CMS Leadership

Office of the Administrator

Jennifer Main

Chief Operating Officer

Jennifer Main is CMS’ Chief Operating Officer (COO). As CMS’ senior operations executive, she is accountable and responsible for a wide range of functions including financial management, information technology, acquisition, human capital, facilities, strategic planning and enterprise risk management.

Prior to joining CMS in August 2016 as the Chief Financial Officer (CFO), Ms. Main spent the majority of her over 25 year career in the area of financial management, both in the private sector and federal service. She has held the title of CFO in five different organizations over the span of her career, leading her various teams in the development and implementation of a myriad of solutions to complex financial challenges. 

Jennifer most recently served as COO and CFO of Millstein & Co., a boutique investment bank.  She was responsible for creating and managing all financial, human resource and technology operations and systems to support the company’s financial advisory and investment business for their New York and Washington, DC offices. Prior to this position, she was CFO and Senior Vice President of Finance for the Oakleaf Waste Management Company where she was responsible for driving resolution of contract management and billing control weaknesses which contributed to a 300% improvement in the 2010 year’s earnings. 

Ms. Main served as CFO for the Troubled Assets Relief Program (TARP) program at the U.S. Department of Treasury.  Ms. Main led the design, development and successful implementation of all areas of financial management for the $700 billion highly publicized TARP --established to restore financial stability. This program received an unqualified financial audit opinion in the first year of the program.

From 2002-2008 Ms. Main served at the U.S. Small Business Administration (SBA), first as the Deputy CFO and then the CFO.  She led a major change management initiative to resolve extensive financial management problems which resulted in the SBA achieving an unqualified audit opinion from 2005-2008. Ms. Main provided analytics and strategic support for management of the SBA $86 billion loan portfolio.

Ms. Main holds a Master’s degree in Public Policy from Harvard University and a Bachelor’s degree from Cornell University in History.