Medical Weight Loss Webinar Faculty Bios: Alphabetically

Dr. Christopher Keroack has been the leading expert in weight loss and healthy living in Western Massachusetts since 1998. What truly sets Dr. Keroack apart is his ability to care for patients interested in a foundational and balanced approach to health and weight loss. His integrated approach to health and wellness involves all aspects of nutrition, fitness and behavior in order to have a complete and enriching experience for you.

Dr. Keroack is double board certified in internal medicine and bariatrics. He has his formal education in Internal Medicine and has taken a one year fellowship with a focus on Weight Management Medicine. Over the course of his career, he has taken advanced courses in Age Management Medicine as well as Naturopathic and Integrative Medicine in order to create a comprehensive and systematic approach to health and vitality. As our medical director, Dr. Keroack continues to strive for excellence in lifestyle, integrative, medical and surgical approaches to weight loss. His expertise is essential for the safest and best weight loss experience as well as optimal living.

  • First Impressions: The Initial Workup & Comorbidities Medical Practitioners Only
  • The Role of Physical Activity and Exercise in Weight Loss
  • Meal Replacements, Protein Shakes & Bars: Making the Best Choices

A second-generation family doctor, Dr. Petteruti started off pursuing his goal of being a holistic provider of medicine, starting his medical training in Osteopathic Medicine.  After graduating with honors, he became attracted to weight loss medicine, which began a career-long interest in areas not commonly pursued by most doctors.  It’s that curiosity that drove him to become board certified in Bariatric Medicine to complement his board certification in Family Medicine.  It is this unique training combined with his own native intellect that has given Dr. Petteruti the ability to help his patients with problems that most physicians do not fully understand.

“Too often in medicine” says Dr. Petteruti, “we are left pursuing well worn pathways and if the patient’s condition doesn’t comfortably fit into that pathway, we feel incapable of helping them.  The patients tell us what they need and what they need is to feel better, live longer, and live better.  That’s the passion that drives my practice."

Dr. Petteruti has been pursuing that passion for more than 20 years, bringing a hard to find combination of empathy, intellect, clinical and didactic experience to help change the lives of his patients. His approach is holistic, comprehensive, complete and driven to pursue the solutions to the most difficult of problems.

  • Nutritional Behavioral Change: Motivational Patient Interviewing - Medical Practitioners Only
  • Drugs that Contribute to Obesity & the Risks of Rapid Weight Loss
  • Supplements and Nutraceuticals for Weight Loss
  • Prescription Drugs for Treating Obesity - Medical Practitioners Only
  • An Overview of Popular & Fad Diets
  • Bringing It All Together: Case Studies and Practical Application - Medical Practitioners Only

Kristina Spellman is the Director of Product and Program Development at SetPoint Health. Prior to joining SetPoint Health in 2009, Kristina was a research dietitian at the Center for the Study of Nutrition and Medicine at Beth Israel Deaconess Medical Center.

A primary responsibility included her role as a Look AHEAD Interventionist where she was involved in retention activities such as promoting, organizing and leading groups; one-on-one participant coaching; review and analysis of data and reporting. Additionally, she served as the DSE Coordinator for which responsibilities included newsletter development and production and also group facilitation.

  • Macro-Nutrients and the Glycemic Index: Guides for Obesity Treatment

Dr. Mark Tremblay has a Bachelor of Commerce degree in Sports Administration and a Bachelor of Physical and Health Education degree from Laurentian University. His graduate training was from the University of Toronto where he obtained his M.Sc. and Ph.D. from the Department of Community Health with a specialty in Exercise Science. Dr. Tremblay is the Director of Healthy Active Living and Obesity Research (HALO) at the Children’s Hospital of Eastern Ontario Research Institute and Professor of Pediatrics in the Faculty of Medicine, University of Ottawa, where he is also cross-appointed to the School of Human Kinetics, the School of Epidemiology, Public Health and Preventive Medicine, and the Ph.D. Program in Population Health. He is a Fellow of the American College of Sports Medicine, Chair of the Active Healthy Kids Global Alliance, Chair of the Canadian Physical Activity Guidelines Project, Founder of the Sedentary Behaviour Research Network, and former Dean of Kinesiology at the University of Saskatchewan.

Dr. Tremblay has published more than 250 papers and book chapters in the areas of childhood obesity, physical activity measurement, exercise physiology, sedentary physiology and health surveillance. He has delivered over 600 scholarly conference presentations, including more than 130 invited and keynote addresses, in 19 different countries. Dr. Tremblay has received an honorary doctorate and the Queen Elizabeth II Diamond Jubilee Medal for his leadership contributions to healthy active living in Canada. Dr. Tremblay’s most productive work has resulted from his 26-year marriage to his wife Helen, yielding four wonderful children.

  • Physical Activity and Sedentary Behavior: What Matters Most in Health Maintenance


Association Manager: Liz Pullman
1.800.532.3688  |

Member Services:
1.800.532.3688  |