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

DONALD S MARKS

Allopathic & Osteopathic Physicians Psychiatry & Neurology Neurology

NPI
1982680740
CMS profile
90085
Location
PLYMOUTH, MA

General Payments · PY2018–2024

$47,396.99

  • Reported across 101 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$25,555.06

35 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

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
EISAI INC. $22,516.45 21
E.R. Squibb & Sons, L.L.C. $1,680.44 3
Alnylam Pharmaceuticals Inc. $1,259.10 9
Biogen, Inc. $99.07 2

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $123.33 4
PY2019 $1,553.33 25
PY2020 $90.33 5
PY2021 $6,467.50 4
PY2022 $1,244.01 9
PY2023 $12,363.43 19
PY2024 $25,555.06 35

Payment records · PY2024 (35)

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
Alnylam Pharmaceuticals Inc. $575.97 04/26/2024 Travel and Lodging Undisputed 01/23/2026 1125835149 CMS
Alnylam Pharmaceuticals Inc. $219.00 05/09/2024 Travel and Lodging Undisputed 01/23/2026 1125835143 CMS
Alnylam Pharmaceuticals Inc. $100.62 05/09/2024 Travel and Lodging Undisputed 01/23/2026 1125835153 CMS
Alnylam Pharmaceuticals Inc. $24.24 05/09/2024 Food and Beverage Undisputed 01/23/2026 1125835159 CMS
Alnylam Pharmaceuticals Inc. $35.00 05/09/2024 Food and Beverage Undisputed 01/23/2026 1125835165 CMS
Alnylam Pharmaceuticals Inc. $130.91 05/09/2024 Food and Beverage Undisputed 01/23/2026 1125835175 CMS
Alnylam Pharmaceuticals Inc. $48.50 05/09/2024 Food and Beverage Undisputed 01/23/2026 1125835181 CMS
Alnylam Pharmaceuticals Inc. $100.62 05/09/2024 Travel and Lodging Undisputed 01/23/2026 1125835199 CMS
Alnylam Pharmaceuticals Inc. $24.24 05/09/2024 Food and Beverage Undisputed 01/23/2026 1125835201 CMS
Biogen, Inc. $33.08 07/29/2024 Food and Beverage Undisputed 01/23/2026 1104813267 CMS
Biogen, Inc. $65.99 10/31/2024 Food and Beverage Undisputed 01/23/2026 1104813269 CMS
E.R. Squibb & Sons, L.L.C. $308.03 03/29/2024 Food and Beverage Undisputed 01/23/2026 1101314257 CMS
E.R. Squibb & Sons, L.L.C. $1,044.04 03/29/2024 Travel and Lodging Undisputed 01/23/2026 1101314259 CMS
E.R. Squibb & Sons, L.L.C. $328.37 03/29/2024 Travel and Lodging Undisputed 01/23/2026 1101314265 CMS
Eisai Inc. $735.00 01/24/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742317 CMS
Eisai Inc. $121.84 02/07/2024 Food and Beverage Undisputed 01/23/2026 1110742291 CMS
Eisai Inc. $1,225.00 02/07/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742297 CMS
Eisai Inc. $2,940.00 02/07/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742305 CMS
Eisai Inc. $490.00 02/16/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742315 CMS
Eisai Inc. $490.00 02/21/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742279 CMS
Eisai Inc. $7.00 02/21/2024 Travel and Lodging Undisputed 01/23/2026 1110742281 CMS
Eisai Inc. $1,225.00 02/21/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742283 CMS
Eisai Inc. $3,920.00 02/21/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742289 CMS
Eisai Inc. $124.74 02/21/2024 Food and Beverage Undisputed 01/23/2026 1110742295 CMS
Eisai Inc. $29.70 02/21/2024 Food and Beverage Undisputed 01/23/2026 1110742299 CMS
Eisai Inc. $1,225.00 02/21/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742303 CMS
Eisai Inc. $331.00 02/21/2024 Travel and Lodging Undisputed 01/23/2026 1110742307 CMS
Eisai Inc. $12.36 02/21/2024 Food and Beverage Undisputed 01/23/2026 1110742309 CMS
Eisai Inc. $1,470.00 03/26/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742285 CMS
Eisai Inc. $1,225.00 03/26/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742287 CMS
Eisai Inc. $84.81 03/26/2024 Food and Beverage Undisputed 01/23/2026 1110742293 CMS
Eisai Inc. $1,470.00 04/15/2024 Consulting Fee Undisputed 01/23/2026 1110742319 CMS
Eisai Inc. $980.00 05/21/2024 Compensation for serving as faculty or as a speaker for a medical education program Undisputed 01/23/2026 1110742301 CMS
Eisai Inc. $1,470.00 06/13/2024 Consulting Fee Undisputed 01/23/2026 1110742311 CMS
Eisai Inc. $2,940.00 09/26/2024 Consulting Fee Undisputed 01/23/2026 1110742313 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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