Our Executive Team

President

David Fitzgerald is responsible for leading MAC’s seven-physician Management Committee. Dr. Fitzgerald joined MAC in 1990 and has served as the MAC President since 2000. Dr. Fitzgerald has a Bachelor’s degree in Biomedical Engineering from the University of California at San Diego, attended the University of Arizona College of Medicine and completed his anesthesia training at Stanford University Medical Center.

Vice President

Jordan Oelschlager is responsible for leading MAC’s operations including contracting, scheduling and practice management. Jordan joined MAC in 2018 after previously working in multiple roles within Physician Management since 2013. Jordan has a MBA from Duke University and a Bachelor’s degree in Finance from Indiana Wesleyan University.

Regional Medical Director

Kurt Dittmar has a Bachelor’s degree in Chemical Engineering from Michigan State University. He then attended the University of Michigan where he obtained his MD and a PhD in Pharmacology. His anesthesia training was at the UCSF Medical Center. Since joining MAC in 2003, he has served in many leadership roles at MAC, including medical director at John Muir Concord for over 8 years, chairman of the Operations Committee and a member of the Management Committee.

Regional Medical Director

Johnica Eyvazzadeh Blevans is a member of MAC’s Management Committee. Dr. Blevans joined MAC in 2007 and has served a Medical Director of San Ramon Regional Medical Center and Novato Community Hospital. Dr. Blevans majored in biomedical sciences and completed her combined BS/MD in the UCR/UCLA accelerated medical program. She did residency and fellowship in cardiac anesthesia at Massachusetts General Hospital.

Regional Medical Director

Dr. Peters is a member of the MAC Management Committee. He completed his medical school training at the University of Pretoria, South Africa, and his Anesthesia Residency program at Harvard Medical School, Brigham and Women’s Hospital. He holds an MBA from the University of California Berkeley. Since joining in 2004, Dr. Peters has been actively involved in various administrative and leadership roles within MAC. At John Muir Health, Dr. Peters served as Department Chair, Chief of Staff and on the System Board of Directors.

Director of Operations

Jeannemarie is responsible for leading MAC’s Operations. Jeannemarie is an RN and joined our team in 2019 with 25 years of experience. Her professional focus has been in peri-operative quality care and operations, including roles such as OR Staff RN, Peri-operative CNS, OR Manager, and OR Assistant Director. Jeannemarie is an Advanced Practice RN and Board Certified as a Clinical Nurse Specialist. She has a Master’s Degree in Critical Care/Trauma from University of California, San Francisco and Bachelor’s Degree in Nursing from Arizona State University.