Looking for Guidance!

I'm wondering if there's any way to restrict a certain professionals access to my medical record within the hospital database? My ex's new gf works at the local hospital. I went to the ER recently and then she was messaging me asking about meds I was on and calling me a liar when I said I wasn't on them. I was on them but haven't been for years guessing it just does update because they had old insurance as well. Then she proceeded to insinuate that I was there for something completely different than I was. Which had she been the one treating me she'd of known this. I'm just tired of her viewing my medical record and making incorrect assumptions.