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

KENNETH W MAHAFFEY

Allopathic & Osteopathic Physicians Internal Medicine Cardiovascular Disease

NPI
1659455707
CMS profile
166274
Location
STANFORD, 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 · PY2024 · Entire year

$76,674.38

51 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

PY2024 · entire year · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $45,695.00 15
Travel and Lodging $29,891.41 16
Food and Beverage $1,087.97 20

By paying entity

PY2024 · entire year · 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
ModernaTX, Inc. $4,500.00 3
Novo Nordisk AS $2,941.13 6

Payment records · PY2024

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

General Payments · PY2024 · Physicians and non-physician practitioners · CMS publication 2026-06-30

51 matching records · $76,674.38 reported total · 0 disputed

Nature of payment: All payment types

Records imported here (UTC).

Link to these filtered records · CMS source dataset ↗

Download all 51 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 51.

Paying entityAmountDate Nature of paymentDispute statusPublication flagsPublished Record IDSource
E.R. Squibb & Sons, L.L.C. $3,640.0011/13/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450974 CMS
E.R. Squibb & Sons, L.L.C. $4,550.0011/07/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450913 CMS
ModernaTX, Inc. $1,250.0010/09/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261152554807 CMS
Eli Lilly and Company $3,800.0009/30/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261135106403 CMS
Novo Nordisk AS $473.2808/30/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261096552243 CMS
Novo Nordisk AS $42.7508/30/2024 Food and Beverage No dispute reported Delay: No
Change: NEW
06/30/20261156050569 CMS
Janssen Research & Development, LLC $57.5408/29/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587541 CMS
Janssen Research & Development, LLC $38.2308/28/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587587 CMS
ModernaTX, Inc. $1,500.0008/21/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261152554803 CMS
Novo Nordisk AS $858.0006/24/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261096552343 CMS
Novo Nordisk AS $1,093.3306/24/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261096552419 CMS
Novo Nordisk AS $300.4606/24/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261096553061 CMS
Novo Nordisk AS $173.3106/24/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261096553085 CMS
Eli Lilly and Company $4,400.0005/31/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261135131388 CMS
E.R. Squibb & Sons, L.L.C. $4,160.0005/17/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450871 CMS
E.R. Squibb & Sons, L.L.C. $2,300.0005/07/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450875 CMS
E.R. Squibb & Sons, L.L.C. $5,200.0004/29/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450778 CMS
Janssen Research & Development, LLC $48.1104/26/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587537 CMS
Janssen Research & Development, LLC $9.8904/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587539 CMS
Janssen Research & Development, LLC $148.3604/26/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587547 CMS
Janssen Research & Development, LLC $100.0004/26/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587553 CMS
Janssen Research & Development, LLC $148.3604/26/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587555 CMS
Janssen Research & Development, LLC $9.8904/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587557 CMS
Janssen Research & Development, LLC $40.0304/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587559 CMS
Janssen Research & Development, LLC $16.1904/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587565 CMS
Janssen Research & Development, LLC $48.2204/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587569 CMS
Janssen Research & Development, LLC $100.0004/26/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587575 CMS
Janssen Research & Development, LLC $148.3604/26/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587591 CMS
Janssen Research & Development, LLC $70.6304/26/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587593 CMS
Janssen Research & Development, LLC $14,068.5804/13/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587579 CMS
Janssen Research & Development, LLC $83.5104/06/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587545 CMS
Janssen Research & Development, LLC $33.3103/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587523 CMS
Janssen Research & Development, LLC $131.7903/16/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587581 CMS
Janssen Research & Development, LLC $54.0802/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587551 CMS
Janssen Research & Development, LLC $27.1902/21/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587577 CMS
Janssen Research & Development, LLC $178.7502/19/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587525 CMS
Janssen Research & Development, LLC $10.8302/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587527 CMS
Janssen Research & Development, LLC $178.7502/19/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587529 CMS
Janssen Research & Development, LLC $178.7502/19/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587531 CMS
Janssen Research & Development, LLC $137.0002/19/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587533 CMS
Janssen Research & Development, LLC $10.8302/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587535 CMS
Janssen Research & Development, LLC $43.3302/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587567 CMS
Janssen Research & Development, LLC $110.5902/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587583 CMS
Janssen Research & Development, LLC $75.8302/19/2024 Food and Beverage No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587585 CMS
ModernaTX, Inc. $1,750.0002/07/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261152554799 CMS
E.R. Squibb & Sons, L.L.C. $1,820.0002/01/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450825 CMS
Janssen Research & Development, LLC $11,731.3201/31/2024 Travel and Lodging No dispute reported Delay: No
Change: UNCHANGED
06/30/20261077587561 CMS
E.R. Squibb & Sons, L.L.C. $2,275.0001/23/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450748 CMS
E.R. Squibb & Sons, L.L.C. $1,900.0001/19/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450832 CMS
E.R. Squibb & Sons, L.L.C. $2,600.0001/02/2024 Consulting Fee No dispute reported Delay: No
Change: UNCHANGED
06/30/20261101450821 CMS

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $75,852.99 54
PY2020 $30,047.50 12
PY2021 $43,922.00 11
PY2022 $119,095.41 42
PY2023 $40,369.49 43
PY2024 $76,674.38 51
PY2025 $60,574.52 25

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
KENNETH W MAHAFFEY, NPI 1659455707. IndustryPayments, data edition 2026-07-26T04:22:22Z. https://industrypayments.org/provider/npi-1659455707.
APA 7
IndustryPayments. (2026). KENNETH W MAHAFFEY, NPI 1659455707 (Data edition 2026-07-26T04:22:22Z) [Data set]. https://industrypayments.org/provider/npi-1659455707
Bluebook
KENNETH W MAHAFFEY, NPI 1659455707, IndustryPayments (data edition 2026-07-26T04:22:22Z), https://industrypayments.org/provider/npi-1659455707.

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