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

ALEXANDER NISSEN

Allopathic & Osteopathic Physicians Thoracic Surgery (Cardiothoracic Vascular Surgery)

NPI
1730540386
CMS profile
4212454
Location
BETHESDA, MD

General Payments · PY2018–2024

$13,658.42

  • Reported across 36 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$12,701.60

21 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
Grant $10,000.00 1
Travel and Lodging $1,473.88 7
Food and Beverage $1,227.72 13

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Medtronic, Inc. $12,234.54 17
Artivion, Inc. $230.71 2
Edwards Lifesciences Corporation $120.57 1
Abbott Laboratories $115.78 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $135.35 2
PY2019 $281.89 4
PY2020 $170.76 3
PY2021 $164.28 2
PY2022 $20.98 1
PY2023 $183.56 3
PY2024 $12,701.60 21

Payment records · PY2024 (21)

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 $115.78 11/22/2024 Food and Beverage Undisputed 01/23/2026 1125225824 CMS
Artivion, Inc. $194.23 11/07/2024 Food and Beverage Undisputed 01/23/2026 1145791186 CMS
Artivion, Inc. $36.48 12/14/2024 Food and Beverage Undisputed 01/23/2026 1145791434 CMS
Edwards Lifesciences Corporation $120.57 04/29/2024 Food and Beverage Undisputed 01/23/2026 1138878811 CMS
Medtronic, Inc. $448.67 03/23/2024 Travel and Lodging Undisputed 01/23/2026 1119459553 CMS
Medtronic, Inc. $190.00 05/16/2024 Travel and Lodging Undisputed 01/23/2026 1119459555 CMS
Medtronic, Inc. $21.15 05/16/2024 Travel and Lodging Undisputed 01/23/2026 1119459557 CMS
Medtronic, Inc. $182.97 05/16/2024 Food and Beverage Undisputed 01/23/2026 1119459563 CMS
Medtronic, Inc. $190.00 05/17/2024 Travel and Lodging Undisputed 01/23/2026 1119459559 CMS
Medtronic, Inc. $21.15 05/17/2024 Travel and Lodging Undisputed 01/23/2026 1119459561 CMS
Medtronic, Inc. $82.65 05/17/2024 Food and Beverage Undisputed 01/23/2026 1119459565 CMS
Medtronic, Inc. $27.05 05/17/2024 Food and Beverage Undisputed 01/23/2026 1119459567 CMS
Medtronic, Inc. $72.98 05/17/2024 Food and Beverage Undisputed 01/23/2026 1119459569 CMS
Medtronic, Inc. $37.43 05/17/2024 Food and Beverage Undisputed 01/23/2026 1119459571 CMS
Medtronic, Inc. $189.97 05/17/2024 Food and Beverage Undisputed 01/23/2026 1119459573 CMS
Medtronic, Inc. $74.86 05/18/2024 Food and Beverage Undisputed 01/23/2026 1119459575 CMS
Medtronic, Inc. $56.99 05/18/2024 Food and Beverage Undisputed 01/23/2026 1119459577 CMS
Medtronic, Inc. $35.76 05/18/2024 Food and Beverage Undisputed 01/23/2026 1119459579 CMS
Medtronic, Inc. $10,000.00 10/25/2024 Grant Undisputed 01/23/2026 1112074861 CMS
Medtronic, Inc. $567.84 12/09/2024 Travel and Lodging Undisputed 01/23/2026 1119459583 CMS
Medtronic, Inc. $35.07 12/10/2024 Travel and Lodging Undisputed 01/23/2026 1119459581 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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Corrections to the substance of a record route to CMS through its review-and-dispute process; errors in how this site mirrors or displays a record route to us. Both paths are described in Methodology & Data.