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

MARTIN NIKOLAUS STIENEN

Allopathic & Osteopathic Physicians Neurological Surgery

NPI
1912482365
CMS profile
5693068
Location
STANFORD, CA

General Payments · PY2018–2019

$6,657.02

  • Reported across 53 records
  • CMS publication 2026-01-23

Latest program year · PY2019

$2,465.69

26 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

PY2019 · sorted by reported total

Nature of paymentAmountRecords
Travel and Lodging $1,669.48 5
Food and Beverage $796.21 21

By paying entity

PY2019 · sorted by reported total

Paying entityAmountRecords
Stryker Corporation $1,523.78 8
Medical Device Business Services, Inc. $650.10 7
NuVasive, Inc. $221.65 8
Medtronic USA, Inc. $70.16 3

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $4,191.33 27
PY2019 $2,465.69 26

Payment records · PY2019 (26)

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

Program year 2019 2018 Record-level detail is published for PY2019; earlier years are summarised in “By program year”.
Paying entity Amount Date Nature of payment Dispute status Published Record ID Source
Medical Device Business Services, Inc. $122.04 04/04/2019 Food and Beverage Undisputed 01/23/2026 655889791 CMS
Medical Device Business Services, Inc. $255.02 05/03/2019 Travel and Lodging Undisputed 01/23/2026 655889779 CMS
Medical Device Business Services, Inc. $119.47 05/03/2019 Food and Beverage Undisputed 01/23/2026 655889781 CMS
Medical Device Business Services, Inc. $70.68 05/03/2019 Travel and Lodging Undisputed 01/23/2026 655889789 CMS
Medical Device Business Services, Inc. $29.95 05/04/2019 Food and Beverage Undisputed 01/23/2026 655889783 CMS
Medical Device Business Services, Inc. $43.95 05/04/2019 Food and Beverage Undisputed 01/23/2026 655889785 CMS
Medical Device Business Services, Inc. $8.99 05/04/2019 Food and Beverage Undisputed 01/23/2026 655889787 CMS
Medtronic USA, Inc. $26.47 02/23/2019 Food and Beverage Undisputed 01/23/2026 667763845 CMS
Medtronic USA, Inc. $18.56 02/23/2019 Food and Beverage Undisputed 01/23/2026 667763953 CMS
Medtronic USA, Inc. $25.13 05/18/2019 Food and Beverage Undisputed 01/23/2026 667777509 CMS
NuVasive, Inc. $40.53 03/08/2019 Food and Beverage Undisputed 01/23/2026 705151563 CMS
NuVasive, Inc. $54.17 03/29/2019 Food and Beverage Undisputed 01/23/2026 705151565 CMS
NuVasive, Inc. $8.40 04/07/2019 Food and Beverage Undisputed 01/23/2026 705151561 CMS
NuVasive, Inc. $2.89 07/12/2019 Food and Beverage Undisputed 01/23/2026 705151645 CMS
NuVasive, Inc. $86.29 07/22/2019 Food and Beverage Undisputed 01/23/2026 705151647 CMS
NuVasive, Inc. $10.64 11/14/2019 Food and Beverage Undisputed 01/23/2026 705151681 CMS
NuVasive, Inc. $1.80 11/14/2019 Food and Beverage Undisputed 01/23/2026 705151683 CMS
NuVasive, Inc. $16.93 12/30/2019 Food and Beverage Undisputed 01/23/2026 705151685 CMS
Stryker Corporation $668.20 02/07/2019 Travel and Lodging Undisputed 01/23/2026 692658741 CMS
Stryker Corporation $20.00 02/07/2019 Food and Beverage Undisputed 01/23/2026 692658743 CMS
Stryker Corporation $50.00 02/07/2019 Food and Beverage Undisputed 01/23/2026 692658745 CMS
Stryker Corporation $20.00 02/08/2019 Food and Beverage Undisputed 01/23/2026 692658747 CMS
Stryker Corporation $40.00 02/08/2019 Food and Beverage Undisputed 01/23/2026 692658811 CMS
Stryker Corporation $50.00 02/08/2019 Food and Beverage Undisputed 01/23/2026 692658813 CMS
Stryker Corporation $7.38 02/08/2019 Travel and Lodging Undisputed 01/23/2026 692658815 CMS
Stryker Corporation $668.20 02/08/2019 Travel and Lodging Undisputed 01/23/2026 692658817 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
Source files
Dataset page · Bulk file · PY2018 , PY2019
Generated from
OP_DTL_GNRL_PGYR2019_P01232026_01102026.csv

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