Leadership
Christoper M. Andreoli, MD, MBA
Optum Massachusetts
Chief Executive Officer
Optum Massachusetts
Dr. Andreoli is an innovative healthcare leader focused on providing patient-centered care and service in a clinical environment that attracts and nurtures top clinical talent. As the head of two longstanding physician groups steeped in the provision of value-based healthcare, Dr. Andreoli is committed to designing population health programs and services that deliver high-quality patient care, while making efficient use of resources.
Previously, Dr. Andreoli served as Chief Operating Officer and Chief Transformation Officer for Atrius Health with responsibility for innovation, digital health, clinical operations, and real estate. During his 15 years with this organization, he has served in a broad range of clinical and operational leadership roles including Chair of Surgical Specialties, Chief of Ophthalmology and Medical Director of Commercial ACO Programs.
Dr. Andreoli received his undergraduate degree from Boston University and his medical degree at Boston University School of Medicine. He completed his residency in ophthalmology and fellowship in vitreo-retinal surgery at the Massachusetts Eye and Ear Infirmary/Harvard Medical School. He also holds a Master of Business Administration from the MIT Sloan School of Management. Dr. Andreoli maintains a clinical practice as a vitreo-retinal surgeon and is involved in clinical research and teaching through his appointments at Harvard Medical School and the Massachusetts Eye and Ear Infirmary.
Thad Schilling, MD
Optum Massachusetts
President, Chief Medical Officer
Optum Massachusetts
Linda M. Coccola
Optum Massachusetts
Chief Marketing & Communications Officer
Optum Massachusetts
Kristen Dulling, DNP
Optum Massachusetts
Chief Nursing Officer
Optum Massachusetts
Purnima Jain
Optum Massachusetts
Chief Financial Officer
Optum Massachusetts
Stephen KNox
Optum Massachusetts
Chief Operating Officer
Optum Massachusetts
Stephen Knox is a seasoned healthcare executive with a career spanning over three decades. Since joining Reliant Medical Group in 1998, Stephen has been instrumental in shaping the organization's strategic direction and operational excellence. As Chief Operating Officer (COO), Stephen brings a wealth of experience and leadership to his role, overseeing all facets of clinical operations, real estate/facility management, and supply chain logistics.
In 2015, Stephen was appointed Acting Chief Operating Officer, a testament to his exceptional leadership qualities and strategic vision. The following year, he assumed the position permanently, driving innovation and efficiency across the organization. Collaborating closely with Dr. Thad Schilling, Stephen co-led Reliant's ambitious "Care Transformation" strategy, ushering in a new era of patient-centric and provider team-based healthcare as well as the relocation of our practices to ten state of the art facilities across Central Massachusetts.
His dedication to advancing healthcare delivery culminated in his appointment as Chief Operating Officer for Optum Massachusetts in 2023, with oversight of both Reliant Medical Group and our eastern Massachusetts counterpart medical group – Atrius Health. At the helm of Optum Massachusetts Operations, Stephen leads a dynamic team responsible for transforming patient care delivery and optimizing clinical support functions.
Stephen's academic credentials include a Bachelor of Science in Health Care Management from the University of Connecticut and an MBA from the University of Hartford. His journey at Reliant began in the Finance department, where he held increasingly senior positions before transitioning to executive leadership. Prior to Reliant, Stephen honed his expertise at UMass Memorial Health Care and Blue Cross Blue Shield of New Jersey, gaining invaluable insights into payer relations and financial operations.
As a pivotal member of the Optum Massachusetts Executive Team, Stephen's multifaceted experience spans payer, hospital, and physician domains, making him an invaluable asset in navigating the complexities of the healthcare landscape.
Craig Monsen, MD
Optum Massachusetts
Chief Information Officer
Optum Massachusetts
Craig Monsen is the Chief Information Officer serving Atrius Health and Reliant Medical Group. As a practicing internal medicine physician and technologist, Craig aims to uplift health care information systems to make it easy for care teams to provide simple, high-value care.
Craig’s professional responsibilities include overseeing a team of technology professionals responsible for the Epic Electronic Health Record, Data & Analytics, Infrastructure & Operations, Applications, and Client Services. His efforts focus on enhancing provider experience, improving performance in value-based care arrangements, enabling secure health information exchange, and growing primary care through improved digital access. Beyond Massachusetts, Craig’s work has been central to several cross-industry health and technology collaborations, generated two digital health companies, garnered national recognition and awards from the Robert Wood Johnson Foundation, US Health and Human Services, Microsoft, Harvard University, and Cigna, and led to multiple peer-reviewed contributions to the informatics literature. Craig continues to serve as an instructor at Harvard Medical School, a member of the Epic Care Everywhere Governing Council, and director on the Board of the Massachusetts Health Data Consortium.
Previously, Craig served as Chief Medical Information Officer at Atrius Health. He is dually-certified in Clinical Informatics and Internal Medicine. He completed his residency with Primary Care focus in the combined Brigham and Women’s Hospital/Atrius Health/Harvard Medical School program. Prior to that, he obtained his MD at Johns Hopkins and graduated with Highest Honors in engineering at Harvard.
Sandra Reddington
Optum Massachusetts
Chief People Officer & Chief Strategy Deployment Officer
Optum Massachusetts