About Us. To learn about our Penn Yan Physical Therapists and staff, select the "Our Team" tab. Within the Lattimore network of clinics, we currently offer 20 convenient locations in Monroe, Livingston, Ontario and Yates Counties. Lattimore provides access to more than 50 certified Physical Therapists. We have experience treating most conditions and injuries, and in most cases are able to schedule our patients' first appointment within one week. We offer initial consultations within 24 hours for your convenience.