Covered recipient · General Payments record

BRIAN M KARASZEWSKI

Allopathic & Osteopathic Physicians Internal Medicine

NPI: 1255478376
CMS profile: 283689
Location: WILLIAMSVILLE, NY

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.

Saved items

Saved only in this browser. No account or alerts.

Filter and download payment records

General Payments · PY2021 · Entire year

$4,189.60

254 records · 0 disputed

Summary and payment records

CMS publication 2026-06-30

Read the payment records

“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 July 26, 2026. 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

PY2021 · entire year · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$4,014.62	252
Education	$174.98	2

By paying entity

PY2021 · entire year · sorted by reported total

Paying entity	Amount	Records
Boehringer Ingelheim Pharmaceuticals, Inc.	$585.40	39
PFIZER INC.	$365.78	22
Astellas Pharma US Inc	$345.39	12
Amgen Inc.	$300.69	17
GlaxoSmithKline, LLC.	$272.02	17
Lilly USA, LLC	$268.42	22
AstraZeneca Pharmaceuticals LP	$173.93	11
Amarin Pharma Inc.	$165.06	12
Takeda Pharmaceuticals U.S.A., Inc.	$132.80	8
Novo Nordisk Inc	$124.63	9
Kowa Pharmaceuticals America, Inc.	$123.52	7
AbbVie Inc.	$120.86	5
SANOFI-AVENTIS U.S. LLC	$119.65	9
Merck Sharp & Dohme Corporation	$116.42	8
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$103.31	6
Aurinia Pharma U.S., Inc.	$100.36	5
Janssen Pharmaceuticals, Inc	$99.08	8
UCB, Inc.	$97.87	5
Janssen Biotech, Inc.	$94.96	7
Vanda Pharmaceuticals Inc.	$89.85	4
E.R. Squibb & Sons, L.L.C.	$87.35	5
Radius Health, Inc.	$80.10	3
Novartis Pharmaceuticals Corporation	$55.31	3
Daiichi Sankyo Inc.	$32.76	2
Bayer HealthCare Pharmaceuticals Inc.	$29.48	2
Medtronic, Inc.	$29.00	1
Supernus Pharmaceuticals, Inc.	$28.20	2
Grifols USA, LLC	$19.61	1
Eisai Inc.	$14.93	1
Mylan Specialty L.P.	$12.86	1

Page 3 of 6; records 101–150 of 254 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

BRIAN M KARASZEWSKI

NPI 1255478376 · CMS profile ID 283689

Allopathic & Osteopathic Physicians / Internal Medicine

WILLIAMSVILLE, NY

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, PY2021; 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 3 of 6; records 101–150 of 254 matching records. This page contains 50 records (maximum 50), not the full filtered export.

Filtered page: https://industrypayments.org/provider/npi-1255478376?year=2021&recipient=provider&page=3#records-h

CMS source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202

Cite these filtered records

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

Plain: BRIAN M KARASZEWSKI, NPI 1255478376, CMS profile ID 283689. General Payments, PY2021; 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 3 of 6; records 101–150 of 254 matching records. This page contains 50 records (maximum 50), not the full filtered export. IndustryPayments. https://industrypayments.org/provider/npi-1255478376?year=2021&recipient=provider&page=3#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
APA 7: IndustryPayments. (2026). BRIAN M KARASZEWSKI, NPI 1255478376, CMS profile ID 283689. General Payments, PY2021; 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 3 of 6; records 101–150 of 254 matching records. This page contains 50 records (maximum 50), not the full filtered export. [Filtered data set page]. https://industrypayments.org/provider/npi-1255478376?year=2021&recipient=provider&page=3#records-h. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202.
Bluebook: BRIAN M KARASZEWSKI, NPI 1255478376, CMS profile ID 283689, IndustryPayments, General Payments, PY2021; 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 3 of 6; records 101–150 of 254 matching records. This page contains 50 records (maximum 50), not the full filtered export. Source: https://openpaymentsdata.cms.gov/dataset/0380bbeb-aea1-58b6-b708-829f92a48202. https://industrypayments.org/provider/npi-1255478376?year=2021&recipient=provider&page=3#records-h.

Centers for Medicare & Medicaid Services, Open Payments

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

General Payments only. Research Payments and Ownership/Investment Interests are separate datasets and are not included.

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

Centers for Medicare & Medicaid Services, Open Payments

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.

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.

IndustryPayments.org is not a consumer reporting agency as defined by the Fair Credit Reporting Act. Do not use this site to determine any person's eligibility for employment, credentialing, insurance, credit, housing, or any other purpose covered by the FCRA.

Methodology: https://industrypayments.org/methodology

Payment records · PY2021

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

Reporting company Nature of payment

General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

254 matching records · $4,189.60 reported total · 0 disputed

Nature of payment: All payment types

Records imported here November 5, 2026 (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 254 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 101–150 of 254.

Paying entity	Amount	Date	Nature of payment	Dispute status	Publication flags	Published	Record ID	Source
Merck Sharp & Dohme Corporation	$17.79	07/30/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	848432661	CMS
E.R. Squibb & Sons, L.L.C.	$13.62	07/29/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783447783	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$16.73	07/28/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	820008223	CMS
Amgen Inc.	$22.35	07/27/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	825191709	CMS
AstraZeneca Pharmaceuticals LP	$11.77	07/23/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829733661	CMS
PFIZER INC.	$29.25	07/23/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	833389709	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$10.99	07/20/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425958	CMS
Amgen Inc.	$28.88	07/19/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	825191689	CMS
AstraZeneca Pharmaceuticals LP	$13.76	07/17/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829921031	CMS
Amarin Pharma Inc.	$16.85	07/16/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	815204215	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$20.78	07/16/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425960	CMS
AbbVie Inc.	$23.36	07/15/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	795033479	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$15.40	07/14/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	850390285	CMS
Novo Nordisk Inc	$12.34	07/13/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	810648663	CMS
GlaxoSmithKline, LLC.	$10.72	07/12/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	801653259	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$31.38	07/09/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425962	CMS
E.R. Squibb & Sons, L.L.C.	$17.13	07/08/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	783447779	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$16.10	07/06/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425964	CMS
Astellas Pharma US Inc	$22.09	07/01/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	821390217	CMS
GlaxoSmithKline, LLC.	$22.08	07/01/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	803048733	CMS
Radius Health, Inc.	$31.91	06/30/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	830713541	CMS
Amarin Pharma Inc.	$11.90	06/28/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	815298931	CMS
AstraZeneca Pharmaceuticals LP	$14.16	06/26/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829734307	CMS
GlaxoSmithKline, LLC.	$11.23	06/24/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	802556425	CMS
Janssen Biotech, Inc.	$15.86	06/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	788040649	CMS
Janssen Pharmaceuticals, Inc	$2.91	06/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	788040671	CMS
Janssen Pharmaceuticals, Inc	$2.64	06/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	788040673	CMS
PFIZER INC.	$16.60	06/22/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	833562767	CMS
Janssen Pharmaceuticals, Inc	$17.80	06/21/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	788040675	CMS
Kowa Pharmaceuticals America, Inc.	$18.10	06/18/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	805502443	CMS
UCB, Inc.	$17.12	06/18/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	807312049	CMS
Lilly USA, LLC	$1.17	06/17/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	818991943	CMS
Lilly USA, LLC	$11.63	06/17/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	818992887	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$12.22	06/15/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425966	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$12.31	06/15/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425968	CMS
SANOFI-AVENTIS U.S. LLC	$14.23	06/14/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	843516041	CMS
Novo Nordisk Inc	$17.59	06/11/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	811310051	CMS
PFIZER INC.	$13.35	06/10/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	832609277	CMS
Lilly USA, LLC	$20.22	06/09/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	818991951	CMS
Amgen Inc.	$16.13	06/08/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	825191661	CMS
Boehringer Ingelheim Pharmaceuticals, Inc.	$26.93	06/08/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	763425970	CMS
Vanda Pharmaceuticals Inc.	$23.52	06/07/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	838903091	CMS
Astellas Pharma US Inc	$13.74	06/03/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	821390211	CMS
GlaxoSmithKline, LLC.	$27.70	05/28/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	802929503	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$15.31	05/28/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	820008219	CMS
AstraZeneca Pharmaceuticals LP	$17.68	05/26/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829708807	CMS
PFIZER INC.	$13.62	05/25/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	833552553	CMS
AstraZeneca Pharmaceuticals LP	$11.26	05/24/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	829925841	CMS
SANOFI-AVENTIS U.S. LLC	$9.62	05/21/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	843516045	CMS
Amarin Pharma Inc.	$7.92	05/20/2021	Food and Beverage	No dispute reported	Delay: No Change: UNCHANGED	06/30/2026	815204211	CMS

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2019	$4,087.63	341
PY2020	$3,411.51	210
PY2021	$4,189.60	254
PY2022	$3,480.66	202
PY2023	$4,076.71	231
PY2024	$4,234.97	218
PY2025	$4,057.11	212

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

Source files: Dataset page · Bulk file · PY2019 , PY2020 , PY2021 , PY2022 , PY2023 , PY2024 , PY2025
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.