Covered recipient · General Payments record

SAM S AHN

Allopathic & Osteopathic Physicians Internal Medicine Allergy & Immunology

NPI: 1558423814
CMS profile: 251791
Location: NAPA, CA

General Payments · PY2018–2024

$22,312.91

Reported across 433 records
CMS publication 2026-01-23

Latest program year · PY2024

$3,423.62

78 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	$2,523.74	76
Consulting Fee	$899.88	2

By paying entity

PY2024 · sorted by reported total

Paying entity	Amount	Records
GENZYME CORPORATION	$1,640.60	18
Acerta Pharma LLC	$429.14	12
Genentech USA, Inc.	$186.76	8
Amgen Inc.	$186.18	6
ADMA BioManufacturing LLC	$169.88	2
CSL Behring	$104.55	4
Regeneron Healthcare Solutions, Inc.	$87.94	4
NOVARTIS PHARMACEUTICALS CORPORATION	$80.01	1
Takeda Pharmaceuticals U.S.A., Inc.	$79.66	3
Grifols USA, LLC	$68.62	4
GlaxoSmithKline, LLC.	$56.95	2
OptiNose US, Inc.	$45.86	2
Phadia US Inc.	$42.69	2
Electromed, Inc.	$40.83	2
BioCryst US Sales Co., LLC	$39.85	2
MEDLINE INDUSTRIES LP	$37.27	1
Pharming Healthcare, Inc.	$29.86	1
Lilly USA, LLC	$27.41	1
PFIZER INC.	$23.57	1
Kaleo, Inc.	$23.30	1
Dermavant Sciences, Inc.	$22.69	1

By program year

All program years on this page · sorted by year

Program year	Amount	Records
PY2018	$1,841.32	40
PY2019	$1,161.62	37
PY2020	$1,477.60	26
PY2021	$3,105.54	77
PY2022	$8,496.42	78
PY2023	$2,806.79	97
PY2024	$3,423.62	78

Payment records · PY2024 (78)

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	$19.88	03/27/2024	Consulting Fee	Undisputed	01/23/2026	1149639292	CMS
ADMA BioManufacturing LLC	$150.00	10/17/2024	Food and Beverage	Undisputed	01/23/2026	1149639910	CMS
Amgen Inc.	$19.14	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1115412974	CMS
Amgen Inc.	$24.67	04/09/2024	Food and Beverage	Undisputed	01/23/2026	1115412977	CMS
Amgen Inc.	$29.04	06/27/2024	Food and Beverage	Undisputed	01/23/2026	1115412971	CMS
Amgen Inc.	$31.41	08/01/2024	Food and Beverage	Undisputed	01/23/2026	1115412982	CMS
Amgen Inc.	$62.06	08/28/2024	Food and Beverage	Undisputed	01/23/2026	1115412988	CMS
Amgen Inc.	$19.86	12/02/2024	Food and Beverage	Undisputed	01/23/2026	1115412993	CMS
AstraZeneca Pharmaceuticals LP	$40.96	02/07/2024	Food and Beverage	Undisputed	01/23/2026	1105737665	CMS
AstraZeneca Pharmaceuticals LP	$27.04	02/15/2024	Food and Beverage	Undisputed	01/23/2026	1105676207	CMS
AstraZeneca Pharmaceuticals LP	$33.72	03/23/2024	Food and Beverage	Undisputed	01/23/2026	1105229516	CMS
AstraZeneca Pharmaceuticals LP	$17.86	04/01/2024	Food and Beverage	Undisputed	01/23/2026	1104733825	CMS
AstraZeneca Pharmaceuticals LP	$29.65	05/16/2024	Food and Beverage	Undisputed	01/23/2026	1104661091	CMS
AstraZeneca Pharmaceuticals LP	$24.64	06/04/2024	Food and Beverage	Undisputed	01/23/2026	1105851432	CMS
AstraZeneca Pharmaceuticals LP	$23.79	06/24/2024	Food and Beverage	Undisputed	01/23/2026	1104583748	CMS
AstraZeneca Pharmaceuticals LP	$30.30	06/25/2024	Food and Beverage	Undisputed	01/23/2026	1104667669	CMS
AstraZeneca Pharmaceuticals LP	$124.13	08/27/2024	Food and Beverage	Undisputed	01/23/2026	1105866060	CMS
AstraZeneca Pharmaceuticals LP	$19.84	09/13/2024	Food and Beverage	Undisputed	01/23/2026	1105602662	CMS
AstraZeneca Pharmaceuticals LP	$23.73	10/15/2024	Food and Beverage	Undisputed	01/23/2026	1104440289	CMS
AstraZeneca Pharmaceuticals LP	$33.48	10/31/2024	Food and Beverage	Undisputed	01/23/2026	1105715816	CMS
BioCryst US Sales Co., LLC	$19.75	02/04/2024	Food and Beverage	Undisputed	01/23/2026	1117478158	CMS
BioCryst US Sales Co., LLC	$20.10	03/13/2024	Food and Beverage	Undisputed	01/23/2026	1117476888	CMS
CSL Behring	$36.66	02/22/2024	Food and Beverage	Undisputed	01/23/2026	1134603507	CMS
CSL Behring	$26.52	10/15/2024	Food and Beverage	Undisputed	01/23/2026	1134603561	CMS
CSL Behring	$17.66	11/07/2024	Food and Beverage	Undisputed	01/23/2026	1134603575	CMS
CSL Behring	$23.71	11/20/2024	Food and Beverage	Undisputed	01/23/2026	1134603577	CMS
Dermavant Sciences, Inc.	$22.69	03/01/2024	Food and Beverage	Undisputed	01/23/2026	1127847034	CMS
Electromed, Inc.	$19.65	04/03/2024	Food and Beverage	Undisputed	01/23/2026	1137876450	CMS
Electromed, Inc.	$21.18	07/24/2024	Food and Beverage	Undisputed	01/23/2026	1137876455	CMS
Genentech USA, Inc.	$20.37	02/12/2024	Food and Beverage	Undisputed	01/23/2026	1133105057	CMS
Genentech USA, Inc.	$28.58	03/12/2024	Food and Beverage	Undisputed	01/23/2026	1133105086	CMS
Genentech USA, Inc.	$21.85	03/19/2024	Food and Beverage	Undisputed	01/23/2026	1133105061	CMS
Genentech USA, Inc.	$25.97	05/22/2024	Food and Beverage	Undisputed	01/23/2026	1133105065	CMS
Genentech USA, Inc.	$21.69	06/17/2024	Food and Beverage	Undisputed	01/23/2026	1133105069	CMS
Genentech USA, Inc.	$22.50	09/18/2024	Food and Beverage	Undisputed	01/23/2026	1133105073	CMS
Genentech USA, Inc.	$22.44	09/23/2024	Food and Beverage	Undisputed	01/23/2026	1133105077	CMS
Genentech USA, Inc.	$23.36	12/09/2024	Food and Beverage	Undisputed	01/23/2026	1133105081	CMS
GENZYME CORPORATION	$145.79	01/17/2024	Food and Beverage	Undisputed	01/23/2026	1139734006	CMS
GENZYME CORPORATION	$6.07	01/24/2024	Food and Beverage	Undisputed	01/23/2026	1139733920	CMS
GENZYME CORPORATION	$27.97	02/14/2024	Food and Beverage	Undisputed	01/23/2026	1139733924	CMS
GENZYME CORPORATION	$39.04	02/27/2024	Food and Beverage	Undisputed	01/23/2026	1139734000	CMS
GENZYME CORPORATION	$24.24	03/28/2024	Food and Beverage	Undisputed	01/23/2026	1139733954	CMS
GENZYME CORPORATION	$12.48	04/02/2024	Food and Beverage	Undisputed	01/23/2026	1139733956	CMS
GENZYME CORPORATION	$24.60	04/17/2024	Food and Beverage	Undisputed	01/23/2026	1139733974	CMS
GENZYME CORPORATION	$26.16	05/13/2024	Food and Beverage	Undisputed	01/23/2026	1139733978	CMS
GENZYME CORPORATION	$126.76	07/11/2024	Food and Beverage	Undisputed	01/23/2026	1139734010	CMS
GENZYME CORPORATION	$21.74	07/31/2024	Food and Beverage	Undisputed	01/23/2026	1139733992	CMS
GENZYME CORPORATION	$32.28	09/05/2024	Food and Beverage	Undisputed	01/23/2026	1139734014	CMS
GENZYME CORPORATION	$23.50	09/25/2024	Food and Beverage	Undisputed	01/23/2026	1139734022	CMS
GENZYME CORPORATION	$49.03	10/09/2024	Food and Beverage	Undisputed	01/23/2026	1139734062	CMS
GENZYME CORPORATION	$61.72	10/24/2024	Food and Beverage	Undisputed	01/23/2026	1139734034	CMS
GENZYME CORPORATION	$88.47	10/25/2024	Food and Beverage	Undisputed	01/23/2026	1139734040	CMS
GENZYME CORPORATION	$880.00	11/06/2024	Consulting Fee	Undisputed	01/23/2026	1139734064	CMS
GENZYME CORPORATION	$25.49	12/04/2024	Food and Beverage	Undisputed	01/23/2026	1139734052	CMS
GENZYME CORPORATION	$25.26	12/16/2024	Food and Beverage	Undisputed	01/23/2026	1139734058	CMS
GlaxoSmithKline, LLC.	$29.12	02/29/2024	Food and Beverage	Undisputed	01/23/2026	1116179010	CMS
GlaxoSmithKline, LLC.	$27.83	08/14/2024	Food and Beverage	Undisputed	01/23/2026	1116480817	CMS
Grifols USA, LLC	$15.63	02/13/2024	Food and Beverage	Undisputed	01/23/2026	1124720715	CMS
Grifols USA, LLC	$19.97	04/10/2024	Food and Beverage	Undisputed	01/23/2026	1124720713	CMS
Grifols USA, LLC	$19.72	10/28/2024	Food and Beverage	Undisputed	01/23/2026	1124720709	CMS
Grifols USA, LLC	$13.30	12/30/2024	Food and Beverage	Undisputed	01/23/2026	1124720711	CMS
kaleo, Inc.	$23.30	08/05/2024	Food and Beverage	Undisputed	01/23/2026	1126629860	CMS
Lilly USA, LLC	$27.41	11/10/2024	Food and Beverage	Undisputed	01/23/2026	1135410501	CMS
Medline Industries LP	$37.27	02/21/2024	Food and Beverage	Undisputed	01/23/2026	1144135090	CMS
Novartis Pharmaceuticals Corporation	$80.01	02/05/2024	Food and Beverage	Undisputed	01/23/2026	1086740557	CMS
Optinose US, Inc.	$22.89	03/18/2024	Food and Beverage	Undisputed	01/23/2026	1142169796	CMS
Optinose US, Inc.	$22.97	07/22/2024	Food and Beverage	Undisputed	01/23/2026	1142169808	CMS
PFIZER INC.	$23.57	05/19/2024	Food and Beverage	Undisputed	01/23/2026	1131495213	CMS
Phadia US Inc.	$15.78	04/24/2024	Food and Beverage	Undisputed	01/23/2026	1067585880	CMS
Phadia US Inc.	$26.91	09/04/2024	Food and Beverage	Undisputed	01/23/2026	1067585882	CMS
Pharming Healthcare, Inc.	$29.86	04/11/2024	Food and Beverage	Undisputed	01/23/2026	1132141016	CMS
Regeneron Healthcare Solutions, Inc.	$26.40	01/22/2024	Food and Beverage	Undisputed	01/23/2026	1113995780	CMS
Regeneron Healthcare Solutions, Inc.	$22.58	05/29/2024	Food and Beverage	Undisputed	01/23/2026	1113995782	CMS
Regeneron Healthcare Solutions, Inc.	$17.20	08/21/2024	Food and Beverage	Undisputed	01/23/2026	1113995784	CMS
Regeneron Healthcare Solutions, Inc.	$21.76	11/04/2024	Food and Beverage	Undisputed	01/23/2026	1113995786	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$21.00	05/23/2024	Food and Beverage	Undisputed	01/23/2026	1137464726	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$26.36	06/20/2024	Food and Beverage	Undisputed	01/23/2026	1137464730	CMS
Takeda Pharmaceuticals U.S.A., Inc.	$32.30	11/21/2024	Food and Beverage	Undisputed	01/23/2026	1137464734	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

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.