SPECIALTIESCatalyst Medical Group has over a diverse range of preventive, diagnostic, and treatment specialties and services.Locations All LocationsLewiston OrthopaedicsValley Medical Center Providers All ProvidersCraig Ambroson, M.D.Barbara Arnzen, P.A.-CDanielle Barnes, P.A.-CBryan J. Beardsley, M.D.Geneen Bigsby, D.O.Steven Boyea, M.D.Natale Carasali, M.D.Stephanie Carpenter, F.N.P., P.M.H.N.P.Todd Carpenter, F.N.P.Carol Chandler, N.P.Gregory D. Dietrich, M.D.Timothy Dykstra, D.O.Melanie Eggleston, M.D.Carol Ellis, F.N.P.Eric Fast, F.N.P.Timothy Flock, M.D.Thad Giblette, NPRegan Hansen, M.D.Andrea Hedrick, M.S.N. C.N.M.Rebecca Horne, N.P.James Maguire, D.O.Lynley James, F.N.P.J. Adam Jelinek, M.D.Darby Justis, M.D.Theodore Krisher, M.D.Bob Mahal, N.P.Cheryl Mallory, M.D.Kathy Morris, F.N.P.Rychael Morton, P.A.-CGreg Obray, P.A.-CTodd Parkey, M.D.Bret Paulson, P.A.-CDavid Petersen, M.D.Anita Ringering, F.N.P.Zach Ripley, D.O.Angela Roth (Richmond), M.D.Andy Schug, P.A.-C.Gregory Schultz, M.D.Carmen Stolte, F.N.P.Kaden Thueson, P.A.-CNeil Washington, D.P.M.Alex Watson, M.D.DeWayne L. Weaver, M.D.Charla Willis, M.D.Alexis Zander, P.A.-C Behavioral Health Coumadin Clinic Dermatology Express Care Family Practice Foot and Ankle Medicine and Surgery Hand Surgery Internal Medicine Laboratory and Testing Services Obstetrics and Gynecology Occupational Medicine Orthopaedic Surgery Pediatrics Podiatry Radiology Spine Surgery Sports Medicine Urology Find Your Nearest Location Locations