First time poster... long time lurker.
I am a nurse, so I thought I could provide some insight here. When my daughter (six year old) is sick, I still bring her to the pediatrician. Especially when they are that young, its important to see the MD for developmental assessments and such. CA wouldn't be providing that type of medical treatment.
As far as HIPPA, nobody but Casey could have those records released without a court order, and even then its tough. In order to see your own medical record, you have to provide a request in writing for a copy to be made for you. It isn't an instant thing.