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

MATTHEW Y SIOW

Allopathic & Osteopathic Physicians Orthopaedic Surgery

NPI
1467948307
CMS profile
7228700
Location
LOS ANGELES, CA

General Payments · PY2019–2024

$27,757.01

  • Reported across 51 records
  • CMS publication 2026-01-23

Latest program year · PY2024

$26,517.29

44 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 $22,916.67 2
Food and Beverage $1,935.87 36
Travel and Lodging $1,664.75 6

By paying entity

PY2024 · sorted by reported total

Paying entityAmountRecords
Arthrex, Inc. $21,836.75 13
Smith & Nephew, Inc. $3,477.41 10
DePuy Synthes Sales Inc. $538.57 11
Saxum Surgical, Inc. $230.03 4
Stryker Corporation $160.36 2
Vericel Corporation $149.99 1
SI-BONE, INC. $50.00 1
SpringWorks Therapeutics, Inc. $48.39 1
Elevate Surgical CO $25.79 1

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2019 $867.00 1
PY2022 $77.93 3
PY2023 $294.79 3
PY2024 $26,517.29 44

Payment records · PY2024 (44)

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

Program year 2024 201920222023 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
Arthrex, Inc. $20,000.00 07/06/2024 Grant Undisputed 01/23/2026 1146568818 CMS
Arthrex, Inc. $596.83 09/05/2024 Travel and Lodging Undisputed 01/23/2026 1146568842 CMS
Arthrex, Inc. $238.65 09/10/2024 Travel and Lodging Undisputed 01/23/2026 1146568838 CMS
Arthrex, Inc. $238.65 09/11/2024 Travel and Lodging Undisputed 01/23/2026 1146568840 CMS
Arthrex, Inc. $24.00 09/12/2024 Food and Beverage Undisputed 01/23/2026 1146568830 CMS
Arthrex, Inc. $238.65 09/12/2024 Travel and Lodging Undisputed 01/23/2026 1146568836 CMS
Arthrex, Inc. $44.00 09/13/2024 Food and Beverage Undisputed 01/23/2026 1146568822 CMS
Arthrex, Inc. $30.00 09/13/2024 Food and Beverage Undisputed 01/23/2026 1146568826 CMS
Arthrex, Inc. $113.32 09/13/2024 Travel and Lodging Undisputed 01/23/2026 1146568828 CMS
Arthrex, Inc. $40.00 09/13/2024 Food and Beverage Undisputed 01/23/2026 1146568832 CMS
Arthrex, Inc. $238.65 09/13/2024 Travel and Lodging Undisputed 01/23/2026 1146568834 CMS
Arthrex, Inc. $10.00 09/14/2024 Food and Beverage Undisputed 01/23/2026 1146568820 CMS
Arthrex, Inc. $24.00 09/14/2024 Food and Beverage Undisputed 01/23/2026 1146568824 CMS
DePuy Synthes Sales Inc. $10.55 01/10/2024 Food and Beverage Undisputed 01/23/2026 1077807576 CMS
DePuy Synthes Sales Inc. $129.24 02/15/2024 Food and Beverage Undisputed 01/23/2026 1077807551 CMS
DePuy Synthes Sales Inc. $74.60 02/15/2024 Food and Beverage Undisputed 01/23/2026 1077807975 CMS
DePuy Synthes Sales Inc. $5.40 02/16/2024 Food and Beverage Undisputed 01/23/2026 1077807978 CMS
DePuy Synthes Sales Inc. $131.16 02/16/2024 Food and Beverage Undisputed 01/23/2026 1077807997 CMS
DePuy Synthes Sales Inc. $13.72 03/25/2024 Food and Beverage Undisputed 01/23/2026 1077807788 CMS
DePuy Synthes Sales Inc. $54.14 03/26/2024 Food and Beverage Undisputed 01/23/2026 1077807891 CMS
DePuy Synthes Sales Inc. $33.10 03/27/2024 Food and Beverage Undisputed 01/23/2026 1077807749 CMS
DePuy Synthes Sales Inc. $44.63 04/06/2024 Food and Beverage Undisputed 01/23/2026 1077807960 CMS
DePuy Synthes Sales Inc. $19.52 05/09/2024 Food and Beverage Undisputed 01/23/2026 1077807690 CMS
DePuy Synthes Sales Inc. $22.51 05/30/2024 Food and Beverage Undisputed 01/23/2026 1077807799 CMS
Elevate Surgical CO $25.79 06/04/2024 Food and Beverage Undisputed 01/23/2026 1120628904 CMS
Saxum Surgical, Inc. $54.62 07/31/2024 Food and Beverage Undisputed 01/23/2026 1121025874 CMS
Saxum Surgical, Inc. $48.50 07/31/2024 Food and Beverage Undisputed 01/23/2026 1121025876 CMS
Saxum Surgical, Inc. $106.96 08/09/2024 Food and Beverage Undisputed 01/23/2026 1121025870 CMS
Saxum Surgical, Inc. $19.95 08/16/2024 Food and Beverage Undisputed 01/23/2026 1121025872 CMS
SI-BONE, INC. $50.00 06/14/2024 Food and Beverage Undisputed 01/23/2026 1120065379 CMS
Smith+Nephew, Inc. $2,916.67 06/07/2024 Grant Undisputed 01/23/2026 1149615012 CMS
Smith+Nephew, Inc. $31.83 08/10/2024 Food and Beverage Undisputed 01/23/2026 1149615000 CMS
Smith+Nephew, Inc. $132.97 08/17/2024 Food and Beverage Undisputed 01/23/2026 1149615010 CMS
Smith+Nephew, Inc. $14.24 08/31/2024 Food and Beverage Undisputed 01/23/2026 1149614994 CMS
Smith+Nephew, Inc. $24.86 09/13/2024 Food and Beverage Undisputed 01/23/2026 1149614998 CMS
Smith+Nephew, Inc. $18.84 09/27/2024 Food and Beverage Undisputed 01/23/2026 1149614996 CMS
Smith+Nephew, Inc. $33.90 10/12/2024 Food and Beverage Undisputed 01/23/2026 1149615002 CMS
Smith+Nephew, Inc. $125.00 10/13/2024 Food and Beverage Undisputed 01/23/2026 1149615008 CMS
Smith+Nephew, Inc. $64.85 11/21/2024 Food and Beverage Undisputed 01/23/2026 1149615004 CMS
Smith+Nephew, Inc. $114.25 12/20/2024 Food and Beverage Undisputed 01/23/2026 1149615006 CMS
SpringWorks Therapeutics, Inc. $48.39 04/29/2024 Food and Beverage Undisputed 01/23/2026 1085808231 CMS
Stryker Corporation $57.39 05/24/2024 Food and Beverage Undisputed 01/23/2026 1119982523 CMS
Stryker Corporation $102.97 07/17/2024 Food and Beverage Undisputed 01/23/2026 1119982525 CMS
Vericel Corporation $149.99 09/23/2024 Food and Beverage Undisputed 01/23/2026 1128575282 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
2019, 2022, 2023, 2024
Source files
Dataset page · Bulk file · PY2019 , PY2022 , PY2023 , PY2024
Generated from
OP_DTL_GNRL_PGYR2024_P01232026_01102026.csv

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