McLaren Northern Michigan
Executive Team

Meet Our Leadership Team

  • Gar Atchison, President/CEO
    Gar Atchison
    McLaren Northern Michigan
  • Casey Kandow MBA, MS, Chief Operating Officer
    Andrew McDonagh, MD, FHM, FACP
    Chief Medical Officer
    Vice President Medical Affairs

    Dr. McDonagh received his medical degree from the Indiana University School of Medicine in 1987 and has maintained Board Certification in Internal Medicine since 1990. Early in his professional career, Dr. McDonagh practiced primary care medicine in rural communities in Montana, Maine, and New Hampshire.

    For the past 23 years, Dr. McDonagh practiced in Milwaukee, Wisconsin where he established the first independent clinical practice solely dedicated to hospital medicine in the state. In 2008, Dr. McDonagh joined Aurora Health Care as Medical Director of Hospital Medicine and, in 2013, assumed the position of Chief Medical Officer at Aurora West Allis Medical Center in Milwaukee.

    Dr. McDonagh comes to McLaren Northern Michigan with over 23 years of proven physician leadership experience. As a physician executive, his focus has been on enhancing patient safety and clinical quality through improving efficiency of care, encouraging care delivery innovation, and most importantly, fostering interdisciplinary collaboration.

  • Brent Mallek
    Brent Mallek, MBA
    Vice President of Human Resources

    Bio coming soon.

  • David Monan
    David Monan, MSN, RN
    Vice President of Patient Services, Chief Nursing Officer

    Bio coming soon.

  • Michael Prusaitis
    Michael Prusaitis, MBA
    Chief Financial Officer

    Mike joined McLaren Northern Michigan in March 2021 as Chief Financial Officer, bringing over 20 years of hospital finance experience.

    Over his career, Mike worked in hospitals in southeast Michigan in increasing leadership roles. Prior to joining McLaren Northern Michigan, he was the Senior Vice President and Regional Chief Financial Officer for Trinity Health – Saint Agnes Medical Center in Fresno, California.

    Mike hold a Bachelor of Business Administration in Finance from Walsh College of Accountancy and Business Administration in Troy, and completed his Master of Business Administration from Oakland University in Auburn Hills, Michigan.

    Shari Schult, MSN, RN
    Shari Schult, MSN, RN
    Interim Chief Operations Officer

    As Vice President of Operations, Shari Schult is responsible for overseeing all aspects of operations for multiple service lines and physician practices including Pharmacy, Lab, Neurosciences, Infectious Diseases, Nephrology, Diabetic and Nutrition Center, Radiology, and all clinical operations for the McLaren Northern Michigan Cheboygan Campus.

    Shari has provided the leadership necessary for a full and successful integration of the Cheboygan Campus. Overseeing all aspects of operations, Shari is responsible for the alignment of business and clinical processes in support of our Mission, which includes executive oversight of the Level II Trauma program. Shari is also leading our facilities planning and development teams from concept through execution as we renovate, modernize, and build for the future.

    Shari is a Registered Nurse, holds a Bachelor of Science degree in Nursing from the University of Phoenix, and a Master’s degree in Nursing specializing in leadership and management from Walden University.