish them.

A payment attributed to a provider may have been made to a third party — a hospital, practice, or research institution — rather than paid to the provider personally.

General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types

Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00

Page 1 of 2; records 1–50 of 62 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1174502835?year=2022&recipient=provider#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c

Cite these filtered records

The citation includes this program year, filters, data edition, and page of results.

Plain
GEORGE KATSAMAKIS, NPI 1174502835, CMS profile ID 188771. General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 2; records 1–50 of 62 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1174502835?year=2022&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c.
APA 7
IndustryPayments. (2026). GEORGE KATSAMAKIS, NPI 1174502835, CMS profile ID 188771. General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types. Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00. Page 1 of 2; records 1–50 of 62 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1174502835?year=2022&recipient=provider#records-h. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c.
Bluebook
GEORGE KATSAMAKIS, NPI 1174502835, CMS profile ID 188771, IndustryPayments, General Payments, PY2022; Recipient scope: Physicians and non-physician practitioners; Reporting company: All reporting companies; Nature of payment: All payment types (Data edition: cms-20260630-workflow-20261105-v2; CMS publication: 2026-06-30; records imported: 2026-11-05T09:06:52.159882+00:00). Page 1 of 2; records 1–50 of 62 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/df01c2f8-dc1f-4e79-96cb-8208beaf143c. https://industrypayments.org/provider/npi-1174502835?year=2022&recipient=provider#records-h.

Centers for Medicare & Medicaid Services, Open Payments

Citation formats are provided for reference; check the requirements of your publication.

Payment records · PY2022

Ordering applied by this site (date, newest first, then paying entity) · record values are shown as CMS published them

General Payments · PY2022 · Physicians and non-physician practitioners · CMS publication 2026-06-30

62 matching records · $13,680.46 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 62 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 62.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
EMD Serono, Inc. $1,320.0012/16/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941578009 CMS
Genentech USA, Inc. $19.7012/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950718995 CMS
Biogen, Inc. $78.0112/15/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923438655 CMS
Horizon Therapeutics plc $16.6012/12/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 937641457 CMS
Biohaven Pharmaceutical Holding Company Ltd. $27.5412/06/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923633661 CMS
Merck KGaA $1,760.0011/10/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 940342629 CMS
Genentech USA, Inc. $24.7111/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950743371 CMS
GENZYME CORPORATION $110.0011/03/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 938883793 CMS
Celgene Corporation $18.5511/02/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932828337 CMS
EMD Serono, Inc. $18.6610/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941572197 CMS
Biogen, Inc. $145.9010/27/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923426733 CMS
Genentech USA, Inc. $36.7510/26/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950646787 CMS
Genentech USA, Inc. $20.1610/13/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950751859 CMS
Novartis Pharmaceuticals Corporation $15.3610/13/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 893816765 CMS
Biogen, Inc. $14.1310/06/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923397277 CMS
Banner Life Sciences, LLC $22.0610/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 957722215 CMS
Biogen, Inc. $22.5309/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923444095 CMS
Alnylam Pharmaceuticals Inc. $77.8809/22/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 926091575 CMS
Novartis Pharmaceuticals Corporation $23.1909/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 893816761 CMS
ABBVIE INC. $21.9209/01/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 893024075 CMS
Genentech USA, Inc. $29.2908/24/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950698493 CMS
LivaNova USA, Inc. $27.0308/23/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 942209467 CMS
Horizon Therapeutics plc $23.1308/17/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 937641455 CMS
Abbott Laboratories $140.5808/12/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 914150915 CMS
EMD Serono, Inc. $20.0608/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941546365 CMS
Celgene Corporation $28.3907/29/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932828265 CMS
Celgene Corporation $19.1907/28/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932828249 CMS
EMD Serono, Inc. $26.3507/20/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941539931 CMS
Biogen, Inc. $24.7907/12/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923411915 CMS
EMD Serono, Inc. $1,320.0007/12/2022 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941536569 CMS
Horizon Therapeutics plc $16.2406/30/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 937641453 CMS
Acorda Therapeutics, Inc $17.8006/22/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 920334039 CMS
Genentech USA, Inc. $10.0406/21/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950715331 CMS
Banner Life Sciences, LLC $30.7206/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 957720293 CMS
ABBVIE INC. $12.5006/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 893024071 CMS
Biogen, Inc. $24.9406/08/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923448031 CMS
Novartis Pharmaceuticals Corporation $17.0805/18/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 893816757 CMS
Abbott Laboratories $19.2105/16/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 920402589 CMS
ABBVIE INC. $11.7905/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 893024067 CMS
Genentech USA, Inc. $23.1305/04/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 950778961 CMS
Collegium Pharmaceutical, Inc. $15.2305/03/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 914579905 CMS
GENZYME CORPORATION $14.6504/26/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 938883763 CMS
EMD Serono, Inc. $5,280.0004/15/2022 Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941505675 CMS
E.R. Squibb & Sons, L.L.C. $87.7304/14/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 932828245 CMS
GENZYME CORPORATION $9.3304/12/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 938883759 CMS
Biogen, Inc. $3.7903/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923399293 CMS
Biogen, Inc. $21.9503/09/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 923442743 CMS
EMD Serono, Inc. $49.6603/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941497827 CMS
EMD Serono, Inc. $87.8803/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941497967 CMS
EMD Serono, Inc. $26.0003/05/2022 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026 941498197 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
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 $28,754.16 114
PY2025 $29,088.04 138

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
2019, 2020, 2021, 2022, 2023, 2024, 2025
Source files and profile matching
Generated from
OP_DTL_GNRL_PGYR2025_P06302026_06032026.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.

Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.