In the United States, occupational therapists typically hold a master's degree or a higher degree in occupational therapy. Therefore, they are often addressed professionally using their first name or the title "Occupational Therapist" or "OT." For example, a person named John Smith, who is an occupational therapist, would be addressed as "John" or "John Smith, OT."
In some cases, occupational therapists might choose to pursue a doctorate degree (such as a Doctor of Occupational Therapy or OTD). If an occupational therapist holds a doctorate degree, they may use the title "Dr." before their name, just like any other individual with a doctoral degree.
It's important to note that while some occupational therapists may have a doctorate degree, the majority of practicing occupational therapists still hold a master's degree. Therefore, you are more likely to encounter them using the title "OT" rather than "Dr." in a professional setting.