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

DARREN D BRENNAN

Allopathic & Osteopathic Physicians Radiology Diagnostic Radiology

NPI
1710904172
CMS profile
122454
Location
MARLBOROUGH, MA

General Payments · PY2018–2021

$968,125.00

  • Reported across 352 records
  • CMS publication 2026-01-23

Latest program year · PY2021

$118,900.00

87 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: Diagnostic Radiology MA All categories

By nature of payment

PY2021 · sorted by reported total

Nature of paymentAmountRecords
Consulting Fee $118,900.00 87

By paying entity

PY2021 · sorted by reported total

Paying entityAmountRecords
Merck Sharp & Dohme Corporation $113,600.00 78
PFIZER INC. $5,300.00 9

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $494,160.00 111
PY2019 $200,765.00 75
PY2020 $154,300.00 79
PY2021 $118,900.00 87

Payment records · PY2021 (87)

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

Program year 2021 201820192020 Record-level detail is published for PY2021; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Merck Sharp & Dohme Corporation $4,620.00 01/04/2021 Consulting Fee Undisputed 01/23/2026 848383405 CMS
Merck Sharp & Dohme Corporation $4,200.00 02/04/2021 Consulting Fee Undisputed 01/23/2026 848468759 CMS
Merck Sharp & Dohme Corporation $370.00 02/18/2021 Consulting Fee Undisputed 01/23/2026 848384323 CMS
Merck Sharp & Dohme Corporation $2,290.00 02/18/2021 Consulting Fee Undisputed 01/23/2026 848475937 CMS
Merck Sharp & Dohme Corporation $1,325.00 02/18/2021 Consulting Fee Undisputed 01/23/2026 848682949 CMS
Merck Sharp & Dohme Corporation $3,500.00 02/18/2021 Consulting Fee Undisputed 01/23/2026 848730347 CMS
Merck Sharp & Dohme Corporation $225.00 02/22/2021 Consulting Fee Undisputed 01/23/2026 848642253 CMS
Merck Sharp & Dohme Corporation $360.00 03/10/2021 Consulting Fee Undisputed 01/23/2026 848446347 CMS
Merck Sharp & Dohme Corporation $150.00 03/10/2021 Consulting Fee Undisputed 01/23/2026 848724393 CMS
Merck Sharp & Dohme Corporation $3,035.00 03/15/2021 Consulting Fee Undisputed 01/23/2026 848445941 CMS
Merck Sharp & Dohme Corporation $180.00 03/18/2021 Consulting Fee Undisputed 01/23/2026 848470327 CMS
Merck Sharp & Dohme Corporation $340.00 03/18/2021 Consulting Fee Undisputed 01/23/2026 848576573 CMS
Merck Sharp & Dohme Corporation $280.00 03/18/2021 Consulting Fee Undisputed 01/23/2026 848623585 CMS
Merck Sharp & Dohme Corporation $685.00 03/18/2021 Consulting Fee Undisputed 01/23/2026 848647295 CMS
Merck Sharp & Dohme Corporation $3,240.00 04/08/2021 Consulting Fee Undisputed 01/23/2026 848383409 CMS
Merck Sharp & Dohme Corporation $60.00 04/08/2021 Consulting Fee Undisputed 01/23/2026 848664797 CMS
Merck Sharp & Dohme Corporation $660.00 04/15/2021 Consulting Fee Undisputed 01/23/2026 848538743 CMS
Merck Sharp & Dohme Corporation $200.00 04/15/2021 Consulting Fee Undisputed 01/23/2026 848730343 CMS
Merck Sharp & Dohme Corporation $50.00 04/19/2021 Consulting Fee Undisputed 01/23/2026 848384179 CMS
Merck Sharp & Dohme Corporation $6,150.00 04/19/2021 Consulting Fee Undisputed 01/23/2026 848384181 CMS
Merck Sharp & Dohme Corporation $240.00 05/07/2021 Consulting Fee Undisputed 01/23/2026 848383407 CMS
Merck Sharp & Dohme Corporation $4,200.00 05/07/2021 Consulting Fee Undisputed 01/23/2026 848623861 CMS
Merck Sharp & Dohme Corporation $585.00 05/13/2021 Consulting Fee Undisputed 01/23/2026 848595517 CMS
Merck Sharp & Dohme Corporation $200.00 05/17/2021 Consulting Fee Undisputed 01/23/2026 848384051 CMS
Merck Sharp & Dohme Corporation $1,785.00 05/20/2021 Consulting Fee Undisputed 01/23/2026 848535275 CMS
Merck Sharp & Dohme Corporation $2,340.00 06/08/2021 Consulting Fee Undisputed 01/23/2026 848595781 CMS
Merck Sharp & Dohme Corporation $4,320.00 06/08/2021 Consulting Fee Undisputed 01/23/2026 848647769 CMS
Merck Sharp & Dohme Corporation $1,650.00 06/14/2021 Consulting Fee Undisputed 01/23/2026 848605067 CMS
Merck Sharp & Dohme Corporation $260.00 06/14/2021 Consulting Fee Undisputed 01/23/2026 848642447 CMS
Merck Sharp & Dohme Corporation $200.00 06/17/2021 Consulting Fee Undisputed 01/23/2026 848383137 CMS
Merck Sharp & Dohme Corporation $75.00 06/17/2021 Consulting Fee Undisputed 01/23/2026 848383141 CMS
Merck Sharp & Dohme Corporation $2,580.00 06/17/2021 Consulting Fee Undisputed 01/23/2026 848623741 CMS
Merck Sharp & Dohme Corporation $2,120.00 06/17/2021 Consulting Fee Undisputed 01/23/2026 848683069 CMS
Merck Sharp & Dohme Corporation $3,420.00 07/06/2021 Consulting Fee Undisputed 01/23/2026 848382637 CMS
Merck Sharp & Dohme Corporation $1,260.00 07/06/2021 Consulting Fee Undisputed 01/23/2026 848576989 CMS
Merck Sharp & Dohme Corporation $170.00 07/15/2021 Consulting Fee Undisputed 01/23/2026 848647415 CMS
Merck Sharp & Dohme Corporation $50.00 07/15/2021 Consulting Fee Undisputed 01/23/2026 848666589 CMS
Merck Sharp & Dohme Corporation $90.00 07/15/2021 Consulting Fee Undisputed 01/23/2026 848687821 CMS
Merck Sharp & Dohme Corporation $8,100.00 07/16/2021 Consulting Fee Undisputed 01/23/2026 848383143 CMS
Merck Sharp & Dohme Corporation $1,295.00 07/16/2021 Consulting Fee Undisputed 01/23/2026 848647777 CMS
Merck Sharp & Dohme Corporation $360.00 07/19/2021 Consulting Fee Undisputed 01/23/2026 848383139 CMS
Merck Sharp & Dohme Corporation $2,280.00 08/02/2021 Consulting Fee Undisputed 01/23/2026 848498045 CMS
Merck Sharp & Dohme Corporation $3,600.00 08/02/2021 Consulting Fee Undisputed 01/23/2026 848701759 CMS
Merck Sharp & Dohme Corporation $615.00 08/13/2021 Consulting Fee Undisputed 01/23/2026 848494035 CMS
Merck Sharp & Dohme Corporation $2,920.00 08/13/2021 Consulting Fee Undisputed 01/23/2026 848553879 CMS
Merck Sharp & Dohme Corporation $450.00 08/20/2021 Consulting Fee Undisputed 01/23/2026 848517459 CMS
Merck Sharp & Dohme Corporation $1,920.00 09/03/2021 Consulting Fee Undisputed 01/23/2026 848605429 CMS
Merck Sharp & Dohme Corporation $2,340.00 09/03/2021 Consulting Fee Undisputed 01/23/2026 848730887 CMS
Merck Sharp & Dohme Corporation $115.00 09/17/2021 Consulting Fee Undisputed 01/23/2026 848383285 CMS
Merck Sharp & Dohme Corporation $225.00 09/20/2021 Consulting Fee Undisputed 01/23/2026 848642665 CMS
Merck Sharp & Dohme Corporation $1,860.00 10/06/2021 Consulting Fee Undisputed 01/23/2026 848468997 CMS
Merck Sharp & Dohme Corporation $1,440.00 10/06/2021 Consulting Fee Undisputed 01/23/2026 848643097 CMS
Merck Sharp & Dohme Corporation $545.00 10/25/2021 Consulting Fee Undisputed 01/23/2026 848383283 CMS
Merck Sharp & Dohme Corporation $75.00 11/03/2021 Consulting Fee Undisputed 01/23/2026 848446493 CMS
Merck Sharp & Dohme Corporation $2,640.00 11/05/2021 Consulting Fee Undisputed 01/23/2026 848382515 CMS
Merck Sharp & Dohme Corporation $3,195.00 11/05/2021 Consulting Fee Undisputed 01/23/2026 848382517 CMS
Merck Sharp & Dohme Corporation $300.00 11/12/2021 Consulting Fee Undisputed 01/23/2026 848382635 CMS
Merck Sharp & Dohme Corporation $7,320.00 12/07/2021 Consulting Fee Undisputed 01/23/2026 848382521 CMS
Merck Sharp & Dohme Corporation $1,620.00 12/07/2021 Consulting Fee Undisputed 01/23/2026 848647913 CMS
Merck Sharp & Dohme Corporation $120.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848468999 CMS
Merck Sharp & Dohme Corporation $860.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848517725 CMS
Merck Sharp & Dohme Corporation $115.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848535675 CMS
Merck Sharp & Dohme Corporation $150.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848554277 CMS
Merck Sharp & Dohme Corporation $1,315.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848575183 CMS
Merck Sharp & Dohme Corporation $95.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848595929 CMS
Merck Sharp & Dohme Corporation $340.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848623961 CMS
Merck Sharp & Dohme Corporation $95.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848623963 CMS
Merck Sharp & Dohme Corporation $300.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848665027 CMS
Merck Sharp & Dohme Corporation $4,440.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848730883 CMS
Merck Sharp & Dohme LLC $150.00 03/10/2021 Consulting Fee Undisputed 01/23/2026 848582103 CMS
Merck Sharp & Dohme LLC $120.00 06/08/2021 Consulting Fee Undisputed 01/23/2026 848687945 CMS
Merck Sharp & Dohme LLC $60.00 07/06/2021 Consulting Fee Undisputed 01/23/2026 848642899 CMS
Merck Sharp & Dohme LLC $1,600.00 08/13/2021 Consulting Fee Undisputed 01/23/2026 848476779 CMS
Merck Sharp & Dohme LLC $420.00 09/03/2021 Consulting Fee Undisputed 01/23/2026 848498047 CMS
Merck Sharp & Dohme LLC $420.00 10/06/2021 Consulting Fee Undisputed 01/23/2026 848382519 CMS
Merck Sharp & Dohme LLC $60.00 11/05/2021 Consulting Fee Undisputed 01/23/2026 848539403 CMS
Merck Sharp & Dohme LLC $660.00 12/07/2021 Consulting Fee Undisputed 01/23/2026 848605575 CMS
Merck Sharp & Dohme LLC $1,600.00 12/21/2021 Consulting Fee Undisputed 01/23/2026 848498187 CMS
PFIZER INC. $590.00 02/22/2021 Consulting Fee Undisputed 01/23/2026 833094119 CMS
PFIZER INC. $140.00 03/15/2021 Consulting Fee Undisputed 01/23/2026 833094123 CMS
PFIZER INC. $630.00 04/19/2021 Consulting Fee Undisputed 01/23/2026 833197121 CMS
PFIZER INC. $1,750.00 05/17/2021 Consulting Fee Undisputed 01/23/2026 833197133 CMS
PFIZER INC. $310.00 06/14/2021 Consulting Fee Undisputed 01/23/2026 833197137 CMS
PFIZER INC. $770.00 07/16/2021 Consulting Fee Undisputed 01/23/2026 833197449 CMS
PFIZER INC. $560.00 08/13/2021 Consulting Fee Undisputed 01/23/2026 833197453 CMS
PFIZER INC. $270.00 09/16/2021 Consulting Fee Undisputed 01/23/2026 833197129 CMS
PFIZER INC. $280.00 12/09/2021 Consulting Fee Undisputed 01/23/2026 833197125 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
Source files
Dataset page · Bulk file · PY2018 , PY2019 , PY2020 , PY2021
Generated from
OP_DTL_GNRL_PGYR2021_P01232026_01102026.csv

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