Mary Jo Williamson is the chief administrative officer 
of Mayo Clinic Laboratories, which includes 
BioPharma Diognostics and Mayo Clinic Cardiac Monitoring. These diagnostic businesses empower healthcare professionals around 
the world by advancing patient care and expanding 
access to specialized testing.
Ms. Williamson has served as chief administrative 
officer of Mayo Clinic in Rochester, responsible 
for clinical activities at Mayo Clinic’s Rochester 
campus. In addition, she also has served as chief 
administrative officer of Mayo Clinic Health System, 
a network of clinics, hospitals and other health care 
facilities with physical presence in 39 communities 
in four regions in Minnesota and Wisconsin.
Ms. Williamson previously was chair of Practice 
Administration at Mayo Clinic and director of the 
Mayo Clinic Care Network, a collaboration to share 
Mayo’s clinical knowledge and expertise with select 
healthcare organizations around the globe. During her 
over 30-year career with Mayo Clinic, Ms. Williamson 
has held various leadership roles across the Midwest, 
as well as at Mayo Clinic in Arizona and Mayo Clinic in 
Florida. She helped develop the Ask Mayo Clinic nurse 
triage service and was vice chair for Contracting and 
Payer Relations and Mayo Clinic Health System.
Ms. Williamson also has been a member of the Mayo 
Clinic Management Team, Mayo Clinic Clinical Practice 
Committee, Midwest Executive Operations Team, 
Mayo Clinic Administrative Team, the Mayo Clinic 
Board of Governors, and the Mayo Clinic Board of 
Trustees. Prior to Mayo Clinic, she worked in the 
Strategic Services Division of Anderson Consulting 
and as director of budgeting for Rose Medical Center 
in Denver.
Ms. Williamson holds a Bachelor of Science in 
finance and accounting from Arizona State University 
and an MBA from Southern Methodist University. 
In addition to her Mayo Clinic responsibilities, she 
serves on the boards of the Minnesota Chamber of 
Commerce, American Medical Group Association, 
and Resoundant Inc.