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

BARRY IZENSTEIN

Allopathic & Osteopathic Physicians Internal Medicine Endocrinology, Diabetes & Metabolism

NPI
1346237583
CMS profile
288085
Location
SPRINGFIELD, MA

General Payments · PY2018–2024

$8,263.03

  • Reported across 445 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$681.11

32 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 $681.11 32

By paying entity

PY2024 · sorted by reported total

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $1,560.66 88
PY2019 $1,547.40 86
PY2020 $751.16 46
PY2021 $1,274.45 71
PY2022 $1,083.82 57
PY2023 $1,364.43 65
PY2024 $681.11 32

Payment records · PY2024 (32)

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
Abbott Laboratories $17.53 03/12/2024 Food and Beverage Undisputed 01/23/2026 1124998342 CMS
Abbott Laboratories $24.07 08/21/2024 Food and Beverage Undisputed 01/23/2026 1124998344 CMS
ABBVIE INC. $23.83 05/29/2024 Food and Beverage Undisputed 01/23/2026 1103975264 CMS
ABBVIE INC. $16.12 07/10/2024 Food and Beverage Undisputed 01/23/2026 1103975266 CMS
Amgen Inc. $21.79 04/19/2024 Food and Beverage Undisputed 01/23/2026 1111606579 CMS
Antares Pharma, Inc. $27.08 05/01/2024 Food and Beverage Undisputed 01/23/2026 1146464913 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $20.24 02/22/2024 Food and Beverage Undisputed 01/23/2026 1117971663 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $20.88 03/15/2024 Food and Beverage Undisputed 01/23/2026 1117971665 CMS
Boehringer Ingelheim Pharmaceuticals, Inc. $18.32 05/15/2024 Food and Beverage Undisputed 01/23/2026 1117971661 CMS
Chiesi USA, Inc. $22.36 01/03/2024 Food and Beverage Undisputed 01/23/2026 1151809330 CMS
Corcept Therapeutics $19.04 05/08/2024 Food and Beverage Undisputed 01/23/2026 1117735666 CMS
Esperion Therapeutics, Inc. $17.63 02/16/2024 Food and Beverage Undisputed 01/23/2026 1129439746 CMS
Lilly USA, LLC $14.46 01/12/2024 Food and Beverage Undisputed 01/23/2026 1136064258 CMS
Lilly USA, LLC $16.18 02/28/2024 Food and Beverage Undisputed 01/23/2026 1136065518 CMS
Lilly USA, LLC $18.35 03/20/2024 Food and Beverage Undisputed 01/23/2026 1136063310 CMS
Lilly USA, LLC $27.60 04/04/2024 Food and Beverage Undisputed 01/23/2026 1136065516 CMS
Lilly USA, LLC $14.02 05/20/2024 Food and Beverage Undisputed 01/23/2026 1136074511 CMS
Lilly USA, LLC $16.70 05/22/2024 Food and Beverage Undisputed 01/23/2026 1136064256 CMS
Lilly USA, LLC $23.28 06/26/2024 Food and Beverage Undisputed 01/23/2026 1136063158 CMS
Lilly USA, LLC $27.26 07/01/2024 Food and Beverage Undisputed 01/23/2026 1136063308 CMS
Novo Nordisk Inc $20.85 01/10/2024 Food and Beverage Undisputed 01/23/2026 1096767336 CMS
Novo Nordisk Inc $17.66 02/14/2024 Food and Beverage Undisputed 01/23/2026 1096879345 CMS
Novo Nordisk Inc $21.62 03/08/2024 Food and Beverage Undisputed 01/23/2026 1096916482 CMS
Novo Nordisk Inc $22.11 04/10/2024 Food and Beverage Undisputed 01/23/2026 1096674969 CMS
Novo Nordisk Inc $22.06 05/24/2024 Food and Beverage Undisputed 01/23/2026 1096615190 CMS
Novo Nordisk Inc $23.80 06/12/2024 Food and Beverage Undisputed 01/23/2026 1097201418 CMS
Novo Nordisk Inc $21.69 06/14/2024 Food and Beverage Undisputed 01/23/2026 1096621092 CMS
Phathom Pharmaceuticals, Inc. $21.71 04/26/2024 Food and Beverage Undisputed 01/23/2026 1151075586 CMS
Radius Health, Inc. $29.42 03/13/2024 Food and Beverage Undisputed 01/23/2026 1089937753 CMS
Tandem Diabetes Care, Inc. $22.93 05/03/2024 Food and Beverage Undisputed 01/23/2026 1138750373 CMS
Tandem Diabetes Care, Inc. $29.67 08/07/2024 Food and Beverage Undisputed 01/23/2026 1138746961 CMS
Xeris Pharmaceuticals, Inc. $20.85 01/05/2024 Food and Beverage Undisputed 01/23/2026 1144588276 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

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