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

MICHAEL F DEMYEN

Allopathic & Osteopathic Physicians Internal Medicine Gastroenterology

NPI
1568611465
CMS profile
25910
Location
DENVILLE, NJ

General Payments · PY2018–2024

$4,774.96

  • Reported across 299 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$1,271.39

71 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: Gastroenterology NJ All categories

By nature of payment

PY2024 · sorted by reported total

Nature of paymentAmountRecords
Food and Beverage $1,255.34 70
Education $16.05 1

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
IRONWOOD PHARMACEUTICALS, INC $237.63 11
Ardelyx, Inc. $230.86 8
ABBVIE INC. $169.70 13
Salix Pharmaceuticals, a division of Bausch Health US, LLC $152.14 11
Janssen Biotech, Inc. $92.99 6
Takeda Pharmaceuticals U.S.A., Inc. $92.21 5
AIMMUNE THERAPEUTICS, INC. $45.02 3
Madrigal Pharmaceuticals $39.90 1
Abbott Laboratories $37.95 2
Ferring Pharmaceuticals Inc. $33.44 2
GENZYME CORPORATION $30.93 2
Regeneron Healthcare Solutions, Inc. $29.44 2
UCB, Inc. $19.19 1
Celgene Corporation $16.88 1
Celltrion USA Inc. $16.05 1
Braintree Laboratories, Inc. $13.63 1
Merck Sharp & Dohme Corporation $13.43 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $782.29 56
PY2019 $771.90 58
PY2020 $224.00 16
PY2021 $785.13 40
PY2022 $460.78 27
PY2023 $479.47 31
PY2024 $1,271.39 71

Payment records · PY2024 (71)

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 $18.39 06/04/2024 Food and Beverage Undisputed 01/23/2026 1125129128 CMS
Abbott Laboratories $19.56 10/30/2024 Food and Beverage Undisputed 01/23/2026 1125129130 CMS
ABBVIE INC. $14.82 01/16/2024 Food and Beverage Undisputed 01/23/2026 1103624606 CMS
ABBVIE INC. $9.46 02/26/2024 Food and Beverage Undisputed 01/23/2026 1103624608 CMS
ABBVIE INC. $11.95 03/01/2024 Food and Beverage Undisputed 01/23/2026 1103624610 CMS
ABBVIE INC. $14.23 03/12/2024 Food and Beverage Undisputed 01/23/2026 1103624612 CMS
ABBVIE INC. $13.26 04/11/2024 Food and Beverage Undisputed 01/23/2026 1103624614 CMS
ABBVIE INC. $7.71 04/23/2024 Food and Beverage Undisputed 01/23/2026 1103624616 CMS
ABBVIE INC. $15.33 07/16/2024 Food and Beverage Undisputed 01/23/2026 1103624618 CMS
ABBVIE INC. $12.09 07/26/2024 Food and Beverage Undisputed 01/23/2026 1103624620 CMS
ABBVIE INC. $18.88 09/11/2024 Food and Beverage Undisputed 01/23/2026 1103624622 CMS
ABBVIE INC. $15.33 10/08/2024 Food and Beverage Undisputed 01/23/2026 1103624624 CMS
ABBVIE INC. $15.78 11/01/2024 Food and Beverage Undisputed 01/23/2026 1103624626 CMS
ABBVIE INC. $6.42 11/15/2024 Food and Beverage Undisputed 01/23/2026 1103624628 CMS
ABBVIE INC. $14.44 12/06/2024 Food and Beverage Undisputed 01/23/2026 1103624630 CMS
AIMMUNE THERAPEUTICS, INC. $15.24 01/16/2024 Food and Beverage Undisputed 01/23/2026 1146965398 CMS
AIMMUNE THERAPEUTICS, INC. $15.88 05/07/2024 Food and Beverage Undisputed 01/23/2026 1146985590 CMS
AIMMUNE THERAPEUTICS, INC. $13.90 05/08/2024 Food and Beverage Undisputed 01/23/2026 1146983869 CMS
Ardelyx, Inc. $15.61 02/12/2024 Food and Beverage Undisputed 01/23/2026 1146677806 CMS
Ardelyx, Inc. $14.09 03/25/2024 Food and Beverage Undisputed 01/23/2026 1146677808 CMS
Ardelyx, Inc. $15.45 04/22/2024 Food and Beverage Undisputed 01/23/2026 1146677810 CMS
Ardelyx, Inc. $18.64 05/20/2024 Food and Beverage Undisputed 01/23/2026 1146677812 CMS
Ardelyx, Inc. $14.35 06/17/2024 Food and Beverage Undisputed 01/23/2026 1146677814 CMS
Ardelyx, Inc. $9.40 10/25/2024 Food and Beverage Undisputed 01/23/2026 1146677816 CMS
Ardelyx, Inc. $18.31 11/07/2024 Food and Beverage Undisputed 01/23/2026 1146677818 CMS
Ardelyx, Inc. $125.01 11/21/2024 Food and Beverage Undisputed 01/23/2026 1146677820 CMS
Braintree Laboratories, Inc. $13.63 03/26/2024 Food and Beverage Undisputed 01/23/2026 1125513949 CMS
Celgene Corporation $16.88 07/11/2024 Food and Beverage Undisputed 01/23/2026 1101191887 CMS
Celltrion USA Inc. $16.05 09/05/2024 Education Undisputed 01/23/2026 1075850477 CMS
Ferring Pharmaceuticals Inc. $16.44 06/11/2024 Food and Beverage Undisputed 01/23/2026 1137472864 CMS
Ferring Pharmaceuticals Inc. $17.00 10/22/2024 Food and Beverage Undisputed 01/23/2026 1137472868 CMS
GENZYME CORPORATION $17.62 08/08/2024 Food and Beverage Undisputed 01/23/2026 1139919157 CMS
GENZYME CORPORATION $13.31 08/30/2024 Food and Beverage Undisputed 01/23/2026 1139919161 CMS
IRONWOOD PHARMACEUTICALS, INC $14.56 01/23/2024 Food and Beverage Undisputed 01/23/2026 1153736994 CMS
IRONWOOD PHARMACEUTICALS, INC $13.99 04/16/2024 Food and Beverage Undisputed 01/23/2026 1153745774 CMS
IRONWOOD PHARMACEUTICALS, INC $3.56 06/11/2024 Food and Beverage Undisputed 01/23/2026 1153719505 CMS
IRONWOOD PHARMACEUTICALS, INC $3.12 06/11/2024 Food and Beverage Undisputed 01/23/2026 1153754785 CMS
IRONWOOD PHARMACEUTICALS, INC $15.54 06/27/2024 Food and Beverage Undisputed 01/23/2026 1153768866 CMS
IRONWOOD PHARMACEUTICALS, INC $8.26 07/31/2024 Food and Beverage Undisputed 01/23/2026 1153727924 CMS
IRONWOOD PHARMACEUTICALS, INC $10.79 09/10/2024 Food and Beverage Undisputed 01/23/2026 1153727920 CMS
IRONWOOD PHARMACEUTICALS, INC $125.00 09/19/2024 Food and Beverage Undisputed 01/23/2026 1153745778 CMS
IRONWOOD PHARMACEUTICALS, INC $16.09 10/29/2024 Food and Beverage Undisputed 01/23/2026 1153727932 CMS
IRONWOOD PHARMACEUTICALS, INC $10.72 11/19/2024 Food and Beverage Undisputed 01/23/2026 1153727928 CMS
IRONWOOD PHARMACEUTICALS, INC $16.00 12/12/2024 Food and Beverage Undisputed 01/23/2026 1153745782 CMS
Janssen Biotech, Inc. $18.00 02/06/2024 Food and Beverage Undisputed 01/23/2026 1078348982 CMS
Janssen Biotech, Inc. $13.92 04/23/2024 Food and Beverage Undisputed 01/23/2026 1078348936 CMS
Janssen Biotech, Inc. $14.02 07/26/2024 Food and Beverage Undisputed 01/23/2026 1078348868 CMS
Janssen Biotech, Inc. $15.77 09/25/2024 Food and Beverage Undisputed 01/23/2026 1078348994 CMS
Janssen Biotech, Inc. $15.33 11/05/2024 Food and Beverage Undisputed 01/23/2026 1078349010 CMS
Janssen Biotech, Inc. $15.95 12/18/2024 Food and Beverage Undisputed 01/23/2026 1078348941 CMS
Madrigal Pharmaceuticals $39.90 11/04/2024 Food and Beverage Undisputed 01/23/2026 1144164433 CMS
Merck Sharp & Dohme LLC $13.43 02/26/2024 Food and Beverage Undisputed 01/23/2026 1141931285 CMS
Regeneron Healthcare Solutions, Inc. $13.94 05/16/2024 Food and Beverage Undisputed 01/23/2026 1114035767 CMS
Regeneron Healthcare Solutions, Inc. $15.50 08/07/2024 Food and Beverage Undisputed 01/23/2026 1114035769 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $13.90 01/17/2024 Food and Beverage Undisputed 01/23/2026 1153514116 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $16.23 01/17/2024 Food and Beverage Undisputed 01/23/2026 1153614940 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $15.00 05/15/2024 Food and Beverage Undisputed 01/23/2026 1153569398 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $16.90 05/30/2024 Food and Beverage Undisputed 01/23/2026 1153663776 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $13.03 06/06/2024 Food and Beverage Undisputed 01/23/2026 1153407507 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $14.35 06/12/2024 Food and Beverage Undisputed 01/23/2026 1153588856 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $13.31 06/19/2024 Food and Beverage Undisputed 01/23/2026 1153598325 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $14.93 06/26/2024 Food and Beverage Undisputed 01/23/2026 1153573450 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $16.22 06/26/2024 Food and Beverage Undisputed 01/23/2026 1153620687 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $4.23 07/17/2024 Food and Beverage Undisputed 01/23/2026 1153511339 CMS
Salix Pharmaceuticals, a division of Bausch Health US, LLC $14.04 07/31/2024 Food and Beverage Undisputed 01/23/2026 1153457787 CMS
Takeda Pharmaceuticals U.S.A., Inc. $16.99 03/11/2024 Food and Beverage Undisputed 01/23/2026 1137527888 CMS
Takeda Pharmaceuticals U.S.A., Inc. $19.40 06/20/2024 Food and Beverage Undisputed 01/23/2026 1137527892 CMS
Takeda Pharmaceuticals U.S.A., Inc. $20.87 08/13/2024 Food and Beverage Undisputed 01/23/2026 1137527896 CMS
Takeda Pharmaceuticals U.S.A., Inc. $17.97 10/17/2024 Food and Beverage Undisputed 01/23/2026 1137527900 CMS
Takeda Pharmaceuticals U.S.A., Inc. $16.98 11/14/2024 Food and Beverage Undisputed 01/23/2026 1137527904 CMS
UCB, Inc. $19.19 06/17/2024 Food and Beverage Undisputed 01/23/2026 1143121040 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.

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