Image of Matt McMillion

Matt McMillion

Director
Chicago

Matt McMillion

Director | Chicago

About

Matt McMillion is a Director in our Chicago office, with more than a decade of experience leading strategy and commercial diligence engagements for investors and operators. He specializes in M&A, portfolio strategy, and value creation, with a primary focus on healthcare


Matt has expertise across the healthcare ecosystem, including provider services, revenue cycle management (RCM), and healthcare IT (HCIT) for providers and payors. Prior to joining Grant Thornton Stax, Matt led Corporate Strategy at R1 RCM, where he was responsible for M&A activity and post-deal value creation across the RCM and provider services space. Before that, he was an Associate Partner in the Private Equity Group at Bain & Company, where he advised private equity and corporate clients on growth strategy and commercial diligence, with a focus on healthcare services and technology. 


Matt holds an MBA from the University of Virginia’s Darden School of Business and a BA in Economics and History, also from UVA. 

Extracurricular

Whether by land or sea, Matt enjoys spending his free time adventuring—If you’re in Chicago, you’ll likely spot him sailing out of Belmont Harbor on his 1975 Tartan or biking around the city with his wife and daughters. 

Grant Thornton Stax Advises Ares and AIR on KAON Acquisition​
January 12, 2026
Grant Thornton Stax supported Ares and its portfolio company, AIR, on its recent acquisition of KAON Automation, an Ireland-based industrial automation company. Read more here.
ESG Trends to Watch: Grant Thornton Stax’s Top 10 for 2026
By Anuj A. Shah January 9, 2026
Grant Thornton Stax Partner and ESG practice leader, Anuj A. Shah, shares the top 10 ESG trends to watch for 2026. Click to read more.
Grant Thornton Stax Sell-side Support: Sur-Seal Acquired by BGCP
January 9, 2026
Grant Thornton Stax congratulates Sur-Seal, a leading advanced materials converting platform, on its recent acquisition by Brodie Generational Capital Partners. Read about the deal here.
Image of Matt McMillion

Christine O'Connell

Matt McMillion

Director

Chicago

Associate Director | London

About

Matt McMillion is a Director in our Chicago office, with more than a decade of experience leading strategy and commercial diligence engagements for investors and operators. He specializes in M&A, portfolio strategy, and value creation, with a primary focus on healthcare


Matt has expertise across the healthcare ecosystem, including provider services, revenue cycle management (RCM), and healthcare IT (HCIT) for providers and payors. Prior to joining Grant Thornton | Stax, Matt led Corporate Strategy at R1 RCM, where he was responsible for M&A activity and post-deal value creation across the RCM and provider services space. Before that, he was an Associate Partner in the Private Equity Group at Bain & Company, where he advised private equity and corporate clients on growth strategy and commercial diligence, with a focus on healthcare services and technology. 


Matt holds an MBA from the University of Virginia’s Darden School of Business and a BA in Economics and History, also from UVA. 

Extracurricular

Whether by land or sea, Matt enjoys spending his free time adventuring—If you’re in Chicago, you’ll likely spot him sailing out of Belmont Harbor on his 1975 Tartan or biking around the city with his wife and daughters. 

Grant Thornton Stax Advises Ares and AIR on KAON Acquisition​
January 12, 2026
Grant Thornton Stax supported Ares and its portfolio company, AIR, on its recent acquisition of KAON Automation, an Ireland-based industrial automation company. Read more here.
ESG Trends to Watch: Grant Thornton Stax’s Top 10 for 2026
By Anuj A. Shah January 9, 2026
Grant Thornton Stax Partner and ESG practice leader, Anuj A. Shah, shares the top 10 ESG trends to watch for 2026. Click to read more.
Grant Thornton Stax Sell-side Support: Sur-Seal Acquired by BGCP
January 9, 2026
Grant Thornton Stax congratulates Sur-Seal, a leading advanced materials converting platform, on its recent acquisition by Brodie Generational Capital Partners. Read about the deal here.
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