IndustryPayments
Official source Data mirrored from Centers for Medicare & Medicaid Services Open Payments · General Payments · as published 2026-01-23 View official record Methodology

Covered recipient · General Payments record

KENNETH W MAHAFFEY

Allopathic & Osteopathic Physicians Internal Medicine Cardiovascular Disease

NPI
1659455707
CMS profile
166274
Location
STANFORD, CA

General Payments · PY2018–2024

$496,412.54

  • Reported across 261 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$76,631.63

50 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.

Related groups: Cardiovascular Disease CA All categories

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $45,695.00 15
Travel and Lodging $29,891.41 16
Food and Beverage $1,045.22 19

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
E.R. Squibb & Sons, L.L.C. $32,995.00 10
Janssen Research & Development, LLC $28,038.25 30
Eli Lilly and Company $8,200.00 2
Moderna TX, Inc. $4,500.00 3
Novo Nordisk AS $2,898.38 5

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $110,746.87 56
PY2019 $75,852.99 54
PY2020 $30,047.50 12
PY2021 $43,922.00 11
PY2022 $119,031.04 41
PY2023 $40,180.51 37
PY2024 $76,631.63 50

Payment records · PY2024 (50)

Sorted by paying entity, then date · as published by CMS

Program year 2024 201820192020202120222023 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
E.R. Squibb & Sons, L.L.C. $2,600.00 01/02/2024 Consulting Fee Undisputed 01/23/2026 1101450821 CMS
E.R. Squibb & Sons, L.L.C. $4,550.00 01/02/2024 Consulting Fee Undisputed 01/23/2026 1101450828 CMS
E.R. Squibb & Sons, L.L.C. $1,900.00 01/19/2024 Consulting Fee Undisputed 01/23/2026 1101450832 CMS
E.R. Squibb & Sons, L.L.C. $2,275.00 01/23/2024 Consulting Fee Undisputed 01/23/2026 1101450748 CMS
E.R. Squibb & Sons, L.L.C. $1,820.00 02/01/2024 Consulting Fee Undisputed 01/23/2026 1101450825 CMS
E.R. Squibb & Sons, L.L.C. $5,200.00 04/29/2024 Consulting Fee Undisputed 01/23/2026 1101450778 CMS
E.R. Squibb & Sons, L.L.C. $2,300.00 05/07/2024 Consulting Fee Undisputed 01/23/2026 1101450875 CMS
E.R. Squibb & Sons, L.L.C. $4,160.00 05/17/2024 Consulting Fee Undisputed 01/23/2026 1101450871 CMS
E.R. Squibb & Sons, L.L.C. $4,550.00 11/07/2024 Consulting Fee Undisputed 01/23/2026 1101450913 CMS
E.R. Squibb & Sons, L.L.C. $3,640.00 11/13/2024 Consulting Fee Undisputed 01/23/2026 1101450974 CMS
Eli Lilly and Company $4,400.00 05/31/2024 Consulting Fee Undisputed 01/23/2026 1135131388 CMS
Eli Lilly and Company $3,800.00 09/30/2024 Consulting Fee Undisputed 01/23/2026 1135106403 CMS
Janssen Research & Development, LLC $11,731.32 01/31/2024 Travel and Lodging Undisputed 01/23/2026 1077587561 CMS
Janssen Research & Development, LLC $178.75 02/19/2024 Travel and Lodging Undisputed 01/23/2026 1077587525 CMS
Janssen Research & Development, LLC $10.83 02/19/2024 Food and Beverage Undisputed 01/23/2026 1077587527 CMS
Janssen Research & Development, LLC $178.75 02/19/2024 Travel and Lodging Undisputed 01/23/2026 1077587529 CMS
Janssen Research & Development, LLC $178.75 02/19/2024 Travel and Lodging Undisputed 01/23/2026 1077587531 CMS
Janssen Research & Development, LLC $137.00 02/19/2024 Travel and Lodging Undisputed 01/23/2026 1077587533 CMS
Janssen Research & Development, LLC $10.83 02/19/2024 Food and Beverage Undisputed 01/23/2026 1077587535 CMS
Janssen Research & Development, LLC $43.33 02/19/2024 Food and Beverage Undisputed 01/23/2026 1077587567 CMS
Janssen Research & Development, LLC $110.59 02/19/2024 Food and Beverage Undisputed 01/23/2026 1077587583 CMS
Janssen Research & Development, LLC $75.83 02/19/2024 Food and Beverage Undisputed 01/23/2026 1077587585 CMS
Janssen Research & Development, LLC $54.08 02/21/2024 Food and Beverage Undisputed 01/23/2026 1077587551 CMS
Janssen Research & Development, LLC $27.19 02/21/2024 Food and Beverage Undisputed 01/23/2026 1077587577 CMS
Janssen Research & Development, LLC $33.31 03/16/2024 Food and Beverage Undisputed 01/23/2026 1077587523 CMS
Janssen Research & Development, LLC $131.79 03/16/2024 Food and Beverage Undisputed 01/23/2026 1077587581 CMS
Janssen Research & Development, LLC $83.51 04/06/2024 Food and Beverage Undisputed 01/23/2026 1077587545 CMS
Janssen Research & Development, LLC $14,068.58 04/13/2024 Travel and Lodging Undisputed 01/23/2026 1077587579 CMS
Janssen Research & Development, LLC $48.11 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1077587537 CMS
Janssen Research & Development, LLC $9.89 04/26/2024 Food and Beverage Undisputed 01/23/2026 1077587539 CMS
Janssen Research & Development, LLC $148.36 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1077587547 CMS
Janssen Research & Development, LLC $100.00 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1077587553 CMS
Janssen Research & Development, LLC $148.36 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1077587555 CMS
Janssen Research & Development, LLC $9.89 04/26/2024 Food and Beverage Undisputed 01/23/2026 1077587557 CMS
Janssen Research & Development, LLC $40.03 04/26/2024 Food and Beverage Undisputed 01/23/2026 1077587559 CMS
Janssen Research & Development, LLC $16.19 04/26/2024 Food and Beverage Undisputed 01/23/2026 1077587565 CMS
Janssen Research & Development, LLC $48.22 04/26/2024 Food and Beverage Undisputed 01/23/2026 1077587569 CMS
Janssen Research & Development, LLC $100.00 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1077587575 CMS
Janssen Research & Development, LLC $148.36 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1077587591 CMS
Janssen Research & Development, LLC $70.63 04/26/2024 Food and Beverage Undisputed 01/23/2026 1077587593 CMS
Janssen Research & Development, LLC $38.23 08/28/2024 Food and Beverage Undisputed 01/23/2026 1077587587 CMS
Janssen Research & Development, LLC $57.54 08/29/2024 Food and Beverage Undisputed 01/23/2026 1077587541 CMS
ModernaTX, Inc. $1,750.00 02/07/2024 Consulting Fee Undisputed 01/23/2026 1152554799 CMS
ModernaTX, Inc. $1,500.00 08/21/2024 Consulting Fee Undisputed 01/23/2026 1152554803 CMS
ModernaTX, Inc. $1,250.00 10/09/2024 Consulting Fee Undisputed 01/23/2026 1152554807 CMS
Novo Nordisk AS $858.00 06/24/2024 Travel and Lodging Undisputed 01/23/2026 1096552343 CMS
Novo Nordisk AS $1,093.33 06/24/2024 Travel and Lodging Undisputed 01/23/2026 1096552419 CMS
Novo Nordisk AS $300.46 06/24/2024 Travel and Lodging Undisputed 01/23/2026 1096553061 CMS
Novo Nordisk AS $173.31 06/24/2024 Food and Beverage Undisputed 01/23/2026 1096553085 CMS
Novo Nordisk AS $473.28 08/30/2024 Travel and Lodging Undisputed 01/23/2026 1096552243 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.