Specialists Who Care About The Person Behind Every Goal.
Medical Director
Margarita McDonald, MD, Bariatrician
Dr. McDonald has been a physician for more than 20 years and is board-certified in both Obesity Medicine and Family Medicine. She is a member of the Obesity Medicine Association, American Academy of Family Physicians, and American Medical Association.
A graduate of Ursinus College, Tufts University School of Medicine, and the Abington Family Medicine Residency program, she has been passionate about obesity medicine throughout her career. Her approach centers on the individual—not a number—helping patients adapt practical health strategies as life changes.
Dr. McDonald believes that while we cannot control our genetics, we can build more intentional relationships with what we put in our bodies and how we care for them.
Dietitian
Liza Aschettino, MS, RD, LDN
Liza is a non-diet, weight-inclusive registered dietitian who helps patients improve their relationship with food in ways that support both mental and physical health. Her early experiences with diet culture, alongside a family history of diabetes and cardiac disease, inspired her to pursue nutrition as a path to better health.
She has worked with a broad range of conditions and cultures and partners with each patient to make food feel less restrictive and more supportive. Her guidance brings together food freedom, macronutrient balance, mindfulness at mealtimes, and nourishing foods that fit everyday life.
Liza is excited to share the knowledge and practical tools that can support a more balanced, healthful lifestyle.
Certified Personal Trainer
William Lacewell, CPT
William Lacewell, CPT is a NASM-Certified Personal Trainer dedicated to helping people improve their strength, endurance, balance, mobility, and overall health. He creates personalized fitness programs based on each client’s goals, abilities, and experience level.
William’s coaching style combines proper technique, motivation, accountability, and mental toughness. He believes personal training is more than leading workouts—it is about educating, encouraging, and helping every client build the confidence and discipline needed to achieve lasting results.