Change in duties at interview

Hello fellow nurses,

I just interviewed for a position at a health clinic. The job was stated as being a referral case manager with behavioral health experience and supervision of staff. At the interview, I was told I will "Lead by example". I will not only be responsible for my job, but also ordering supplies, drugs, taking triage and screening phone calls, drawing blood and cathing peds pts, drawing blood on adults, covering any missing staff duties, giving immunizations to peds, phoning in prescriptions, doing med rec's , the list was exhaustive and I cant even begin to put down all the other duties I am responsible for. I am to be an intensive case manager for not only psych clients, but now medical and pediatric as well, plus throw in a small amt of OB/gyne. I was told that I am a salary employee and that my door has to always be open. I cant imagine how I will even have the time to do the job I was hired for and I pointed out I have no peds experience. I was floored. AmI overreacting? Is this normal ??