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

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Filter and download payment records

General Payments · PY2023 · Entire year

$2,806.79

97 records · 0 disputed

Summary and payment records

  • CMS publication 2026-06-30
Read the payment records

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.
  • Methodology & Data — sourcing, labeling, and limitations.

Provider summaries generated . 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 ↗

By nature of payment

PY2023 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $2,687.34 95
Consulting Fee $119.45 2

By paying entity

PY2023 · entire year · sorted by reported total

Payment records · PY2023

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

General Payments · PY2023 · Physicians and non-physician practitioners · CMS publication 2026-06-30

97 matching records · $2,806.79 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 97 matching records (CSV)

CSV includes CMS record IDs, source and publication dates, the data edition, and a link to these filters. Formula-like text cells are prefixed with an apostrophe for spreadsheet safety.

Showing records 1–50 of 97.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Genentech USA, Inc. $20.5012/19/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040539291 CMS
PFIZER INC. $5.5812/19/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049491563 CMS
GENZYME CORPORATION $30.4712/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049997755 CMS
GlaxoSmithKline, LLC. $8.0812/13/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002633385 CMS
AstraZeneca Pharmaceuticals LP $25.8612/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011856277 CMS
AstraZeneca Pharmaceuticals LP $135.0012/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261015321741 CMS
AstraZeneca Pharmaceuticals LP $23.3112/05/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261015796365 CMS
GENZYME CORPORATION $26.0811/29/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049997751 CMS
GlaxoSmithKline, LLC. $8.6111/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002631479 CMS
GENZYME CORPORATION $24.5311/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049997739 CMS
AstraZeneca Pharmaceuticals LP $14.9011/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011581429 CMS
BioCryst US Sales Co., LLC $18.5511/08/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261012578141 CMS
Merck Sharp & Dohme LLC $25.5211/06/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261048326475 CMS
Octapharma USA, Inc. $25.7011/02/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261042715801 CMS
GlaxoSmithKline, LLC. $23.0811/01/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002633397 CMS
Inspire Medical Systems, Inc. $23.1110/31/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058765481 CMS
Amgen Inc. $36.4910/26/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261020106073 CMS
GENZYME CORPORATION $11.5010/26/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049997747 CMS
Grifols USA, LLC $21.0810/25/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011809879 CMS
Takeda Pharmaceuticals U.S.A., Inc. $35.4410/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261055327913 CMS
GlaxoSmithKline, LLC. $8.8610/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002633325 CMS
PFIZER INC. $38.2110/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050469173 CMS
Regeneron Healthcare Solutions, Inc. $26.7210/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026999070519 CMS
AstraZeneca Pharmaceuticals LP $33.9410/12/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011587457 CMS
Genentech USA, Inc. $24.0010/09/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040539243 CMS
CSL Behring $25.6110/05/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261042895311 CMS
GENZYME CORPORATION $8.2209/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049997717 CMS
Takeda Pharmaceuticals U.S.A., Inc. $27.3109/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261055327909 CMS
AbbVie Inc. $21.7309/27/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026996103165 CMS
AstraZeneca Pharmaceuticals LP $20.3009/20/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011646711 CMS
Genentech USA, Inc. $20.9409/19/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261040539273 CMS
NOVARTIS PHARMACEUTICALS CORPORATION $25.4009/14/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026993437059 CMS
Blueprint Medicines Corporation $24.0809/07/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261051255843 CMS
Novartis Pharmaceuticals Corporation $27.6608/30/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026991856875 CMS
GENZYME CORPORATION $23.8208/28/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049997685 CMS
Grifols USA, LLC $18.2908/24/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011809897 CMS
Takeda Pharmaceuticals U.S.A., Inc. $19.1508/23/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261055327905 CMS
CSL Behring $13.5708/21/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261042895219 CMS
CSL Behring $9.3408/21/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261042895227 CMS
Regeneron Healthcare Solutions, Inc. $16.1207/26/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026999070515 CMS
PFIZER INC. $27.1207/24/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261049542425 CMS
AstraZeneca Pharmaceuticals LP $18.1107/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261016043681 CMS
Optinose US, Inc. $22.1607/18/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261035107545 CMS
AstraZeneca Pharmaceuticals LP $36.7207/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261011570233 CMS
AstraZeneca Pharmaceuticals LP $114.9707/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261014282779 CMS
GlaxoSmithKline, LLC. $27.3707/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261002633349 CMS
PFIZER INC. $17.5007/17/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261050695633 CMS
ADMA BioManufacturing LLC $67.2307/10/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058971657 CMS
AbbVie Inc. $21.6107/10/2023 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026996103163 CMS
ADMA BioManufacturing LLC $52.2207/05/2023 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261058971653 CMS

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

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 and profile matching
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.

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.