Leadership Team

Jeffrey Le Benger serves as Chief Executive Officer of Summit Health and Westmed. He is a member of the American College of Surgery, American Rhinologic Society, and American Society of Head and Neck Surgery. Dr. Le Benger is a recipient of the MDx Medical, Inc. Patient's Choice Award. He is featured in the New Jersey Family "New Jersey's Favorite Kids' Docs" and New Jersey Monthly "Top Doctors" listings. Most recently, he was included in the 2015 NJBiz “Power 100” list.

Adam Barrison, MD, is President and Chief Physician Executive of Summit Health, a multispecialty medical group of more than 1,500 clinicians providing comprehensive primary and specialty care across New York and New Jersey. In this role, he oversees clinical strategy, physician leadership, and the continued evolution of Summit Health's value-based care and population health initiatives. He also serves as President of Summit Health Cares, the organization's philanthropic arm supporting community health, cancer research, and access-to-care programs throughout the communities Summit Health serves.

Dr. Barrison is a board-certified gastroenterologist who has practiced at Summit Health since 2001. He previously served as Vice Chair of the Board of Directors, was named Chief Physician Executive in 2019, and was promoted to President in 2025. His administrative portfolio includes oversight of physician engagement, clinical operations, compensation design, quality and safety, medical professional liability, and the integration of affiliated physician groups. He is a board member of Diamond Hill Insurance, Summit Health's captive risk retention group, and has been active in policy matters relating to physician practice, restrictive covenants, and ambulatory care delivery.

Dr. Barrison received his undergraduate degree from Columbia University and his medical degree from NYU Grossman School of Medicine. He completed his internal medicine residency at Beth Israel Deaconess Medical Center and his gastroenterology fellowship at Boston University Medical Center. He is a member of the American Gastroenterological Association and the Alpha Omega Alpha Honor Medical Society.

Jack V. Cappitelli, MD, has served as Chief Medical Officer, New Jersey Region, at Summit Health since 2020, and before that he was Regional Medical Director for Northern New Jersey. Prior to joining Summit Health in 2017, Dr. Cappitelli served for 14 years as President and Managing Partner at New Jersey Associates in Medicine, where he practiced as a board-certified internal medicine physician since 1998.
 
After completing his undergraduate education at Rutgers University, Dr. Cappitelli earned his Doctorate in Medicine from the University of Medicine and Dentistry of New Jersey Medical School. He received his Internal Medicine Training at the University of Medicine and Dentistry-Robert Wood Johnson Medical School, where he also earned the honor to serve as Chief Medical Resident and received an Outstanding Teaching Award.

Nicholas L. Pantaleo, MD is board-certified in family medicine and provides comprehensive care for patients of all ages. He earned his Bachelor of Science degree, magna cum laude, from the Sophie Davis School of Biomedical Education at the City University of New York Medical School at The City College of New York. He received his medical degree from Albany Medical College in Albany, New York, and completed his residency in family medicine at Jamaica Hospital Medical Center, where he was elected Chief Resident.

Prior to joining Summit Health (formerly Westmed Medical Group), Dr. Pantaleo served as Medical Director for Medisys St. Albans, part of Jamaica Hospital Medical Center.

Since 2019, Dr. Pantaleo has held key leadership roles in primary care, helping to guide clinical operations, physician engagement, and strategic growth initiatives across the organization. In 2021, following the partnership transaction with Summit Health, he was appointed Service Line Chief of Internal and Family Medicine, where he played an instrumental role in integrating teams, advancing care delivery, and strengthening alignment across practices.

Dr. Pantaleo is a member of the American Academy of Family Physicians and is recognized for his commitment to high-quality, patient-centered care and physician leadership.

Jennifer Marchitto, AuD, has served as Executive Vice President and Chief Operating Officer of Summit Health’s New Jersey Region since 2022, providing leadership over the organization’s clinical operations and helping guide strategy, growth and the optimization of Summit Health's connected, patient-centered care. Since joining Summit Health in 2002, she has held a series of senior leadership positions and played an important part in the organization’s ongoing expansion, while ensuring the group remains focused on improving access, coordination and the patient experience.

As a doctor of audiology, she began her career advising underserved school districts on the child study team and later worked in Atlantic Health’s Rehabilitation Services Department before joining Summit Health’s ENT and Allergy department. Her leadership is grounded in a strong clinical foundation and a commitment to building high-performing, community-focused teams. She is especially proud of the operational leadership team Summit Health has cultivated over the past decade and remains focused on fostering a culture of belonging for employees while creating an environment where every patient feels welcomed, supported and connected to their care.

Karen Dolman is Executive Vice President and New York Chief Operating Officer, where she provides strategic and operational leadership across the organization. With extensive experience in healthcare operations, clinical administration and organizational transformation, she helps shape enterprise strategy, and supports the continued growth and integration of care delivery across the New York market. Ms. Dolman joined Westmed Medical Group in 2012 and held numerous senior leadership roles before being appointed Chief Operating Officer in 2018.

Having begun her career as a registered nurse and held leadership positions at NYU Langone Health and Lenox Hill Hospital, Ms. Dolman brings a strong clinical foundation to her executive leadership. She earned bachelor’s degrees in psychology and nursing, as well as a master’s degree in nursing administration from New York University. In 2019, she was recognized by Crain’s New York Business as one of its Notable Women in Health Care for her leadership and contributions to healthcare operations and patient care delivery.