Okla. Stat. tit. 59, § 59-887.3: License requirements

No person shall designate himself as a physical therapist or

physical therapist assistant, nor practice, nor hold himself out to

the public as being able to practice physical therapy in this state,

unless licensed in accordance with the provisions of the Physical

Therapy Practice Act. The Physical Therapy Practice Act shall not

prohibit or prevent any person licensed in the healing arts in this

state from engaging in the practice for which he is duly licensed.