William P. Greubel, III


William is a trial lawyer who has taken more than 50 cases to verdict before juries in Cook, Will, DuPage and McHenry Counties. William focuses on the defense of professional negligence claims; representing physicians, medical groups, hospitals and other allied healthcare providers in a wide range of complex personal injury and wrongful death matters. 

In addition to his focus on healthcare-related matters, William has also represented large-scale transportation interests in personal injury and wrongful death matters, as well as global insurers in complex environmental contamination and other mass tort coverage disputes. 

William has also been named an Emerging Lawyer by the Chicago Daily Law Bulletin and a Rising Star by Super Lawyers, both of which honor the top 2% of all lawyers under the age of forty.


Medical Negligence and Healthcare
Pharmaceutical and Medical Device
General Trial Practice


  • Selected for inclusion in Emerging Lawyers by the Chicago Daily Law Bulletin, 2015-2018, 2020
  • Selected for inclusion in Illinois Super Lawyers - Rising Stars Edition in 2018, 2019


  • William Greubel, Note: A Comedy of Errors: Defining “Component” in a Global Information Technology Market – Accounting for Innovation by Penalizing the Innovators, 24 J. Marshall J. Computer & Info. L. 507 (Spring 2006)
  • William Greubel, et al., The Twenty-Fifth Annual John Marshall International Moot Court Competition in Information Technology and Privacy Law October 26-28, 2006: Bench Memorandum, 24 J. Marshall J. Computer & Info. L. 673 (Summer 2006)


Chicago, Lisle, Libertyville, Madison County, February 3, 2020
Swanson, Martin & Bell, LLP Attorneys Named Leading Lawyers, Emerging Lawyers for 2020
Those designated Leading Lawyers were recommended by their peers to be among the top lawyers in Illinois.

Chicago, January 30, 2020
Illinois Super Lawyers Recognizes 25 Swanson, Martin & Bell, LLP Attorneys
Swanson, Martin & Bell, LLP announces that 12 attorneys were named to the 2020 Illinois Super Lawyers list and another 13 were named to the 2020 Illinois Rising Stars list.

Chicago, April 10, 2019
Law360 Profiles New Lateral Partner Will Greubel
"What I was looking to do was just continue to grow my practice in the area of professional negligence and other related areas like medical device litigation and also to learn from a new group of people and be at a bigger firm with more options and resources available," Greubel said.

Chicago, March 27, 2019
Lateral Partner Joins Swanson, Martin & Bell, LLP's Medical Negligence and Healthcare Practice
William P. Greubel, III will focus on Medical Negligence and Healthcare.

Chicago, Libertyville, St. Louis, January 28, 2019
Illinois Super Lawyers Recognizes 29 Swanson, Martin & Bell, LLP Attorneys
Swanson, Martin & Bell, LLP is proud to have 14 Super Lawyers and 15 Rising Stars in 2019.

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