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Prior to joining Mitesco, Mr. Keller was the Chief Financial Officer, Secretary and Treasurer of First Choice Health Care Solutions, Inc. since July 2017, a $50 million integrated care platform of non-physician owned orthopedic and spinal care medical centers. He has also served as a member of the board of directors of CryoPoint, LLC, a leader in biorepository services and cryopreservation since April 2012 and as a member of the board of directors of Your Community Bank from May 2013 through December 2017. From November 2015 through July 2017, he was employed by Solution Management Corp, a specialty advisory firm focused on providing financial and operational consulting, as Managing Director. Additionally, from August 2014 through November 2015 he served as the Chief Financial Officer and Senior Vice President of Finance at RehabCare Inc., a $1.5 billion provider of physical, occupational, and speech-language rehabilitation services to hospitals, skilled nursing facilities and home care settings in 47 states.

From September 2011 through June 2013 he was Senior Vice President of Finance at PharMerica, Inc. (NYSE: PMC), a $1.8 billion institutional pharmacy, servicing skilled nursing and assisted living facilities, hospitals, and other long-term alternative care facilities. He also served as the Senior Vice President and Chief Accounting Officer of BioScrip, Inc. (NASDAQ:BIOS), a $1.6 billion specialty pharmaceuticals and homecare company providing comprehensive cost-effective solutions to patients, insurance payers and drug manufacturers, from February 2007 through April 2011. From 2000 through 2007 he served as Vice President of Finance, Chief Financial Officer and Treasurer for DMI Furniture Inc. (NASDAQ: DMIF) a $150 million vertically integrated manufacturer, importer and designer of commercial office and residential furniture sold through mass-market retails, wholesalers, and independent retailers.

Mr. Keller received his Bachelor of Science in Accountancy from Loyola University of Chicago and is a Certified Public Accountant and Chartered Global Management Accountant.