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

CHI WAN KOO

Allopathic & Osteopathic Physicians Radiology Diagnostic Radiology

NPI
1285898361
CMS profile
742628
Location
ROCHESTER, MN

General Payments · PY2018–2019

$15,252.52

  • Reported across 39 records
  • CMS publication 2026-01-23

Latest program year · PY2019

$9,548.00

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

PY2019 · sorted by reported total

Nature of paymentAmountRecords
Travel and Lodging $9,156.96 12
Food and Beverage $391.04 9

By paying entity

PY2019 · sorted by reported total

Paying entityAmountRecords
Siemens Medical Solutions USA, Inc. $9,548.00 21

By program year

All program years on this page · sorted by year

Program yearAmountRecords
PY2018 $5,704.52 18
PY2019 $9,548.00 21

Payment records · PY2019 (21)

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
Siemens Medical Solutions USA, Inc. $8,423.73 08/30/2019 Travel and Lodging Undisputed 01/23/2026 631942695 CMS
Siemens Medical Solutions USA, Inc. $9.00 08/30/2019 Travel and Lodging Undisputed 01/23/2026 631942701 CMS
Siemens Medical Solutions USA, Inc. $23.45 10/06/2019 Travel and Lodging Undisputed 01/23/2026 631942713 CMS
Siemens Medical Solutions USA, Inc. $16.90 10/06/2019 Food and Beverage Undisputed 01/23/2026 631942723 CMS
Siemens Medical Solutions USA, Inc. $174.64 10/06/2019 Travel and Lodging Undisputed 01/23/2026 631942737 CMS
Siemens Medical Solutions USA, Inc. $8.48 10/06/2019 Food and Beverage Undisputed 01/23/2026 631942775 CMS
Siemens Medical Solutions USA, Inc. $21.13 10/07/2019 Food and Beverage Undisputed 01/23/2026 631942707 CMS
Siemens Medical Solutions USA, Inc. $4.27 10/07/2019 Travel and Lodging Undisputed 01/23/2026 631942721 CMS
Siemens Medical Solutions USA, Inc. $16.90 10/07/2019 Food and Beverage Undisputed 01/23/2026 631942727 CMS
Siemens Medical Solutions USA, Inc. $174.63 10/07/2019 Travel and Lodging Undisputed 01/23/2026 631942739 CMS
Siemens Medical Solutions USA, Inc. $133.99 10/07/2019 Food and Beverage Undisputed 01/23/2026 631942747 CMS
Siemens Medical Solutions USA, Inc. $72.13 10/07/2019 Travel and Lodging Undisputed 01/23/2026 631942755 CMS
Siemens Medical Solutions USA, Inc. $33.81 10/07/2019 Food and Beverage Undisputed 01/23/2026 631942757 CMS
Siemens Medical Solutions USA, Inc. $7.07 10/07/2019 Travel and Lodging Undisputed 01/23/2026 631942765 CMS
Siemens Medical Solutions USA, Inc. $27.01 10/08/2019 Travel and Lodging Undisputed 01/23/2026 631942715 CMS
Siemens Medical Solutions USA, Inc. $16.90 10/08/2019 Food and Beverage Undisputed 01/23/2026 631942731 CMS
Siemens Medical Solutions USA, Inc. $81.10 10/08/2019 Food and Beverage Undisputed 01/23/2026 631942752 CMS
Siemens Medical Solutions USA, Inc. $61.83 10/08/2019 Food and Beverage Undisputed 01/23/2026 631942767 CMS
Siemens Medical Solutions USA, Inc. $174.63 10/08/2019 Travel and Lodging Undisputed 01/23/2026 631942771 CMS
Siemens Medical Solutions USA, Inc. $25.73 10/09/2019 Travel and Lodging Undisputed 01/23/2026 631942761 CMS
Siemens Medical Solutions USA, Inc. $40.67 10/10/2019 Travel and Lodging Undisputed 01/23/2026 631942745 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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