Changing healthcare as we know it.

From our humble beginnings, we held one goal and one mission in mind, to bring healthcare to underserved communities. And since 2012 we’ve been able to accomplish that. But we’re not done. Our leadership team is built for what the future of healthcare should look like, with interspersed disciplines working amongst each other to bring better health outcomes for our patients and communities we are proud to serve. 

Leadership Team


  • Mike Pykosz, Chief Executive Officer


    Geoff Price, Chief Operations Officer


    Griffin Myers, Chief Medical Officer


    Tim Cook, Chief Financial Officer


    Rob Guenthner, Chief Legal Officer


    Tamara Jurgenson, Chief Growth Officer


    Jason Van Den Eeden, Chief Technology Officer


    Cynthia Hiskes, Chief Human Resources Officer


    Drew Crenshaw, Chief Population Health Officer


    David Buchanan, Chief Clinical Officer



  • Brian Clem, President


    James Chow, President of Managed Care Operations


    Caroline Sommers, Senior Vice President Clinical Quality


    Grace Chen, Senior Vice President Care Services


    Lindsay Arnold Sugden, Division President IL/MS/TN/TX


    Julie Silverstein, Division President NY/PA/RI


    Rafe Petty, Division President IN/MI/NC/OH


    Ali Khan, Executive Medical Director IL/MS/TN/TX


    Mark Bustamante, Executive Medical Director IN/MI/NC/OH


    Marisa Rogers, Executive Medical Director NY/PA/RI


At Oak Street Health, we focus on the quality of our patients’ lives and that’s when great things happen.

Griffin Myers, Chief Medical Officer and co-founder