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
Executive Vice President, Chief Physician Executive, Atlantic Health System, President, Atlantic Medical Group
Integrated Care Delivery
Robert Adams
Senior Vice President, Atlantic Health System and President, Hackettstown and Newton Medical Centers
Trish O'Keefe, PhD, RN
Senior Vice President and Chief Nurse Executive, Atlantic Health System, and President, Morristown Medical Center

Maureen Schneider, PHD, MBA, RN, FACHE
Senior Vice President, Atlantic Health System and President, Chilton Medical Center

Stephanie Schwartz, MHSA, FACHE
Senior Vice President, Atlantic Health System and President, Overlook Medical Center
Quality, Patient Safety, Education and Research

Mahalaxmi Aburi, Ph.D., MHA
Vice President, Research

Stanley Fiel, MD
Chief Medical Officer, Morristown Medical Center

Eric Perez, MD
Chief Medical Officer, Chilton Medical Center

Geralda Xavier, MD
Chief Medical Officer, Hackettstown and Newton Medical Centers
Physician Enterprise
Thomas Kloos, MD
Vice President, Atlantic Health System and President, Atlantic Accountable Care Organization
Nursing and Patient Experience

Ophelia Byers, RN, DNP, APRN, WHNP-BC, NEA-BC, CPXP
Chief Nursing Officer, Overlook Medical Center, and Associate Chief Nurse Executive, Atlantic Health System


Donna Watridge, RN, MBA, CCRN-K
Chief Nursing Officer, Hackettstown Medical Center and Newton Medical Center
Administrative Leadership

Mike Walter
Senior Vice President, Chief Financial Officer

Sara Jones
Vice President, Workforce Experience

DANETTE SLEViNSKI, ESQ.
Vice President, Corporate Compliance and Internal Audit,
Chief Compliance, Privacy and Research Integrity Officer