Atlantic Health System’s leadership works to ensure that all of our initiatives help further our vision and mission, and that we provide the highest quality health care and best possible patient experience.


Steven J. Sheris, MD, FACC, FACP
Senior Vice President, Physician Enterprise
President, Atlantic Medical Group
Integrated Care Delivery

Robert Adams
Vice President, Atlantic Health System and President, Hackettstown and Newton Medical Centers


Trish O'Keefe, PhD, RN
Vice President, Atlantic Health System and President, Morristown Medical Center
Stephanie Schwartz, MA, FACHE
Vice President, Atlantic Health System and President, Chilton Medical Center

Quality, Patient Safety, Education and Research


Eric Perez, MD
Interim Chief Medical Officer, Chilton Medical Center

Physician Enterprise
Mark Calderon, MD
Chief Medical Officer, Atlantic ACO, Optimus Healthcare Partners and Healthcare Quality Partners


Thomas Kloos, MD
Vice President, Atlantic Health System and President, Atlantic Accountable Care Organization

Nursing and Patient Experience

Carol Jones, MSN, RN, NE-BC
Chief Nursing Officer, Morristown Medical Center

Maureen Schneider, PhD, MBA, RN, FACHE
Chief Nurse and Operations Officer, Chilton Medical Center

Mary Pat Sullivan, MSN, RN, CNS
Chief Nursing Officer, Chief Experience Officer, Overlook Medical Center
Donna Watridge, RN, MBA, CCRN-K
Chief Nursing Officer, Hackettstown Medical Center and Newton Medical Center
Administrative Leadership


Eva Goldenberg, Esq., CHC, CHPC
Vice President, Corporate Compliance and Internal Audit, Chief Compliance Officer, Privacy Officer, Research Integrity Officer



Dennis Lennon
Vice President, Human Resources

Benjamin Maisano
Vice President, Chief Digital and Innovation Officer
