Yes, a Doctor of Physical Therapy (DPT) is called a Doctor.
Explanation
The Doctor of Physical Therapy (DPT) is a professional doctoral degree in physical therapy. Graduates of DPT programs are qualified to use the "Doctor" prefix. As stated by fihs.edu.pk regarding their DPT program, graduates "will be called 'physiotherapist' and will use 'Doctor' as Prefix and 'physiotherapist' as Suffix in their names." Therefore, someone holding a DPT degree is addressed as "Doctor."
