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

JOHN LEIGHTON

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1861461162
CMS profile
786394
Location
PHILADELPHIA, PA

General Payments · PY2019–2024

$1,586.88

  • Reported across 29 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$1,266.77

17 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.

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $649.76 14
Consulting Fee $525.00 1
Education $92.01 2

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $12.55 1
PY2021 $11.92 1
PY2023 $295.64 10
PY2024 $1,266.77 17

Payment records · PY2024 (17)

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

Program year 2024 201920212023 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
Astellas Pharma US Inc $74.99 06/03/2024 Education Undisputed 01/23/2026 1139342930 CMS
Astellas Pharma US Inc $15.22 10/28/2024 Food and Beverage Undisputed 01/23/2026 1139415045 CMS
Astellas Pharma US Inc $124.60 12/05/2024 Food and Beverage Undisputed 01/23/2026 1139452450 CMS
AstraZeneca Pharmaceuticals LP $525.00 03/06/2024 Consulting Fee Undisputed 01/23/2026 1104204227 CMS
E.R. Squibb & Sons, L.L.C. $63.47 04/18/2024 Food and Beverage Undisputed 01/23/2026 1101768650 CMS
E.R. Squibb & Sons, L.L.C. $25.00 04/19/2024 Food and Beverage Undisputed 01/23/2026 1101768540 CMS
Genentech USA, Inc. $33.54 11/08/2024 Food and Beverage Undisputed 01/23/2026 1133035481 CMS
Immunocore Limited $21.80 02/20/2024 Food and Beverage Undisputed 01/23/2026 1103097155 CMS
Janssen Biotech, Inc. $117.18 06/19/2024 Food and Beverage Undisputed 01/23/2026 1078586854 CMS
Novartis Pharmaceuticals Corporation $18.92 05/06/2024 Food and Beverage Undisputed 01/23/2026 1087154524 CMS
PFIZER INC. $23.68 05/07/2024 Food and Beverage Undisputed 01/23/2026 1131313681 CMS
PFIZER INC. $16.00 05/17/2024 Food and Beverage Undisputed 01/23/2026 1131828878 CMS
Pharmacosmos Therapeutics Inc. $16.81 06/05/2024 Food and Beverage Undisputed 01/23/2026 1154823527 CMS
Regeneron Healthcare Solutions, Inc. $17.02 09/04/2024 Education Undisputed 01/23/2026 1114098807 CMS
SOBI, INC $21.04 03/14/2024 Food and Beverage Undisputed 01/23/2026 1141413892 CMS
SOBI, INC $124.89 05/23/2024 Food and Beverage Undisputed 01/23/2026 1141430339 CMS
Takeda Pharmaceuticals U.S.A., Inc. $27.61 04/03/2024 Food and Beverage Undisputed 01/23/2026 1144961630 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
2019, 2021, 2023, 2024
Source files
Dataset page · Bulk file · PY2019 , PY2021 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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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.