Kevin Miller. His primary practice is as a Respiratory Therapist, Registered: Home Health, also practicing as a Respiratory Therapist, Certified: Critical Care, a Respiratory Therapist, Certified: Home Health, a Respiratory Therapist, Registered: Critical Care, a Respiratory Therapist, Registered: Educational, a Respiratory Therapist, Registered: Pulmonary Diagnostics, and a Physiological Laboratory.