About Us. PESCM. located in San Rafael, is the original 24/7 veterinary hospital in Marin County, with specialties in Internal Medicine, Oncology, Ophthalmology, Surgery, Neurology, Cardiology, Emergency, Critical Care and Radiology. Our mission is to serve pets and their people by continually pushing to improve our medicine, our service, our communication, and ourselves. Why Join Our Team: We are not your typical veterinary hospital. PESCM is ru...