Covered recipient · General Payments record

RICARDO A TAN

Allopathic & Osteopathic Physicians Allergy & Immunology Allergy

NPI: 1255353629
CMS profile: 193091
Location: LOS ANGELES, CA

General Payments · PY2018–2024

$16,946.02

Reported across 591 records
CMS publication 2026-01-23

Latest program year · PY2024

$2,171.29

102 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

Nature of payment	Amount	Records
Food and Beverage	$2,157.07	100
Consulting Fee	$8.92	1
Education	$5.30	1

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
CSL Behring	$393.19	22
Regeneron Healthcare Solutions, Inc.	$291.77	9
BioCryst US Sales Co., LLC	$290.27	14
GlaxoSmithKline, LLC.	$274.60	13
Takeda Pharmaceuticals U.S.A., Inc.	$236.71	11
GENZYME CORPORATION	$221.77	11
Acerta Pharma LLC	$103.83	5
Genentech USA, Inc.	$95.13	4
Octapharma USA, Inc.	$87.08	3
PFIZER INC.	$75.05	5
NOVARTIS PHARMACEUTICALS CORPORATION	$26.00	1
Pharming Healthcare, Inc.	$25.62	1
OptiNose US, Inc.	$21.50	1
Incyte Corporation	$19.85	1
ADMA BioManufacturing LLC	$8.92	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$2,886.96	72
PY2019	$4,134.94	80
PY2020	$1,654.40	76
PY2021	$2,257.30	93
PY2022	$1,797.64	75
PY2023	$2,043.49	93
PY2024	$2,171.29	102

Payment records · PY2024 (102)

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

Program year 2024 2018 2019 2020 2021 2022 2023 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
ADMA BioManufacturing LLC	$8.92	04/03/2024	Consulting Fee	Undisputed	01/23/2026	1149639294	CMS
AstraZeneca Pharmaceuticals LP	$22.76	02/09/2024	Food and Beverage	Undisputed	01/23/2026	1105397634	CMS
AstraZeneca Pharmaceuticals LP	$22.51	07/30/2024	Food and Beverage	Undisputed	01/23/2026	1104253635	CMS
AstraZeneca Pharmaceuticals LP	$13.61	09/24/2024	Food and Beverage	Undisputed	01/23/2026	1104474610	CMS
AstraZeneca Pharmaceuticals LP	$22.77	11/02/2024	Food and Beverage	Undisputed	01/23/2026	1105367474	CMS
AstraZeneca Pharmaceuticals LP	$22.18	12/05/2024	Food and Beverage	Undisputed	01/23/2026	1104505970	CMS
BioCryst US Sales Co., LLC	$24.58	01/16/2024	Food and Beverage	Undisputed	01/23/2026	1117478998	CMS
BioCryst US Sales Co., LLC	$28.03	03/06/2024	Food and Beverage	Undisputed	01/23/2026	1117474922	CMS
BioCryst US Sales Co., LLC	$27.77	03/23/2024	Food and Beverage	Undisputed	01/23/2026	1117472934	CMS
BioCryst US Sales Co., LLC	$10.69	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1117470112	CMS
BioCryst US Sales Co., LLC	$10.21	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1117471400	CMS
BioCryst US Sales Co., LLC	$10.42	04/29/2024	Food and Beverage	Undisputed	01/23/2026	1117473786	CMS
BioCryst US Sales Co., LLC	$11.72	04/29/2024	Food and Beverage	Undisputed	01/23/2026	1117482436	CMS
BioCryst US Sales Co., LLC	$18.10	05/16/2024	Food and Beverage	Undisputed	01/23/2026	1117470442	CMS
BioCryst US Sales Co., LLC	$18.89	08/08/2024	Food and Beverage	Undisputed	01/23/2026	1117480182	CMS
BioCryst US Sales Co., LLC	$22.89	08/22/2024	Food and Beverage	Undisputed	01/23/2026	1117469587	CMS
BioCryst US Sales Co., LLC	$17.38	10/01/2024	Food and Beverage	Undisputed	01/23/2026	1117472158	CMS
BioCryst US Sales Co., LLC	$26.47	10/17/2024	Food and Beverage	Undisputed	01/23/2026	1117481934	CMS
BioCryst US Sales Co., LLC	$37.39	10/29/2024	Food and Beverage	Undisputed	01/23/2026	1117478232	CMS
BioCryst US Sales Co., LLC	$25.73	12/12/2024	Food and Beverage	Undisputed	01/23/2026	1117475324	CMS
CSL Behring	$3.22	01/30/2024	Food and Beverage	Undisputed	01/23/2026	1134612159	CMS
CSL Behring	$12.42	03/05/2024	Food and Beverage	Undisputed	01/23/2026	1134612049	CMS
CSL Behring	$17.73	03/05/2024	Food and Beverage	Undisputed	01/23/2026	1134612051	CMS
CSL Behring	$19.16	03/12/2024	Food and Beverage	Undisputed	01/23/2026	1134612053	CMS
CSL Behring	$31.46	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1134612057	CMS
CSL Behring	$6.00	04/16/2024	Food and Beverage	Undisputed	01/23/2026	1134612171	CMS
CSL Behring	$5.45	04/17/2024	Food and Beverage	Undisputed	01/23/2026	1134612173	CMS
CSL Behring	$17.99	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1134612059	CMS
CSL Behring	$29.76	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1134612061	CMS
CSL Behring	$13.21	07/03/2024	Food and Beverage	Undisputed	01/23/2026	1134612067	CMS
CSL Behring	$14.89	07/12/2024	Food and Beverage	Undisputed	01/23/2026	1134612071	CMS
CSL Behring	$12.85	08/02/2024	Food and Beverage	Undisputed	01/23/2026	1134612073	CMS
CSL Behring	$23.55	08/07/2024	Food and Beverage	Undisputed	01/23/2026	1134612075	CMS
CSL Behring	$30.55	08/13/2024	Food and Beverage	Undisputed	01/23/2026	1134612079	CMS
CSL Behring	$33.01	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1134612081	CMS
CSL Behring	$10.93	09/20/2024	Food and Beverage	Undisputed	01/23/2026	1134612085	CMS
CSL Behring	$33.98	10/08/2024	Food and Beverage	Undisputed	01/23/2026	1134612091	CMS
CSL Behring	$20.37	10/18/2024	Food and Beverage	Undisputed	01/23/2026	1134612235	CMS
CSL Behring	$3.96	10/31/2024	Food and Beverage	Undisputed	01/23/2026	1134612239	CMS
CSL Behring	$10.02	11/01/2024	Food and Beverage	Undisputed	01/23/2026	1134612143	CMS
CSL Behring	$11.19	11/15/2024	Food and Beverage	Undisputed	01/23/2026	1134612145	CMS
CSL Behring	$31.49	12/13/2024	Food and Beverage	Undisputed	01/23/2026	1134612257	CMS
Genentech USA, Inc.	$24.16	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1133095768	CMS
Genentech USA, Inc.	$20.40	04/29/2024	Food and Beverage	Undisputed	01/23/2026	1133095772	CMS
Genentech USA, Inc.	$25.26	07/17/2024	Food and Beverage	Undisputed	01/23/2026	1133095776	CMS
Genentech USA, Inc.	$25.31	10/09/2024	Food and Beverage	Undisputed	01/23/2026	1133095780	CMS
GENZYME CORPORATION	$28.50	01/10/2024	Food and Beverage	Undisputed	01/23/2026	1139620217	CMS
GENZYME CORPORATION	$17.69	02/14/2024	Food and Beverage	Undisputed	01/23/2026	1139620231	CMS
GENZYME CORPORATION	$10.55	05/03/2024	Food and Beverage	Undisputed	01/23/2026	1139620247	CMS
GENZYME CORPORATION	$18.43	05/10/2024	Food and Beverage	Undisputed	01/23/2026	1139620245	CMS
GENZYME CORPORATION	$25.00	05/30/2024	Food and Beverage	Undisputed	01/23/2026	1139620269	CMS
GENZYME CORPORATION	$16.90	07/18/2024	Food and Beverage	Undisputed	01/23/2026	1139620289	CMS
GENZYME CORPORATION	$10.13	07/24/2024	Food and Beverage	Undisputed	01/23/2026	1139620293	CMS
GENZYME CORPORATION	$17.73	08/29/2024	Food and Beverage	Undisputed	01/23/2026	1139620311	CMS
GENZYME CORPORATION	$25.39	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1139620329	CMS
GENZYME CORPORATION	$12.08	11/19/2024	Food and Beverage	Undisputed	01/23/2026	1139620339	CMS
GENZYME CORPORATION	$39.37	12/04/2024	Food and Beverage	Undisputed	01/23/2026	1139620353	CMS
GlaxoSmithKline, LLC.	$17.34	01/19/2024	Food and Beverage	Undisputed	01/23/2026	1116166685	CMS
GlaxoSmithKline, LLC.	$10.70	01/29/2024	Food and Beverage	Undisputed	01/23/2026	1116436519	CMS
GlaxoSmithKline, LLC.	$1.35	02/06/2024	Food and Beverage	Undisputed	01/23/2026	1116244428	CMS
GlaxoSmithKline, LLC.	$20.84	02/06/2024	Food and Beverage	Undisputed	01/23/2026	1116560018	CMS
GlaxoSmithKline, LLC.	$18.64	02/26/2024	Food and Beverage	Undisputed	01/23/2026	1115798945	CMS
GlaxoSmithKline, LLC.	$22.40	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1116659265	CMS
GlaxoSmithKline, LLC.	$22.60	07/02/2024	Food and Beverage	Undisputed	01/23/2026	1116401393	CMS
GlaxoSmithKline, LLC.	$30.29	09/25/2024	Food and Beverage	Undisputed	01/23/2026	1116591851	CMS
GlaxoSmithKline, LLC.	$28.84	11/08/2024	Food and Beverage	Undisputed	01/23/2026	1116501995	CMS
GlaxoSmithKline, LLC.	$23.58	11/17/2024	Food and Beverage	Undisputed	01/23/2026	1116237393	CMS
GlaxoSmithKline, LLC.	$21.72	11/19/2024	Food and Beverage	Undisputed	01/23/2026	1116455085	CMS
GlaxoSmithKline, LLC.	$24.30	11/20/2024	Food and Beverage	Undisputed	01/23/2026	1116366702	CMS
GlaxoSmithKline, LLC.	$32.00	12/19/2024	Food and Beverage	Undisputed	01/23/2026	1116252599	CMS
Incyte Corporation	$19.85	08/07/2024	Food and Beverage	Undisputed	01/23/2026	1141285819	CMS
Novartis Pharmaceuticals Corporation	$26.00	11/20/2024	Food and Beverage	Undisputed	01/23/2026	1087347140	CMS
Octapharma USA, Inc.	$25.30	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1142319983	CMS
Octapharma USA, Inc.	$25.02	09/10/2024	Food and Beverage	Undisputed	01/23/2026	1142319987	CMS
Octapharma USA, Inc.	$36.76	12/02/2024	Food and Beverage	Undisputed	01/23/2026	1142319990	CMS
Optinose US, Inc.	$21.50	09/09/2024	Food and Beverage	Undisputed	01/23/2026	1142176428	CMS
PFIZER INC.	$5.30	06/21/2024	Education	Undisputed	01/23/2026	1131729427	CMS
PFIZER INC.	$29.91	07/03/2024	Food and Beverage	Undisputed	01/23/2026	1131791069	CMS
PFIZER INC.	$7.87	08/30/2024	Food and Beverage	Undisputed	01/23/2026	1131969131	CMS
PFIZER INC.	$6.38	10/16/2024	Food and Beverage	Undisputed	01/23/2026	1132081960	CMS
PFIZER INC.	$25.59	11/15/2024	Food and Beverage	Undisputed	01/23/2026	1131027336	CMS
Pharming Healthcare, Inc.	$25.62	05/01/2024	Food and Beverage	Undisputed	01/23/2026	1132168767	CMS
Regeneron Healthcare Solutions, Inc.	$30.66	01/03/2024	Food and Beverage	Undisputed	01/23/2026	1114210716	CMS
Regeneron Healthcare Solutions, Inc.	$28.24	04/02/2024	Food and Beverage	Undisputed	01/23/2026	1114210724	CMS
Regeneron Healthcare Solutions, Inc.	$26.65	04/10/2024	Food and Beverage	Undisputed	01/23/2026	1114210730	CMS
Regeneron Healthcare Solutions, Inc.	$34.55	05/08/2024	Food and Beverage	Undisputed	01/23/2026	1114210737	CMS
Regeneron Healthcare Solutions, Inc.	$33.81	08/09/2024	Food and Beverage	Undisputed	01/23/2026	1114210744	CMS
Regeneron Healthcare Solutions, Inc.	$38.78	08/28/2024	Food and Beverage	Undisputed	01/23/2026	1114210750	CMS
Regeneron Healthcare Solutions, Inc.	$34.61	10/04/2024	Food and Beverage	Undisputed	01/23/2026	1114210758	CMS
Regeneron Healthcare Solutions, Inc.	$24.77	10/30/2024	Food and Beverage	Undisputed	01/23/2026	1114210764	CMS
Regeneron Healthcare Solutions, Inc.	$39.70	12/19/2024	Food and Beverage	Undisputed	01/23/2026	1114210770	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$0.75	01/04/2024	Food and Beverage	Undisputed	01/23/2026	1137685798	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$27.08	01/04/2024	Food and Beverage	Undisputed	01/23/2026	1137685800	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$25.21	01/12/2024	Food and Beverage	Undisputed	01/23/2026	1137685802	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$22.85	02/01/2024	Food and Beverage	Undisputed	01/23/2026	1137685804	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$50.24	02/14/2024	Food and Beverage	Undisputed	01/23/2026	1137685806	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$29.89	03/15/2024	Food and Beverage	Undisputed	01/23/2026	1137685808	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$27.08	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1137685810	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$0.77	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1137685812	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$27.33	07/01/2024	Food and Beverage	Undisputed	01/23/2026	1137685814	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$0.66	07/01/2024	Food and Beverage	Undisputed	01/23/2026	1137685816	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$24.85	07/11/2024	Food and Beverage	Undisputed	01/23/2026	1137685818	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

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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.