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

ALEXANDRA NICOLE KAMMEN

Allopathic & Osteopathic Physicians Neurological Surgery

NPI
1194256255
CMS profile
8575317
Location
BOSTON, MA

General Payments · PY2021–2024

$35,826.95

  • Reported across 69 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$34,158.09

50 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 $30,000.00 2
Travel and Lodging $2,342.79 14
Food and Beverage $1,815.30 34

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Medtronic, Inc. $22,037.34 32
BOSTON SCIENTIFIC CORPORATION $10,000.00 1
INSIGHTEC,INC $1,619.29 11
NEUROPACE, INC. $360.64 2
KLS-Martin L.P. $85.30 2
Integra LifeSciences Corporation $37.52 1
ZIMVIE INC. $18.00 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2021 $165.29 2
PY2022 $582.77 7
PY2023 $920.80 10
PY2024 $34,158.09 50

Payment records · PY2024 (50)

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

Program year 2024 202120222023 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
Boston Scientific Corporation $10,000.00 11/07/2024 Grant Undisputed 01/23/2026 1092240606 CMS
InSightec,Inc $371.95 09/06/2024 Travel and Lodging Undisputed 01/23/2026 1110444471 CMS
InSightec,Inc $608.14 09/06/2024 Travel and Lodging Undisputed 01/23/2026 1110444473 CMS
InSightec,Inc $10.06 09/06/2024 Food and Beverage Undisputed 01/23/2026 1110444475 CMS
InSightec,Inc $98.31 09/06/2024 Food and Beverage Undisputed 01/23/2026 1110444477 CMS
InSightec,Inc $72.16 09/07/2024 Food and Beverage Undisputed 01/23/2026 1110444479 CMS
InSightec,Inc $85.63 09/07/2024 Food and Beverage Undisputed 01/23/2026 1110444481 CMS
InSightec,Inc $194.11 09/07/2024 Food and Beverage Undisputed 01/23/2026 1110444483 CMS
InSightec,Inc $49.20 09/08/2024 Food and Beverage Undisputed 01/23/2026 1110444485 CMS
InSightec,Inc $35.18 09/08/2024 Food and Beverage Undisputed 01/23/2026 1110444487 CMS
InSightec,Inc $77.76 09/09/2024 Food and Beverage Undisputed 01/23/2026 1110444489 CMS
InSightec,Inc $16.79 09/09/2024 Food and Beverage Undisputed 01/23/2026 1110444491 CMS
Integra LifeSciences Corporation $37.52 03/05/2024 Food and Beverage Undisputed 01/23/2026 1140072704 CMS
KLS-Martin L.P. $42.65 04/02/2024 Food and Beverage Undisputed 01/23/2026 1144440061 CMS
KLS-Martin L.P. $42.65 04/02/2024 Food and Beverage Undisputed 01/23/2026 1144944935 CMS
Medtronic, Inc. $356.54 08/22/2024 Travel and Lodging Undisputed 01/23/2026 1117103949 CMS
Medtronic, Inc. $4.57 08/22/2024 Travel and Lodging Undisputed 01/23/2026 1117103951 CMS
Medtronic, Inc. $20,000.00 10/15/2024 Grant Undisputed 01/23/2026 1112072653 CMS
Medtronic, Inc. $40.69 10/16/2024 Travel and Lodging Undisputed 01/23/2026 1117103967 CMS
Medtronic, Inc. $47.81 10/16/2024 Travel and Lodging Undisputed 01/23/2026 1117103981 CMS
Medtronic, Inc. $1.29 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103953 CMS
Medtronic, Inc. $36.74 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103955 CMS
Medtronic, Inc. $11.56 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103957 CMS
Medtronic, Inc. $7.30 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103959 CMS
Medtronic, Inc. $33.50 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103961 CMS
Medtronic, Inc. $125.25 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103963 CMS
Medtronic, Inc. $3.75 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103971 CMS
Medtronic, Inc. $130.23 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103973 CMS
Medtronic, Inc. $28.11 10/17/2024 Food and Beverage Undisputed 01/23/2026 1117103975 CMS
Medtronic, Inc. $627.00 10/17/2024 Travel and Lodging Undisputed 01/23/2026 1117103977 CMS
Medtronic, Inc. $94.20 10/17/2024 Travel and Lodging Undisputed 01/23/2026 1117103979 CMS
Medtronic, Inc. $49.46 10/17/2024 Travel and Lodging Undisputed 01/23/2026 1117103983 CMS
Medtronic, Inc. $20.87 10/17/2024 Travel and Lodging Undisputed 01/23/2026 1117103985 CMS
Medtronic, Inc. $1.84 10/18/2024 Food and Beverage Undisputed 01/23/2026 1112068406 CMS
Medtronic, Inc. $3.69 10/18/2024 Food and Beverage Undisputed 01/23/2026 1112068532 CMS
Medtronic, Inc. $7.05 10/18/2024 Food and Beverage Undisputed 01/23/2026 1112068658 CMS
Medtronic, Inc. $29.01 10/18/2024 Food and Beverage Undisputed 01/23/2026 1112068782 CMS
Medtronic, Inc. $38.03 10/18/2024 Food and Beverage Undisputed 01/23/2026 1112068908 CMS
Medtronic, Inc. $134.84 10/18/2024 Food and Beverage Undisputed 01/23/2026 1117103965 CMS
Medtronic, Inc. $14.90 10/18/2024 Travel and Lodging Undisputed 01/23/2026 1117103987 CMS
Medtronic, Inc. $14.90 10/18/2024 Travel and Lodging Undisputed 01/23/2026 1117103989 CMS
Medtronic, Inc. $21.48 10/18/2024 Travel and Lodging Undisputed 01/23/2026 1117103991 CMS
Medtronic, Inc. $25.94 10/19/2024 Food and Beverage Undisputed 01/23/2026 1112069266 CMS
Medtronic, Inc. $48.69 10/19/2024 Food and Beverage Undisputed 01/23/2026 1112069740 CMS
Medtronic, Inc. $3.91 10/19/2024 Food and Beverage Undisputed 01/23/2026 1112069858 CMS
Medtronic, Inc. $3.91 10/19/2024 Food and Beverage Undisputed 01/23/2026 1112069974 CMS
Medtronic, Inc. $70.28 10/19/2024 Travel and Lodging Undisputed 01/23/2026 1117103969 CMS
NEUROPACE, INC. $182.88 12/07/2024 Food and Beverage Undisputed 01/23/2026 1153273660 CMS
NEUROPACE, INC. $177.76 12/08/2024 Food and Beverage Undisputed 01/23/2026 1153273674 CMS
ZIMVIE INC. $18.00 03/19/2024 Food and Beverage Undisputed 01/23/2026 1142549153 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
2021, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2021 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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