First in St. Charles County-ABVP CERTIFIES VETERINARIAN IN Canine and Feline PRACTICE Marcy Hammerle, DVM, of O’Fallon, MO has been certified as a Diplomate by the American Board of Veterinary Practitioners (ABVP) specializing in Canine and Feline Practice. There are only 7 veterinarians in Missouri who have reached this high honor of certification. Dr. Hammerle is the first in St.
Charles County.