Reflects CMS Open Payments as of 2026-07-26T04:22:22Z. 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 ↗

Covered recipient · General Payments record

CASSANDRA L WILLIAMSON

Physician Assistants & Advanced Practice Nursing Providers Physician Assistant

NPI: 1457565392
CMS profile: 10905008
Location: DAYTON, OH

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.

General Payments · PY2021–2025

CMS publication 2026-06-30

Latest program year · PY2025

$1,978.70

92 records · 0 disputed

“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.
Featured-page threshold (a presentation gate, not a judgment): (records>=3 OR total>=100) AND records>=2 AND NPI identity (all years).
Methodology & Data — sourcing, labeling, and limitations.

By nature of payment

PY2025 · sorted by reported total

Nature of payment	Amount	Records
Food and Beverage	$1,879.70	91
Education	$99.00	1

By paying entity

PY2025 · sorted by reported total

Paying entity	Amount	Records
ABBVIE INC.	$686.50	31
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$387.30	25
Janssen Biotech, Inc.	$155.46	4
GENZYME CORPORATION	$144.02	3
Ipsen Biopharmaceuticals, Inc	$115.38	6
Takeda Pharmaceuticals U.S.A., Inc.	$76.65	4
Regeneron Healthcare Solutions, Inc.	$67.28	2
Novo Nordisk AS	$59.48	3
QOL Medical, LLC	$48.49	2
AIMMUNE THERAPEUTICS, INC.	$43.53	2
Ardelyx, Inc.	$43.37	2
Madrigal Pharmaceuticals	$41.67	1
Gilead Sciences, Inc.	$37.51	2
Azurity Pharmaceuticals, Inc.	$25.99	1
Celltrion USA Inc.	$24.45	1
Braintree Laboratories, Inc.	$15.71	1
Phathom Pharmaceuticals, Inc.	$5.91	2

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2021	$924.35	71
PY2022	$1,233.93	72
PY2023	$1,082.18	66
PY2024	$1,608.45	94
PY2025	$1,978.70	92

Payment records · PY2025 (92)

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

Program year 2025 2021 2022 2023 2024 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
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$7.48	12/21/2025	Food and Beverage	No dispute reported	06/30/2026	1232047344	CMS
Azurity Pharmaceuticals, Inc.	$25.99	12/19/2025	Food and Beverage	No dispute reported	06/30/2026	1242690761	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$14.95	12/18/2025	Food and Beverage	No dispute reported	06/30/2026	1223971817	CMS
ABBVIE INC.	$17.02	12/11/2025	Food and Beverage	No dispute reported	06/30/2026	1204139031	CMS
Aimmune Therapeutics, Inc.	$22.78	12/10/2025	Food and Beverage	No dispute reported	06/30/2026	1249718402	CMS
ABBVIE INC.	$32.45	12/05/2025	Food and Beverage	No dispute reported	06/30/2026	1204139026	CMS
Phathom Pharmaceuticals, Inc.	$4.31	12/04/2025	Food and Beverage	No dispute reported	06/30/2026	1219218327	CMS
Phathom Pharmaceuticals, Inc.	$1.60	12/04/2025	Food and Beverage	No dispute reported	06/30/2026	1219218329	CMS
Ipsen Biopharmaceuticals, Inc	$19.96	12/01/2025	Food and Beverage	No dispute reported	06/30/2026	1208873289	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$10.20	12/01/2025	Food and Beverage	No dispute reported	06/30/2026	1232047341	CMS
ABBVIE INC.	$11.80	11/25/2025	Food and Beverage	No dispute reported	06/30/2026	1204139020	CMS
Novo Nordisk Inc	$19.39	11/21/2025	Food and Beverage	No dispute reported	06/30/2026	1188630646	CMS
Gilead Sciences, Inc.	$21.10	11/20/2025	Food and Beverage	No dispute reported	06/30/2026	1234516708	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$25.32	11/11/2025	Food and Beverage	No dispute reported	06/30/2026	1224060472	CMS
Janssen Biotech, Inc.	$15.71	11/04/2025	Food and Beverage	No dispute reported	06/30/2026	1174339393	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$12.67	10/30/2025	Food and Beverage	No dispute reported	06/30/2026	1232047335	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$12.79	10/30/2025	Food and Beverage	No dispute reported	06/30/2026	1232047337	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$18.23	10/30/2025	Food and Beverage	No dispute reported	06/30/2026	1232047339	CMS
ABBVIE INC.	$17.79	10/27/2025	Food and Beverage	No dispute reported	06/30/2026	1204139014	CMS
Ipsen Biopharmaceuticals, Inc	$19.66	10/14/2025	Food and Beverage	No dispute reported	06/30/2026	1208873287	CMS
QOL Medical, LLC	$18.14	10/09/2025	Food and Beverage	No dispute reported	06/30/2026	1185015236	CMS
Braintree Laboratories, Inc.	$15.71	10/08/2025	Food and Beverage	No dispute reported	06/30/2026	1173786972	CMS
ABBVIE INC.	$124.13	10/07/2025	Food and Beverage	No dispute reported	06/30/2026	1204139009	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.84	10/06/2025	Food and Beverage	No dispute reported	06/30/2026	1232047332	CMS
ABBVIE INC.	$7.80	10/03/2025	Food and Beverage	No dispute reported	06/30/2026	1204139003	CMS
Novo Nordisk Inc	$22.23	10/03/2025	Food and Beverage	No dispute reported	06/30/2026	1188923364	CMS
Novo Nordisk Inc	$17.86	10/02/2025	Food and Beverage	No dispute reported	06/30/2026	1188450292	CMS
ABBVIE INC.	$25.86	10/01/2025	Food and Beverage	No dispute reported	06/30/2026	1204138995	CMS
Gilead Sciences, Inc.	$16.41	09/24/2025	Food and Beverage	No dispute reported	06/30/2026	1234562601	CMS
Janssen Biotech, Inc.	$15.82	09/23/2025	Food and Beverage	No dispute reported	06/30/2026	1174340677	CMS
ABBVIE INC.	$25.27	09/18/2025	Food and Beverage	No dispute reported	06/30/2026	1204138989	CMS
Ipsen Biopharmaceuticals, Inc	$18.17	09/11/2025	Food and Beverage	No dispute reported	06/30/2026	1208873285	CMS
ABBVIE INC.	$17.55	09/09/2025	Food and Beverage	No dispute reported	06/30/2026	1204138983	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.12	09/09/2025	Food and Beverage	No dispute reported	06/30/2026	1232047330	CMS
ABBVIE INC.	$18.49	09/08/2025	Food and Beverage	No dispute reported	06/30/2026	1204138977	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$21.45	09/02/2025	Food and Beverage	No dispute reported	06/30/2026	1232047327	CMS
ABBVIE INC.	$22.43	08/28/2025	Food and Beverage	No dispute reported	06/30/2026	1204138965	CMS
ABBVIE INC.	$17.96	08/28/2025	Food and Beverage	No dispute reported	06/30/2026	1204138970	CMS
Regeneron Healthcare Solutions, Inc.	$36.52	08/22/2025	Food and Beverage	No dispute reported	06/30/2026	1213229685	CMS
QOL Medical, LLC	$30.35	08/20/2025	Food and Beverage	No dispute reported	06/30/2026	1185015208	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$23.20	08/18/2025	Food and Beverage	No dispute reported	06/30/2026	1232047320	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$10.36	08/18/2025	Food and Beverage	No dispute reported	06/30/2026	1232047323	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$11.92	08/18/2025	Food and Beverage	No dispute reported	06/30/2026	1232047325	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$15.20	08/11/2025	Food and Beverage	No dispute reported	06/30/2026	1232047318	CMS
ABBVIE INC.	$13.99	08/07/2025	Food and Beverage	No dispute reported	06/30/2026	1204138960	CMS
ABBVIE INC.	$19.43	07/24/2025	Food and Beverage	No dispute reported	06/30/2026	1204138953	CMS
ABBVIE INC.	$28.19	07/23/2025	Food and Beverage	No dispute reported	06/30/2026	1204138941	CMS
ABBVIE INC.	$0.98	07/23/2025	Food and Beverage	No dispute reported	06/30/2026	1204138947	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$9.39	07/21/2025	Food and Beverage	No dispute reported	06/30/2026	1232047316	CMS
Ipsen Biopharmaceuticals, Inc	$18.25	07/18/2025	Food and Beverage	No dispute reported	06/30/2026	1208873283	CMS
ABBVIE INC.	$19.26	07/15/2025	Food and Beverage	No dispute reported	06/30/2026	1204138936	CMS
ABBVIE INC.	$14.72	07/01/2025	Food and Beverage	No dispute reported	06/30/2026	1204138928	CMS
Madrigal Pharmaceuticals	$41.67	06/25/2025	Food and Beverage	No dispute reported	06/30/2026	1248391631	CMS
ABBVIE INC.	$21.62	06/20/2025	Food and Beverage	No dispute reported	06/30/2026	1204138922	CMS
ABBVIE INC.	$30.06	06/18/2025	Food and Beverage	No dispute reported	06/30/2026	1204138916	CMS
ABBVIE INC.	$15.31	06/03/2025	Food and Beverage	No dispute reported	06/30/2026	1204138909	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$9.38	06/03/2025	Food and Beverage	No dispute reported	06/30/2026	1232047309	CMS
ABBVIE INC.	$20.38	05/31/2025	Food and Beverage	No dispute reported	06/30/2026	1204138902	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$15.37	05/27/2025	Food and Beverage	No dispute reported	06/30/2026	1232047311	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$23.91	05/27/2025	Food and Beverage	No dispute reported	06/30/2026	1232047314	CMS
Ipsen Biopharmaceuticals, Inc	$19.75	05/22/2025	Food and Beverage	No dispute reported	06/30/2026	1208873281	CMS
ABBVIE INC.	$15.94	05/20/2025	Food and Beverage	No dispute reported	06/30/2026	1204138896	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$8.05	05/05/2025	Food and Beverage	No dispute reported	06/30/2026	1232047306	CMS
ABBVIE INC.	$22.95	05/02/2025	Food and Beverage	No dispute reported	06/30/2026	1204138889	CMS
ABBVIE INC.	$14.33	04/29/2025	Food and Beverage	No dispute reported	06/30/2026	1204138878	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$12.20	04/28/2025	Food and Beverage	No dispute reported	06/30/2026	1232047304	CMS
ABBVIE INC.	$6.10	04/24/2025	Food and Beverage	No dispute reported	06/30/2026	1204138873	CMS
Janssen Biotech, Inc.	$24.93	04/24/2025	Food and Beverage	No dispute reported	06/30/2026	1174343239	CMS
Janssen Biotech, Inc.	$99.00	04/24/2025	Education	No dispute reported	06/30/2026	1174344250	CMS
Ardelyx, Inc.	$25.71	04/22/2025	Food and Beverage	No dispute reported	06/30/2026	1247950937	CMS
Celltrion USA Inc.	$24.45	04/16/2025	Food and Beverage	No dispute reported	06/30/2026	1250850188	CMS
GENZYME CORPORATION	$81.88	04/08/2025	Food and Beverage	No dispute reported	06/30/2026	1233407787	CMS
ABBVIE INC.	$20.27	04/05/2025	Food and Beverage	No dispute reported	06/30/2026	1204138866	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$16.78	04/02/2025	Food and Beverage	No dispute reported	06/30/2026	1232047300	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.99	04/02/2025	Food and Beverage	No dispute reported	06/30/2026	1232047302	CMS
Aimmune Therapeutics, Inc.	$20.75	03/31/2025	Food and Beverage	No dispute reported	06/30/2026	1249718400	CMS
ABBVIE INC.	$20.46	03/26/2025	Food and Beverage	No dispute reported	06/30/2026	1204138859	CMS
ABBVIE INC.	$18.91	03/13/2025	Food and Beverage	No dispute reported	06/30/2026	1204138853	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$19.52	03/13/2025	Food and Beverage	No dispute reported	06/30/2026	1232047296	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$22.57	03/13/2025	Food and Beverage	No dispute reported	06/30/2026	1232047298	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$13.14	02/28/2025	Food and Beverage	No dispute reported	06/30/2026	1232047289	CMS
ABBVIE INC.	$28.01	02/26/2025	Food and Beverage	No dispute reported	06/30/2026	1204138846	CMS
Ardelyx, Inc.	$17.66	02/19/2025	Food and Beverage	No dispute reported	06/30/2026	1247950935	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$20.97	02/18/2025	Food and Beverage	No dispute reported	06/30/2026	1224027326	CMS
ABBVIE INC.	$17.04	02/17/2025	Food and Beverage	No dispute reported	06/30/2026	1204138840	CMS
GENZYME CORPORATION	$34.53	02/12/2025	Food and Beverage	No dispute reported	06/30/2026	1233407751	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$8.13	02/05/2025	Food and Beverage	No dispute reported	06/30/2026	1232047291	CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC	$17.41	02/05/2025	Food and Beverage	No dispute reported	06/30/2026	1232047293	CMS
Regeneron Healthcare Solutions, Inc.	$30.76	01/24/2025	Food and Beverage	No dispute reported	06/30/2026	1213229683	CMS
Ipsen Biopharmaceuticals, Inc	$19.59	01/17/2025	Food and Beverage	No dispute reported	06/30/2026	1208873279	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$15.41	01/14/2025	Food and Beverage	No dispute reported	06/30/2026	1223975585	CMS
GENZYME CORPORATION	$27.61	01/13/2025	Food and Beverage	No dispute reported	06/30/2026	1233407739	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

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.

Cite this record.

Permalink https://industrypayments.org/provider/npi-1457565392

Plain: CASSANDRA L WILLIAMSON, NPI 1457565392. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1457565392.
APA 7: IndustryPayments. (2026). CASSANDRA L WILLIAMSON, NPI 1457565392 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1457565392
Bluebook: CASSANDRA L WILLIAMSON, NPI 1457565392, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1457565392.

Source: Centers for Medicare & Medicaid Services, Open Payments.