(e) A physician assistant or certified registered nurse practitioner may perform functions of a narcotic treatment physician in a narcotic treatment program if authorized by Federal, State and local laws and regulations, and if these functions are delegated to the physician assistant or certified registered nurse practitioner by the medical director, and records are properly countersigned by the medical director or a narcotic treatment physician. One-third of all required narcotic treatment physician time shall be provided by a narcotic treatment physician. Time provided by a physician assistant or certified registered nurse practitioner may not exceed two-thirds of the required narcotic treatment physician time.
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