Having grown up on the South Shore, it is a pleasure to care for patients of this region. I served in the US Navy following medical school and completed my surgical training through the Navy. Following multiple military assignments, I chose to return to the area in order to serve my local community and reside closer to my family. 

My mission is to provide patient-centered care allowing our patients to access trustworthy and well-informed care.

My personal philosophy in life is to be kind and compassionate. My background is in adult-gerontology and neurosurgery. I aim to create patient-centered relationships where my patients feel comfortable disclosing any concerns. In addition, I aim to provide open communication. Outside of work, I enjoy volunteering at a local nursing home and a local food bank, and performing in an dance group in ballet, jazz, contemporary and hip hop. I also enjoy hiking and exploring local trails.

Dr. Christopher Cannell is a doctoral-trained Physician Associate with over 22 years of multidisciplinary clinical experience in Emergency Medicine (CAQ-EM), Orthopedics, Critical Care, and Internal Medicine. He is nationally recognized for his leadership and expertise in healthcare quality, patient safety, and risk mitigation.  He is a frequent invited speaker on Provider Clinical Risk Management and a blogger for medical liability companies on these critical topics.

Dr. Cannell is a successful entrepreneur leading a six-figure consulting firm where he also trains and encourages other healthcare provider entrepreneurs to explore their passions, niches, and grow their own business.

Dr. Cannell has held key leadership positions including current President of PAs in Legal Medicine, Board of Directors for the Academy of Doctoral PAs and previously with Massachusetts Association of PAs, and Board Advisor for the SCUHS Doctor of Medical Science program. He has led clinical teams as an APC Director, Department Lead, healthcare system, program manager and thought leader and Chair of APC career letter committee, driving innovation in quality improvement, documentation, onboarding, population management, operations, and value-based care initiatives across health systems.  Created POCUS acute care program for PAs and NPs at the largest community hospital in Massachusetts in alignment with the department ultrasound director. 

Dr. Cannell is an experienced medical professional legal consultant (MPLC) and expert witness, certified through Auburn University and The Center for Legal Studies. He has over 8 years of experience providing expert witness and consulting services focused on clinical risk assessment, discovery, and standard of care.  His collaborative consulting work spans clinicians, legal teams, malpractice insurance consultants, executives, AI technology, and life sciences organizations.

A dedicated educator and mentor, Dr. Cannell serves as Assistant Professor Doctor of Medical Science Program at The University of Lynchburg, current adjunct faculty for the Doctor of Medical Science Program at Marshall B. Ketchum University and also previously with South College (Healthcare Law & Policy), and currently for Northeastern University School of Medical Sciences PA Program, and the Tufts School of Medicine PA Program. He is a subject matter expert in generative AI development, educational consulting for early career and transitional career NPs and PA’s, and interprofessional collaboration to advance the Quadruple Aim.

Dr. Cannell completed leadership training in Just Culture, High Reliability, as well as patient safety through the Institute for Healthcare Improvement (IHI). He earned his DMSc from the University of Lynchburg, MPAS from MCPHS–Boston, and BA in Pre-Medical Studies and Psychology from Muhlenberg College. He has done additional leadership training from AAPA from The Center for Healthcare Leadership and Management.

My treatment focus is to ensure that each and every patient receives the best care and that their care plan is tailored to meet their individual needs and diagnosis. 

I believe that working with hematology and oncology patients is a calling and it is truly an honor to be a part of each patient’s care. It is extremely important that every patient have a treatment plan that fits their diagnosis and needs, and that this plan is communicated clearly with all members of the treatment team.

Outside of work, I enjoy reading, hiking, and walking the beach.

As a primary care clinician, I have the opportunity to develop a trusting partnership with my patients and their families to help them live a healthy lifestyle. I enjoy diagnosing and treating the various illnesses that affect patients during their lifetime, and take great pleasure in seeing them recover. It is important for me to listen carefully to my patients' concerns so we can work together to meet their individual healthcare needs.  

In my free time, I enjoy swimming, running, cycling, and skiing, in addition to spending time with my husband, adult children, and our new granddaughter.

William Tollefsen, MD is the EMS and MIH Medical Director for South Shore Health. Dual-boarded in Emergency Medicine and EMS Medicine, Dr. Tollefsen works clinically as an Emergency Physician at South Shore Health in addition to his role as EMS Medical Director.

One of few physicians in the country to receive the prestigious "FAEMS" recognition, Dr. Tollefsen is also the Medical Director for OEMS Region IV, serving 61 cities and towns of the Metro-Boston EMS Council. As the current EMS Medical Director for eight municipal and three private ambulance services on the South Shore, Dr. Tollefsen interacts and provides oversight for over 400 Paramedics.

Dr. Tollefsen graduated from New York Medical College and completed residency training in Emergency Medicine at Harvard University, Brigham and Women's, and Massachusetts General Hospital. He completed a fellowship in Emergency Medical Services and Critical Care Transport at the University of Massachusetts, where he worked as an Emergency Physician and Flight Physician for UMASS LifeFlight. He completed an MBA at the Isenberg School of Management at UMASS Amherst, and holds a Master of Medical Science degree from the Boston University School of Medicine.

A former pre-hospital provider, he is actively involved in EMS system design, paramedic education and Critical Care Transport Systems. He works closely with multiple EMS, Fire and Law Enforcement agencies throughout Massachusetts.

His research interests include systems of care, resuscitation, airway management, and paramedic education.

My mission is to provide compassionate care for patients in challenging times.

It is a privilege and an honor to stand alongside patients and their families during some of the most difficult times they may face. I strive to provide thoughtful, effective, and compassionate care while maintaining clear and honest communication throughout the treatment and recovery process in the ICU. So you can get to know me, some of my hobbies include Dodgers baseball, music, gaming, and exercise. I also enjoy traveling around the world with my lovely wife.

It has been my privilege to practice medicine and to have made a difference in the lives of my patients over the past 21 years. I enjoy the challenges of practicing internal medicine in a hospital setting and working as part of a team with our excellent hospitalist providers, consultants, nursing and ancillary staff. I served as Medical Director of the Hospitalist Department from 2009-2015 and am proud to say that we have an amazing program with dedicated clinicians who genuinely enjoy the care of hospitalized patients and are committed to excellence in their every day work. I enjoy giving back by participating in the Pan Mass Challenge which raises critical funds for cancer research and the Multiple Sclerosis cycling events. I enjoy boating, hiking and camping, and long distance bicycling and, most importantly, spending time with my family.

Liana MacDonald is a Women’s Health Nurse Practitioner. She graduated from Regis College with a Master of Science in Nursing in 2020. She obtained her Bachelor of Science in Nursing from the University of Massachusetts Boston in 2016 and began her nursing career in the Emergency Department. She has been working as a Labor and Delivery nurse since 2019.

Liana is passionate about health equity and eliminating the gap in care amongst different races and ethnicities. She is proud of her focus on adolescent health, substance use disorders in pregnancy, and trauma-informed care.  

When not at work, Liana can be found spending her time with family, friends, and her rescue dog. She loves to travel to new cities and countries and learn about different cultures. She also loves to give back to her community.

I provide comprehensive care to vascular patients. This ranges from the treatment of peripheral arterial disease, venous insufficiency and aneurysms, as well as hemo dialysis access.

I also have advanced wound care certification, as well as a board certification in Hyperbaric Oxygen Therapy.

It is a privilege to help people and establish long-term relationships with my patients. I believe that everyone's medical care should be individually tailored. We all have unique characteristics that need to be considered when deciding a treatment plan. Communication is paramount. 

I enjoy traveling to difference parts of the country and sampling unique cultures and cuisine. Having grown up in the Boston area, I enjoy watching sports with the local teams, and playing golf.