In 1999, Article 4495b was repealed and recodified in chapter 151 of the Texas Occupation Code. Section 151.002(13) of the Texas Occupations Code now defines "practicing medicine" as follows: "Practicing medicine" means the diagnosis, treatment, or offer to treat a mental or physical disease or disorder or a physical deformity or injury by any system or method, or the attempt to effect cures of those conditions, by a person who: (A) publicly professes to be a physician or surgeon; or (B) directly or indirectly charges money or other compensation for those services. TEX. OCC. CODE ANN. 151.002(a)(13) (Vernon Supp. 2000). "Physician" is defined under that title as "a person licensed to practice medicine in this state." Id. 151.002(a)(12). The Texas State Board of Medical Examiners is the agency of the executive branch of state government invested with the power to regulate "the practice of medicine." Id. 152.001.