Coronavirus update

Thank you for entrusting us with your health care. We understand the concern and uncertainty you may be feeling about coronavirus (also known as COVID-19). With your care and safety in mind, we are changing how we provide some services.

Your health and safety are our top priorities, today and every day. We are here to provide you with the care and support you need. We encourage you to stay informed about how to stay healthy and to learn what steps to take if you think you have COVID-19. For the most up-to-date information on Allina Health's coronavirus response, and the information you need to stay healthy, learn more here.

Leadership team

Kelly Spratt

Kelly Spratt


  • Length of service at Buffalo Hospital: Since March 2019
  • Education: MS degree, Health and Human Services Administration, Saint Mary's University; BS degree, management, Cardinal Stritch University, Milwaukee.

Robeck_Ben_2015 web

Benjamin Robeck

chief nursing officer; director of patient care and quality

  • Length of service at Buffalo Hospital: April 2020
  • Previous experience: Mercy Hospital, Patient Care Director of Emergency, Trauma Services and Critical Care; US navy; firefighter/EMT; flight RN with Life Link III.
  • Education: BS in Nursing, St. Catherine University; BA in Athletic Training/Health Education, St. Cloud State University. MS, Nursing Leadership at Minnesota State University (expected 2020)

Joshua Shepherd

director of operations

Education: Bachelor's degree in psychology from the University of Minnesota and master's degree in healthcare administration from the Carlson School of Management at the University of Minnesota. He is a Fellow in the American College of Healthcare Executives.


Robert Mullaney, MD

director of medical affairs

  • Length of service at Buffalo Hospital: Since July 2017.

Kristin Denne
director of human resources

  • Length of service at Buffalo Hospital: February 2018
  • Previous experience: Joined Allina Health in 2013 as a senior human resources generalist for the Allina Health Group. 
  • Education: MBA from Concordia University; Bachelor’s degree, management with human resources concentration, St. Cloud State University. 

Sandie Matrella

director of finance

  • Length of service at Buffalo Hospital: Since 2014, first as finance manager and now finance director
  • Previous experience: 21 years at Mercy and Unity hospitals, starting as a cost analyst and eventually becoming finance manager
  • Education: BS degree, Finance, Michigan Technological University
valerie enter

Valerie Enter

quality risk manager

  • Length of service at Buffalo Hospital: Since July 2000
  • Previous experience: Cardiac Services Supervisor, Excellian/IS Manager, and Safety and Quality 
  • Education: MS degree, Patient Safety Leadership, University of Illinois – Chicago; BS degree, Nursing, University of Phoenix.
Ashley Andersen

Ashley Andersen

foundation senior development associate

  • Length of service at Buffalo Hospital: Since July 2017
  • Previous experience: Event planner and development associate for Feed My Starving Children
  • Education: BA degree, Cultural Studies, Roehampton University, London, UK