(a) The director of any facility shall be in charge of all services afforded to any person admitted or committed to such facility including all maintenance services, custody, and employment of such persons, and shall also be in charge of the diagnosis, treatment and care to be given such person by reason of mental or physical disability. If the director is not a physician, a physician shall be in charge of all medical diagnosis, treatment and care to be rendered such persons.

(b) The director of any facility, in his discretion, may allow any person admitted or committed to be treated or counseled by his family or personal psychiatrist, physician or other medical practitioner, psychologist, social worker or other person. If such personal treatment or counseling is allowed, the same shall be subject to the supervision of the physician bearing medical responsibility for the facility, if any. Where such physician is not necessary to the operation of the facility, such personal treatment or counseling shall be under the supervision of the director.

(c) The director of any facility may in his discretion by and with the advice of two physicians not employed by the facility, determine when elective surgery should be performed upon any mentally disabled person admitted or committed to such facility where such person does not have a living parent, spouse, issue, next of kin or legal guardian as fully and to the same effect as if said director had been appointed guardian and had applied to and received the approval of an appropriate court therefor.