Okla. Admin. Code § 435:10-5-2
Any hospital or program appointing any person as a fellow, assistant resident, or resident physician or permitting anyone to practice medicine in such hospital or program without a license or special license to practice medicine in Oklahoma may be suspended from the Board's list of hospitals and programs approved for post-graduate training. It shall be the duty of the hospital and/or medical school appointing such fellow, assistant resident, or resident to ascertain that such appointees hold a license to practice in Oklahoma at the time they begin post-graduate training. The hospital or program must submit within 30 days after the commencement of said employment the name and licensure information to include license number on each fellow, assistant resident or resident physician.
Okla. Admin. Code § 435:10-5-2