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Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · CMS publication 2026-06-30 View official record

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

SAM S AHN

Allopathic & Osteopathic Physicians Internal Medicine Allergy & Immunology

NPI
1558423814
CMS profile
251791
Location
NAPA, CA

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 · PY2019–2025

  • CMS publication 2026-06-30

Latest program year · PY2025

$4,313.03

105 records · 0 disputed

Other CMS categories — not shown on this page

Research Payments

CMS also publishes Research Payments as a separate dataset. This site does not currently mirror it, and no research figure is shown on this page. This provider appears in that dataset.

“If you are a physician who served as a principal investigator on a research study, you may see the payments associated with that research study listed under your name. This does not necessarily mean the payments are attributed to you. The dollar amount of the record corresponds to the total payment; the amounts are not attributed to each individual on the record.”

— Centers for Medicare & Medicaid Services, Open Payments Frequently Asked Questions, FAQ #12224

These records are published by CMS and can be viewed on this provider’s official CMS record. View this provider on CMS Open Payments ↗

“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 paymentAmountRecords
Food and Beverage $2,546.73 102
Consulting Fee $1,666.31 2
Education $99.99 1

By paying entity

PY2025 · sorted by reported total

Paying entityAmountRecords
Genentech USA, Inc. $1,708.32 5
GENZYME CORPORATION $699.86 24
NOVARTIS PHARMACEUTICALS CORPORATION $215.89 8
GlaxoSmithKline, LLC. $183.35 16
Acerta Pharma LLC $181.28 8
CSL Behring $174.48 4
Takeda Pharmaceuticals U.S.A., Inc. $161.86 6
Amgen Inc. $161.41 7
BioCryst US Sales Co., LLC $103.24 4
SANOFI-AVENTIS U.S. LLC $99.99 1
Regeneron Healthcare Solutions, Inc. $97.05 4
Teva Pharmaceuticals USA, Inc. $85.51 3
Organon LLC $62.48 2
ADMA BioManufacturing LLC $61.31 1
Grifols USA, LLC $57.03 2
OptiNose US, Inc. $52.29 2
Ionis Pharmaceuticals, Inc. $48.57 2
Genentech, Inc. $31.23 1
Regeneron Pharmaceuticals, Inc. $29.60 1
Galderma Laboratories, L.P. $29.42 1
Pharming Healthcare, Inc. $25.42 1
Lilly USA, LLC $22.54 1
Kowa Pharmaceuticals America, Inc. $20.90 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
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
PY2025 $4,313.03 105

Payment records · PY2025 (105)

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

Program year 2025 201920202021202220232024 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
GENZYME CORPORATION $99.90 12/19/2025 Food and Beverage No dispute reported 06/30/2026 1233387169 CMS
GENZYME CORPORATION $12.48 12/09/2025 Food and Beverage No dispute reported 06/30/2026 1233387173 CMS
GlaxoSmithKline, LLC. $11.53 12/09/2025 Food and Beverage No dispute reported 06/30/2026 1190636247 CMS
GlaxoSmithKline, LLC. $22.69 12/04/2025 Food and Beverage No dispute reported 06/30/2026 1191593586 CMS
GENZYME CORPORATION $10.00 12/01/2025 Food and Beverage No dispute reported 06/30/2026 1233387159 CMS
SANOFI-AVENTIS U.S. LLC $99.99 12/01/2025 Education No dispute reported 06/30/2026 1233387165 CMS
Ionis Pharmaceuticals, Inc. $27.42 11/19/2025 Food and Beverage No dispute reported 06/30/2026 1246779197 CMS
Novartis Pharmaceuticals Corporation $21.81 11/18/2025 Food and Beverage No dispute reported 06/30/2026 1200025323 CMS
BioCryst US Sales Co., LLC $28.68 11/13/2025 Food and Beverage No dispute reported 06/30/2026 1222002824 CMS
Galderma Laboratories, L.P. $29.42 11/12/2025 Food and Beverage No dispute reported 06/30/2026 1234612365 CMS
GlaxoSmithKline, LLC. $7.37 11/12/2025 Food and Beverage No dispute reported 06/30/2026 1190889319 CMS
GlaxoSmithKline, LLC. $2.40 11/11/2025 Food and Beverage No dispute reported 06/30/2026 1190568010 CMS
GlaxoSmithKline, LLC. $8.17 11/10/2025 Food and Beverage No dispute reported 06/30/2026 1190599370 CMS
Amgen Inc. $27.25 11/06/2025 Food and Beverage No dispute reported 06/30/2026 1228282881 CMS
Amgen Inc. $12.68 11/05/2025 Food and Beverage No dispute reported 06/30/2026 1227163312 CMS
Regeneron Healthcare Solutions, Inc. $29.66 11/05/2025 Food and Beverage No dispute reported 06/30/2026 1212858676 CMS
Teva Pharmaceuticals USA, Inc. $26.37 11/05/2025 Food and Beverage No dispute reported 06/30/2026 1247433901 CMS
GENZYME CORPORATION $28.32 10/28/2025 Food and Beverage No dispute reported 06/30/2026 1233387155 CMS
CSL Behring $114.05 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1232343108 CMS
Takeda Pharmaceuticals U.S.A., Inc. $26.68 10/27/2025 Food and Beverage No dispute reported 06/30/2026 1223906242 CMS
GENZYME CORPORATION $6.78 10/20/2025 Food and Beverage No dispute reported 06/30/2026 1233387175 CMS
Novartis Pharmaceuticals Corporation $32.74 10/16/2025 Food and Beverage No dispute reported 06/30/2026 1200025317 CMS
Genentech USA, Inc. $24.17 10/13/2025 Food and Beverage No dispute reported 06/30/2026 1211581930 CMS
Takeda Pharmaceuticals U.S.A., Inc. $26.90 10/08/2025 Food and Beverage No dispute reported 06/30/2026 1223907424 CMS
GENZYME CORPORATION $27.90 10/06/2025 Food and Beverage No dispute reported 06/30/2026 1233387151 CMS
Organon LLC $31.05 10/01/2025 Food and Beverage No dispute reported 06/30/2026 1237733449 CMS
GENZYME CORPORATION $11.14 09/29/2025 Food and Beverage No dispute reported 06/30/2026 1233387143 CMS
GENZYME CORPORATION $7.16 09/25/2025 Food and Beverage No dispute reported 06/30/2026 1233387149 CMS
Ionis Pharmaceuticals, Inc. $21.15 09/16/2025 Food and Beverage No dispute reported 06/30/2026 1246779188 CMS
Novartis Pharmaceuticals Corporation $24.34 09/15/2025 Food and Beverage No dispute reported 06/30/2026 1200149923 CMS
Grifols USA, LLC $33.00 09/10/2025 Food and Beverage No dispute reported 06/30/2026 1249530182 CMS
Regeneron Healthcare Solutions, Inc. $28.76 09/03/2025 Food and Beverage No dispute reported 06/30/2026 1212858674 CMS
CSL Behring $11.67 08/27/2025 Food and Beverage No dispute reported 06/30/2026 1232343074 CMS
BioCryst US Sales Co., LLC $21.96 08/25/2025 Food and Beverage No dispute reported 06/30/2026 1222013189 CMS
GlaxoSmithKline, LLC. $25.59 08/19/2025 Food and Beverage No dispute reported 06/30/2026 1190353136 CMS
GlaxoSmithKline, LLC. $0.44 08/19/2025 Food and Beverage No dispute reported 06/30/2026 1190970786 CMS
Novartis Pharmaceuticals Corporation $2.67 08/19/2025 Food and Beverage No dispute reported 06/30/2026 1200149919 CMS
GENZYME CORPORATION $8.58 08/18/2025 Food and Beverage No dispute reported 06/30/2026 1233387133 CMS
GlaxoSmithKline, LLC. $8.60 08/17/2025 Food and Beverage No dispute reported 06/30/2026 1190758608 CMS
AstraZeneca Pharmaceuticals LP $20.04 08/14/2025 Food and Beverage No dispute reported 06/30/2026 1206582868 CMS
Optinose US, Inc. $27.04 08/13/2025 Food and Beverage No dispute reported 06/30/2026 1163258462 CMS
AstraZeneca Pharmaceuticals LP $28.21 08/12/2025 Food and Beverage No dispute reported 06/30/2026 1206863751 CMS
GENZYME CORPORATION $27.87 08/11/2025 Food and Beverage No dispute reported 06/30/2026 1233387127 CMS
Takeda Pharmaceuticals U.S.A., Inc. $25.72 08/04/2025 Food and Beverage No dispute reported 06/30/2026 1223900868 CMS
GENZYME CORPORATION $24.47 07/30/2025 Food and Beverage No dispute reported 06/30/2026 1233387121 CMS
GENZYME CORPORATION $12.21 07/30/2025 Food and Beverage No dispute reported 06/30/2026 1233387123 CMS
Teva Pharmaceuticals USA, Inc. $26.86 07/29/2025 Food and Beverage No dispute reported 06/30/2026 1247433899 CMS
Genentech USA, Inc. $1,605.00 07/26/2025 Consulting Fee No dispute reported 06/30/2026 1211581938 CMS
GlaxoSmithKline, LLC. $5.63 07/24/2025 Food and Beverage No dispute reported 06/30/2026 1190663177 CMS
GlaxoSmithKline, LLC. $6.20 07/23/2025 Food and Beverage No dispute reported 06/30/2026 1190621737 CMS
GlaxoSmithKline, LLC. $0.33 07/23/2025 Food and Beverage No dispute reported 06/30/2026 1191452350 CMS
Amgen Inc. $18.45 07/21/2025 Food and Beverage No dispute reported 06/30/2026 1228282879 CMS
AstraZeneca Pharmaceuticals LP $20.68 07/18/2025 Food and Beverage No dispute reported 06/30/2026 1206745662 CMS
AstraZeneca Pharmaceuticals LP $20.50 07/16/2025 Food and Beverage No dispute reported 06/30/2026 1206960777 CMS
CSL Behring $19.12 06/24/2025 Food and Beverage No dispute reported 06/30/2026 1232343066 CMS
GENZYME CORPORATION $10.80 06/23/2025 Food and Beverage No dispute reported 06/30/2026 1233387095 CMS
Takeda Pharmaceuticals U.S.A., Inc. $29.63 06/18/2025 Food and Beverage No dispute reported 06/30/2026 1223919640 CMS
GENZYME CORPORATION $10.15 06/10/2025 Food and Beverage No dispute reported 06/30/2026 1233387087 CMS
GENZYME CORPORATION $130.33 06/09/2025 Food and Beverage No dispute reported 06/30/2026 1233387097 CMS
Grifols USA, LLC $24.03 06/06/2025 Food and Beverage No dispute reported 06/30/2026 1249530186 CMS
Novartis Pharmaceuticals Corporation $72.54 05/30/2025 Food and Beverage No dispute reported 06/30/2026 1200149909 CMS
Novartis Pharmaceuticals Corporation $30.86 05/28/2025 Food and Beverage No dispute reported 06/30/2026 1200149915 CMS
Amgen Inc. $26.84 05/21/2025 Food and Beverage No dispute reported 06/30/2026 1228282883 CMS
Kowa Pharmaceuticals America, Inc. $20.90 05/19/2025 Food and Beverage No dispute reported 06/30/2026 1243072015 CMS
GENZYME CORPORATION $46.64 05/16/2025 Food and Beverage No dispute reported 06/30/2026 1233387093 CMS
Regeneron Pharmaceuticals, Inc. $29.60 05/15/2025 Food and Beverage No dispute reported 06/30/2026 1213235055 CMS
Novartis Pharmaceuticals Corporation $2.96 05/08/2025 Food and Beverage No dispute reported 06/30/2026 1200149905 CMS
Novartis Pharmaceuticals Corporation $27.97 05/08/2025 Food and Beverage No dispute reported 06/30/2026 1200149907 CMS
GlaxoSmithKline, LLC. $28.23 05/07/2025 Food and Beverage No dispute reported 06/30/2026 1190614254 CMS
GENZYME CORPORATION $31.95 04/30/2025 Food and Beverage No dispute reported 06/30/2026 1233387071 CMS
AstraZeneca Pharmaceuticals LP $30.26 04/24/2025 Food and Beverage No dispute reported 06/30/2026 1207283108 CMS
Amgen Inc. $24.75 04/23/2025 Food and Beverage No dispute reported 06/30/2026 1228282875 CMS
GENZYME CORPORATION $100.16 04/23/2025 Food and Beverage No dispute reported 06/30/2026 1233387079 CMS
Genentech USA, Inc. $27.54 04/09/2025 Food and Beverage No dispute reported 06/30/2026 1211581927 CMS
GENZYME CORPORATION $8.57 04/08/2025 Food and Beverage No dispute reported 06/30/2026 1233387229 CMS
Regeneron Healthcare Solutions, Inc. $17.63 04/08/2025 Food and Beverage No dispute reported 06/30/2026 1212858672 CMS
Pharming Healthcare, Inc. $25.42 04/03/2025 Food and Beverage No dispute reported 06/30/2026 1200795365 CMS
Takeda Pharmaceuticals U.S.A., Inc. $25.70 04/02/2025 Food and Beverage No dispute reported 06/30/2026 1223900684 CMS
Teva Pharmaceuticals USA, Inc. $32.28 04/02/2025 Food and Beverage No dispute reported 06/30/2026 1247433897 CMS
AstraZeneca Pharmaceuticals LP $23.15 04/01/2025 Food and Beverage No dispute reported 06/30/2026 1206358708 CMS
CSL Behring $29.64 03/31/2025 Food and Beverage No dispute reported 06/30/2026 1232343040 CMS
GlaxoSmithKline, LLC. $4.78 03/25/2025 Food and Beverage No dispute reported 06/30/2026 1191704195 CMS
Takeda Pharmaceuticals U.S.A., Inc. $27.23 03/25/2025 Food and Beverage No dispute reported 06/30/2026 1223909173 CMS
AstraZeneca Pharmaceuticals LP $24.75 03/19/2025 Food and Beverage No dispute reported 06/30/2026 1206579146 CMS
Genentech USA, Inc. $32.37 03/17/2025 Food and Beverage No dispute reported 06/30/2026 1211581924 CMS
GENZYME CORPORATION $22.04 03/12/2025 Food and Beverage No dispute reported 06/30/2026 1233387215 CMS
BioCryst US Sales Co., LLC $24.22 03/10/2025 Food and Beverage No dispute reported 06/30/2026 1222027054 CMS
Amgen Inc. $25.29 02/26/2025 Food and Beverage No dispute reported 06/30/2026 1228282885 CMS
GlaxoSmithKline, LLC. $11.47 02/24/2025 Food and Beverage No dispute reported 06/30/2026 1190888055 CMS
Optinose US, Inc. $25.25 02/19/2025 Food and Beverage No dispute reported 06/30/2026 1163258456 CMS
GlaxoSmithKline, LLC. $14.70 02/18/2025 Food and Beverage No dispute reported 06/30/2026 1190724060 CMS
ADMA BioManufacturing LLC $61.31 02/12/2025 Consulting Fee No dispute reported 06/30/2026 1211423314 CMS
Genentech, Inc. $31.23 02/11/2025 Food and Beverage No dispute reported 06/30/2026 1211581933 CMS
Amgen Inc. $26.15 02/06/2025 Food and Beverage No dispute reported 06/30/2026 1228282877 CMS
GENZYME CORPORATION $15.20 02/06/2025 Food and Beverage No dispute reported 06/30/2026 1233387203 CMS
GENZYME CORPORATION $30.96 02/05/2025 Food and Beverage No dispute reported 06/30/2026 1233387207 CMS
Organon LLC $31.43 02/04/2025 Food and Beverage No dispute reported 06/30/2026 1237733451 CMS
AstraZeneca Pharmaceuticals LP $13.69 01/27/2025 Food and Beverage No dispute reported 06/30/2026 1206405930 CMS
Regeneron Healthcare Solutions, Inc. $21.00 01/22/2025 Food and Beverage No dispute reported 06/30/2026 1212858670 CMS
Lilly USA, LLC $22.54 01/21/2025 Food and Beverage No dispute reported 06/30/2026 1186897357 CMS
BioCryst US Sales Co., LLC $28.38 01/15/2025 Food and Beverage No dispute reported 06/30/2026 1222027051 CMS
GENZYME CORPORATION $8.28 01/13/2025 Food and Beverage No dispute reported 06/30/2026 1233387201 CMS
Genentech USA, Inc. $19.24 01/08/2025 Food and Beverage No dispute reported 06/30/2026 1211581920 CMS
GENZYME CORPORATION $7.97 01/08/2025 Food and Beverage No dispute reported 06/30/2026 1233387187 CMS
GlaxoSmithKline, LLC. $25.22 01/08/2025 Food and Beverage No dispute reported 06/30/2026 1190561900 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
2019, 2020, 2021, 2022, 2023, 2024, 2025
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.

Cite this record.

Permalink https://industrypayments.org/provider/npi-1558423814

Plain
SAM S AHN, NPI 1558423814. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1558423814.
APA 7
IndustryPayments. (2026). SAM S AHN, NPI 1558423814 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1558423814
Bluebook
SAM S AHN, NPI 1558423814, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1558423814.

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