Tex. Occ. Code § 155.001 : OCCUPATIONS CODE — HEALTH PROFESSIONS — PHYSICIANS — LICENSE TO PRACTICE MEDICINE — LICENSE REQUIREMENTS — License Required TEXT PDF A person may not practice medicine in this state unless the person holds a license issued under this subtitle. Tex. Occ. Code § 155.001 Acts 1999, 76th Leg., ch. 388, Sec. 1, eff. 9/1/1999.