Okla. Stat. tit. 59, § 491
Every person before practicing medicine and surgery or any of the branches or departments of such, within the meaning of this act, within the State of Oklahoma, must be in legal possession of the unrevoked license or certificate herein provided for, and any person so practicing in such manner within this state, who is not in such legal possession thereof, shall be guilty of a misdemeanor, and shall, upon conviction thereof, in any court having jurisdiction, be fined for the first offense in any sum not less than One Thousand Dollars ($1,000.00), and not more than Five Thousand Dollars ($5,000.00), and shall, for any succeeding offense, be subject to fine in like amount, and in addition thereto, shall be imprisoned in a county jail for a period of time not less than thirty (30) days, nor more than one hundred eighty (180) days; and in all instances, each day's practice shall constitute a separate and distinct offense. It is further provided, that any person who shall render such professional services without first complying with the provisions of this act, shall, in addition to the other penalties herein provided, receive no compensation for such services.
Laws 1923, SB 143, c. 59, § 11, emerg. eff. March 31, 1923; Amended by Laws 1994, HB 2123, c. 323, § 10, emerg. eff. July 1, 1994.