Brian Hughes

Brian Hughes is president of Holy Rosary Credit Union and has three decades of credit union experience. Hughes received both his Bachelor and Master of Science degrees in Management from Bridgewater State University. He resides in Greenland, N.H.




leadership-MarzinzikJohn Marzinzik


John Marzinzik has a long history of serving in the financial field within the hospital environment. In 1980, he started as Director of Billing & Information Systems at North Adams Regional Hospital in North Adams, Massachusetts. Prior to becoming the Chief Financial Officer of Frisbie Memorial Hospital in 1993, Mr. Marzinzik was Vice President of Finance and Facilities at Exeter Hospital in Exeter, NH. He has also served as Comptroller for Katherine Shaw Bethea Hospital in Dixon, Illinois.

He earned a BS in Business Administration at Northeastern University and his MBA from the University of Massachusetts.

Marzinzik is a member of the Healthcare Financial Management Association. He is also a board member with the Medical Mutual Insurance Company of Maine

leadership-ShieldsJoe Shields

Senior Vice President

Joe Shields has nearly 30 years experience in hospital management. In addition to the development and implementation of the hospital’s strategic planning processes, Mr. Shields also oversees the hospital’s construction and renovation projects as well as physician recruitment efforts.

Prior to coming to Frisbie, Mr. Shields was the Director of Marketing Projects at the Osteopathic Hospital of Maine in Portland, and before that the Director of Community Relations at Cheshire Hospital in Keene, NH.

Mr. Shields has a Bachelor of Arts Degree from the State University of New York College at Plattsburgh and an MBA from Nasson College.

He is a certified Member of the American College of Healthcare Administration, and has served on numerous Boards of area non-profit organizations.


John-LevitowJohn Levitow, DNP, RN, NRP, NE-BC, CEN

Vice President, Patient Care Services & CNO

John Levitow started his career as a Registered Nurse in a trauma critical care unit, transitioned to a role in emergency nursing and finally moving to a role in critical care support. In addition to his clinical and leadership experience, John has 15 years of experience in emergency preparedness planning and response. He is involved in preparedness planning and response at the city, county and state levels. John joined Frisbie Memorial Hospital in 2006 as Director of Emergency Medical Services and Emergency Preparedness. In his 10 years at Frisbie, he has implemented a number of clinical programs that have improve the quality and delivery of care in the pre-hospital and emergency department settings.

John earned a B.S. degree in Nursing from Syracuse University, and a M.A. degree in Management from American Military University, as well as a Doctoral degree in Nursing from Old Dominion University. He is a Certified Emergency Nurse and maintains a paramedic license.


leadership-greenChristi Green BSN, RN, MS, PHR

Vice President, Human Resources

Christi Green began her career in healthcare as a Registered Nurse in high-risk labor and delivery, interventional radiology, and cardiology before transitioning into healthcare Human Resources in 2002. Christi joins Frisbie Memorial Hospital after 15 years in progressive leadership roles in Human Resources at Wentworth-Douglass Hospital. She is a Lean/Six Sigma trained Champion with expertise in leading organizational change including Employee Engagement, Performance Management, Decision Making and Communication, and Succession Planning. Christi’s Human Resources philosophy: “To take care of the people who care for our patients.”

Christi earned her Bachelor of Science degree in Nursing from Saint Anselm College in Manchester, N.H. and her Master of Science in Management with a concentration in Healthcare Administration from New England College in Henniker, N.H. She holds also a Professional Human Resources certification.

Christi is an active member of the Healthcare Human Resources Association of New Hampshire (HHRANH), having held the position of President from 2012-2014. She is a member of the Society for Human Resource Management (SHRM) and the American Society of Healthcare Human Resource Association (ASHHRA). Christi has presented on various Human Resources topics including Best Practices in Recruitment and Retention, Behavioral Interviewing, and Organizational Decision Making and Communication at local, regional and national levels.


leadership-mahoneyPaula Mahoney

Vice President, Physician Services

Paula Mahoney is a graduate of Boston University with a degree in Communications. Mahoney has over 30 years of progressive experience in dental and medical practice management with a focus on Provider Relations, Physician/Hospital Alignment and Quality Patient Experience and Outcomes.


Michael R.Dupuis, R.Ph, MHA

Vice President, Clinical Services

Mike received his Pharmacy degree from the Massachusetts College of Pharmacy and his Master’s degree in Healthcare Administration from Bellevue University. For over 36 years Mike has served in various leadership roles in pharmacy, hospital administration, and local nonprofit organizations, including 27 years in Manchester, N.H. at Catholic Medical Center and for the Elliot Health System. Mike had served previously as Executive Director for the N.H. State Board of Pharmacy and the Vice President of Clinical and Support Services as Crouse Hospital in Syracuse, New York. Mike has served on boards for numerous nonprofit organizations including the New York Heart Association, Merrimack Rotary Club, the NAVAC Volunteer Ambulance Co. in North Syracuse, New York, and on the National Association of Board of Pharmacy. To contact Michael Dupuis via email, click here.