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

ELENI NACKOS

Allopathic & Osteopathic Physicians Internal Medicine Hematology & Oncology

NPI
1023339819
CMS profile
591652
Location
WESTBROOK, ME

General Payments · PY2018–2024

$100,977.31

  • Reported across 131 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$3,485.27

6 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
Honoraria $3,375.00 2
Food and Beverage $110.27 4

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
PFIZER INC. $3,375.00 2
ABBVIE INC. $58.79 2
Daiichi Sankyo Inc. $51.48 2

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $23,426.99 37
PY2019 $40,172.71 42
PY2020 $24,859.62 27
PY2021 $3,691.24 7
PY2022 $3,285.74 7
PY2023 $2,055.74 5
PY2024 $3,485.27 6

Payment records · PY2024 (6)

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
ABBVIE INC. $29.63 05/03/2024 Food and Beverage Undisputed 01/23/2026 1105091519 CMS
ABBVIE INC. $29.16 08/06/2024 Food and Beverage Undisputed 01/23/2026 1105091521 CMS
Daiichi Sankyo Inc. $23.23 07/16/2024 Food and Beverage Undisputed 01/23/2026 1089461067 CMS
Daiichi Sankyo Inc. $28.25 08/21/2024 Food and Beverage Undisputed 01/23/2026 1089461069 CMS
PFIZER INC. $1,625.00 01/18/2024 Honoraria Undisputed 01/23/2026 1131477960 CMS
PFIZER INC. $1,750.00 01/18/2024 Honoraria Undisputed 01/23/2026 1131477964 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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