1. A physician assistant with a certificate of controlled substance prescriptive authority as provided in this section may prescribe any controlled substance listed in Schedule III, IV, or V of section 195.017, and may have restricted authority in Schedule II, when delegated the authority to prescribe controlled substances in a collaborative practice arrangement. Such authority shall be listed on the collaborating physician form on file with the state board of healing arts. The collaborating physician shall maintain the right to limit a specific scheduled drug or scheduled drug category that the physician assistant is permitted to prescribe. Any limitations shall be listed on the collaborating physician form. Prescriptions for Schedule II medications prescribed by a physician assistant with authority to prescribe delegated in a collaborative practice arrangement are restricted to only those medications containing hydrocodone. Physician assistants shall not prescribe controlled substances for themselves or members of their families. Schedule III controlled substances and Schedule II – hydrocodone prescriptions shall be limited to a five-day supply without refill, except that buprenorphine may be prescribed for up to a thirty-day supply without refill for patients receiving medication-assisted treatment for substance use disorders under the direction of the collaborating physician. Physician assistants who are authorized to prescribe controlled substances under this section shall register with the federal Drug Enforcement Administration and the state bureau of narcotics and dangerous drugs, and shall include the Drug Enforcement Administration registration number on prescriptions for controlled substances.

2. The collaborating physician shall be responsible to determine and document the completion of at least one hundred twenty hours in a four-month period by the physician assistant during which the physician assistant shall practice with the collaborating physician on-site prior to prescribing controlled substances when the collaborating physician is not on-site. Such limitation shall not apply to physician assistants of population-based public health services as defined in 20 CSR 2150-5.100 as of April 30, 2009.

3. A physician assistant shall receive a certificate of controlled substance prescriptive authority from the board of healing arts upon verification of the completion of the following educational requirements:

(1) Successful completion of an advanced pharmacology course that includes clinical training in the prescription of drugs, medicines, and therapeutic devices. A course or courses with advanced pharmacological content in a physician assistant program accredited by the Accreditation Review Commission on Education for the Physician Assistant (ARC-PA) or its predecessor agency shall satisfy such requirement;

(2) Completion of a minimum of three hundred clock hours of clinical training by the collaborating physician in the prescription of drugs, medicines, and therapeutic devices;

(3) Completion of a minimum of one year of supervised clinical practice or supervised clinical rotations. One year of clinical rotations in a program accredited by the Accreditation Review Commission on Education for the Physician Assistant (ARC-PA) or its predecessor agency, which includes pharmacotherapeutics as a component of its clinical training, shall satisfy such requirement. Proof of such training shall serve to document experience in the prescribing of drugs, medicines, and therapeutic devices;

(4) A physician assistant previously licensed in a jurisdiction where physician assistants are authorized to prescribe controlled substances may obtain a state bureau of narcotics and dangerous drugs registration if a collaborating physician can attest that the physician assistant has met the requirements of subdivisions (1) to (3) of this subsection and provides documentation of existing federal Drug Enforcement Agency registration.