Changing doctors

Lorena • Momma to 3 beautiful babies!🤍🤍🤍
I took my son to his 1 week appointment last week they told me to be back this Thursday for his 2 weeks checkup but I didn't like the doctor. She accidentally pocked his eye, she was falling over, She rolled her eyes when I asked her for a prescription for formula for wic and the staff was rude. After many days of finally doing research I found a good doctor that is closer to us and some friends go there too. When I got out of the hospital they told me I didn't need to apply for chip for him since he would be under my case how would I change his doctor? Can I just go to the new one or do I need to call Medicaid and let them know first?