Marcus A. Oksa, MS, RCP

Chief Financial Officer/Chief Operations Officer


Marcus A. Oksa, MS, RCP, is a Lean Six Sigma Black Belt and has been a Baldrige facilitator and coach for multiple organizations. Marcus has served as President of the Wisconsin Medical Group Management Association (WMGMA) and is an Adjunct Faculty member at Bellin College and Marian University. Marcus is also a U.S. Army Gulf War veteran and Bronze Star recipient.  


Throughout his 20-year career Marcus has developed new, innovative methodologies for problem identification, waste reduction, strategic and tactical definition, and process and organizational mapping.  His techniques have been successfully applied in every department of a healthcare system with remarkable success. In addition to the anticipated outcomes of Lean Six Sigma cost and variation reduction, his projects have improved morale, built cohesive work groups, and empowered people to appreciate their work. 


Marcus lives with his wife Linda and children in Peshtigo, WI. 

our founders

The Business Sustainability Company

michael d. wentworth, asd

President/Chief Executive Officer


Michael D. Wentworth, ASD, has a 35-year career consulting in sales, marketing, advertising and market research for for-profit and non-profit organizations in virtually every market sector from start-ups to Fortune 500 companies including private equity firms.  His clients have included Sears, National Car Rental, 3M, Medtronic, HB Fuller, Brady Corporation, Tennant, Bellin Health, Subway Foods, Rockwell Automation, Marshfield Clinics, Yale New Haven Health System, US Captioning, Performa Inc., Pathmakers Inc., MCI, LMG Presses, and more.  


During his career, Michael has developed innovative methods in sales, competitive intelligence and qualitative research.  


Michael lives in Kaukauna, Wisconsin with his wife Laurie.