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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General Payments · PY2021 · Entire year

$3,105.54

77 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

PY2021 · entire year · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,723.55 69
Consulting Fee $1,375.00 1
Education $6.99 7

By paying entity

PY2021 · entire year · sorted by reported total

Payment records · PY2021

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

General Payments · PY2021 · Physicians and non-physician practitioners · CMS publication 2026-06-30

77 matching records · $3,105.54 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 77 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 77.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
Octapharma USA, Inc. $14.9912/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026812973115 CMS
Genentech USA, Inc. $16.5112/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835972677 CMS
CSL Behring $21.9112/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154479 CMS
GENZYME CORPORATION $19.8712/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843572797 CMS
CSL Behring $22.7312/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154473 CMS
Genentech USA, Inc. $16.8312/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835972701 CMS
GlaxoSmithKline, LLC. $28.2212/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802011311 CMS
GlaxoSmithKline, LLC. $7.6012/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802868867 CMS
GENZYME CORPORATION $110.2912/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843572809 CMS
GlaxoSmithKline, LLC. $30.8311/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802154291 CMS
CSL Behring $16.8111/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154467 CMS
CSL Behring $0.7111/15/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154413 CMS
ALK-Abello, Inc $19.5411/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809200683 CMS
Merck Sharp & Dohme Corporation $18.8311/03/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026848557711 CMS
AstraZeneca Pharmaceuticals LP $23.1610/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829283751 CMS
CSL Behring $10.5010/28/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154449 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $28.1510/25/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763738392 CMS
AstraZeneca Pharmaceuticals LP $18.9110/20/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829833509 CMS
CSL Behring $18.8910/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154443 CMS
Optinose US, Inc. $21.3210/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026851642305 CMS
Novartis Pharmaceuticals Corporation $22.8710/07/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026812580489 CMS
GlaxoSmithKline, LLC. $27.5310/06/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026801635734 CMS
Regeneron Healthcare Solutions, Inc. $26.6909/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809554229 CMS
Genentech USA, Inc. $15.1109/29/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835972699 CMS
UCB, Inc. $27.7109/16/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026807321195 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $19.1409/15/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763738394 CMS
GlaxoSmithKline, LLC. $25.1509/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026802928789 CMS
GENZYME CORPORATION $17.3509/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843572763 CMS
BioCryst US Sales Co., LLC $23.4708/23/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026849108249 CMS
CSL Behring $0.7108/19/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154389 CMS
CSL Behring $0.6408/19/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154395 CMS
Genentech USA, Inc. $21.1808/13/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835972695 CMS
PFIZER INC. $13.8608/11/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026832791940 CMS
Optinose US, Inc. $21.6308/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026851642261 CMS
Bio Products Laboratory USA, Inc. $22.3308/05/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026786653877 CMS
Teva Pharmaceuticals USA, Inc. $20.9007/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026839712729 CMS
PFIZER INC. $26.1907/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026833282435 CMS
AIMMUNE THERAPEUTICS, INC. $13.7307/08/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026850425059 CMS
AstraZeneca Pharmaceuticals LP $14.6207/01/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026829749251 CMS
Genentech USA, Inc. $16.6906/30/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835972689 CMS
Genentech USA, Inc. $24.6206/24/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026835972693 CMS
Regeneron Healthcare Solutions, Inc. $124.5606/22/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026809554227 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $24.0306/17/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026763738396 CMS
kaleo, Inc. $14.5406/14/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026832113049 CMS
CSL Behring $0.7106/10/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154377 CMS
CSL Behring $1.0906/10/2021 Education No dispute reported Delay: No
Change: UNCHANGED
06/30/2026820154383 CMS
GENZYME CORPORATION $24.9106/09/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026843572735 CMS
Teva Pharmaceuticals USA, Inc. $25.4105/27/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026839712727 CMS
Cardiovascular Systems Inc. $22.8905/26/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026852939723 CMS
Teva Pharmaceuticals USA, Inc. $21.3505/21/2021 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/2026839712725 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.