Malpractice Information

SUBJECT TO TERMS AND CONDITIONS

Information current as of: 02/28/2026
Session: 2026-02-28 07:33:02.442 | 216.73.216.145 /3ouooipgsdkqvumxwlr0j3nl

Return to search page

Oregon Seal

Information About Web Based Malpractice Search Results:

Malpractice claim information is compiled by the Oregon Medical Board from reports received from insurers, public bodies, self-insured entities, or health maintenance organizations. Reporting requirements are governed by ORS 742.400. A malpractice claim is a written demand for payment regarding alleged professional negligence that has been filed in a court. The information below represents reports received to date; not all reports may have been submitted to the OMB.

Per ORS 742.400, only closed claims that resulted in a judicial finding or admission of liability or a money judgment, award or settlement that involves a payment to the claimant/plaintiff are posted online. Also, claims filed before 1/1/2006 and no new claim was filed within a four-year period are not posted.

The settlement of a medical malpractice claim may occur for a variety of reasons that do not necessarily reflect negatively on the professional competence or conduct of the provider. Therefore, there may be no OMB disciplinary action for a licensee, even though there is a closed malpractice claim. A payment in the settlement of a medical malpractice action does not create a presumption that medical malpractice occurred. Additional Malpractice Claim Information is available online. Disputes about malpractice claim reports and the content of this information should be directed to the licensee's malpractice insurance carrier.

The malpractice search results below show closed malpractice claims that were filed in court and resulted in a judicial finding or admission of liability, or a monetary judgment, award, or settlement that involves payment to the claimant/plaintiff by anyone named in the claim. Additional information is available in a printed Malpractice Search Report which can be requested by submitting the Licensee Information Request form.

Licensee: Tsen, Andrew Cho MD

MD20029

Malpractice Claims

09/20/2013
Portland, OR
(1) Settled by parties
05/27/2015
$3,650,000
Alleged heart damage after robotic mitral valve surgery.

09/08/2015
Portland, OR
(1) Settled by parties
11/26/2018
$400,000
Allegedly a tear of the left atrium during robotic mitral valve replacement surgery led to lung damage and death.

12/02/2019
Portland, OR
(1) Settled by parties
05/01/2022
$5,000,000
Alleged lack of proper technique during robotic mitral valve surgery resulting in myocardial infarction, a return to surgery and additional medical care.


There are one or more closed claims on file with the Board for this Licensee that are not available to view on our website. Per ORS 742.400(5)(a)(b), a claim will not appear on our website if:

  1. The claim did not result in a judicial finding or admission of liability or a money judgment, award or settlement that involves a payment to the claimant/plaintiff, and/or
  2. The claim was filed prior to 1/1/2006 and no new claim was filed within a four-year period.

For additional malpractice information regarding this licensee you may call the Board or obtain a printed Malpractice Search Report by submitting the following Licensee Information Request.

Oregon Medical Board
1500 SW 1st Ave, Suite 620
Portland, OR 97201
Phone: (971) 673-2700