Meet Our Medical Weight Loss Professionals [cf]video[/cf] Ethan Lazarus, M.D. Heather Thomas, P.A.-C Registered Dietitian Nutritionists Mary Ellen Doukakis, R.D.N. Liz Hurst, R.D.N., C.D.E. Susan Ellis, R.D.N. Lisa Ininns, R.D.N., C.D.E.