TAMMY TIM YI CHEN

Allopathic & Osteopathic Physicians|Psychiatry & Neurology|Psychiatry ROCK HILL, SC NPI 1013055706

General Payments — all program years on this page

$6,093.19

Category: General Payments
Program years: PY2018–2024
Record count: 463
As of (CMS publication): 2026-01-23

Latest program year (PY2024): $940.87 across 51 records · disputed records: 0

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

How this figure is 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

Latest program year (PY2024) · sorted by reported total.

Nature of payment	Amount	Records
Food and Beverage	$913.60	50
Education	$27.27	1

By paying entity

Latest program year (PY2024) · sorted by reported total.

Paying entity	Amount	Records
ABBVIE INC.	$245.25	22
Otsuka America Pharmaceutical, Inc.	$196.74	6
Neurocrine BioSciences, Inc.	$126.32	5
Janssen Pharmaceuticals, Inc	$68.16	3
Supernus Pharmaceuticals, Inc.	$60.14	3
Lundbeck LLC	$54.99	2
Neos Therapeutics, LP	$52.58	3
ITI, Inc.	$37.63	2
Teva Pharmaceuticals USA, Inc.	$37.62	2
E.R. Squibb & Sons, L.L.C.	$27.27	1
Vanda Pharmaceuticals Inc.	$17.58	1
IDORSIA PHARMACEUTICALS US INC	$16.59	1

By program year

Program year	Amount	Records
2018	$764.45	69
2019	$592.52	79
2020	$82.22	5
2021	$601.08	46
2022	$1,295.94	96
2023	$1,816.11	117
2024	$940.87	51

Records — PY2024 (51)

Record ID	Paying entity	Amount	Date	Nature of payment	Dispute status	Published	Source
1078179199	Janssen Pharmaceuticals, Inc	$19.68	04/04/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1078179221	Janssen Pharmaceuticals, Inc	$22.89	01/23/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1078179253	Janssen Pharmaceuticals, Inc	$25.59	05/02/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1082663305	Neos Therapeutics, LP	$20.35	01/18/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1082665519	Neos Therapeutics, LP	$14.67	04/11/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1082669203	Neos Therapeutics, LP	$17.56	05/23/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1101807738	E.R. Squibb & Sons, L.L.C.	$27.27	12/11/2024	Education	Undisputed	01/23/2026	View at CMS
1103453636	ABBVIE INC.	$7.32	01/04/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453638	ABBVIE INC.	$6.73	01/09/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453640	ABBVIE INC.	$20.84	01/16/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453642	ABBVIE INC.	$7.67	01/23/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453644	ABBVIE INC.	$6.62	02/06/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453646	ABBVIE INC.	$6.33	02/27/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453648	ABBVIE INC.	$14.64	03/05/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453650	ABBVIE INC.	$5.38	03/19/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453652	ABBVIE INC.	$19.06	03/26/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453654	ABBVIE INC.	$17.82	05/07/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453656	ABBVIE INC.	$20.95	05/14/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453658	ABBVIE INC.	$5.96	05/21/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453660	ABBVIE INC.	$8.80	05/28/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453662	ABBVIE INC.	$6.62	06/11/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453664	ABBVIE INC.	$3.76	06/25/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453666	ABBVIE INC.	$6.62	07/09/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453668	ABBVIE INC.	$9.72	08/01/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453670	ABBVIE INC.	$7.14	08/27/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453672	ABBVIE INC.	$23.72	10/11/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453674	ABBVIE INC.	$17.56	10/15/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453676	ABBVIE INC.	$11.82	10/29/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1103453678	ABBVIE INC.	$10.17	12/17/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1118874470	Otsuka America Pharmaceutical, Inc.	$6.00	01/09/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1118874472	Otsuka America Pharmaceutical, Inc.	$26.95	02/06/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1118874474	Otsuka America Pharmaceutical, Inc.	$104.63	03/13/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1118874476	Otsuka America Pharmaceutical, Inc.	$15.05	03/21/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1118874478	Otsuka America Pharmaceutical, Inc.	$22.82	04/16/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1118874480	Otsuka America Pharmaceutical, Inc.	$21.29	06/04/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1133899225	Vanda Pharmaceuticals Inc.	$17.58	02/27/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1143205993	ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)	$18.53	02/13/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1143205997	ITI, Inc. (d/b/a Intra-Cellular Therapies, Inc.)	$19.10	07/02/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1145904451	Lundbeck LLC	$27.31	04/02/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1145904453	Lundbeck LLC	$27.68	05/21/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1146763227	IDORSIA PHARMACEUTICALS US INC	$16.59	01/04/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1147888711	Supernus Pharmaceuticals, Inc.	$15.00	07/08/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1147888713	Supernus Pharmaceuticals, Inc.	$20.00	04/05/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1147888715	Supernus Pharmaceuticals, Inc.	$25.14	06/04/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1150832360	Neurocrine Biosciences, Inc.	$27.57	03/07/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1150839306	Neurocrine Biosciences, Inc.	$25.20	11/26/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1150839578	Neurocrine Biosciences, Inc.	$25.09	06/06/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1150840528	Neurocrine Biosciences, Inc.	$24.79	04/18/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1150844212	Neurocrine Biosciences, Inc.	$23.67	10/18/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1151586326	Teva Pharmaceuticals USA, Inc.	$23.39	05/29/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS
1151586328	Teva Pharmaceuticals USA, Inc.	$14.23	06/18/2024	Food and Beverage	Undisputed	01/23/2026	View at CMS

Provenance & corrections

Dataset: CMS Open Payments — General Payments
Source: CMS Open Payments dataset (bulk file)
Publisher of source data: Centers for Medicare & Medicaid Services
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.

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.