MCSO Organizational Leadership & Executive Staff


John Hennessy, Chief Executive Officer

Karen Neumann, Comptroller, Human Resources

Tanya Flanagan, Manager of Medical Billing

Ernestine Sonneman, Manager of Surgical Billing and Coding

Michael Urban, Manager of Laboratory Services

Paula Mateo, Compliance Officer/Manager

Jason Heyland, Area Manager

Laura Knaus, Manager

Bianca Ramos, Manager

Val Constantino, Manager

Tammy Begeske, Manager

Sandy Pekala, Manager


MCSO Executive Committee


John Hennessy

Fadi Habib, MD

Neil Friedman, MD

Marko Jachtorowycz, MD

Mark Schacht, MD