Help with Mounting Medical Bills

Despite having good health insurance for the first time in many years, my stack of medical bills keeps growing every day. Due to having complex medical problems secondary to mitochondrial disease which has lead to Common Variable Immunodeficiency (CVID), gastroparesis, small intestinal and colon dysmotility, and dystonia I see doctors on a frequent basis. I get IV infusions monthly and receive all my nutrition through a feeding tube. These medical interventions end up costing me a lot out of pocket between co-pays for appointments, ER visits, medications, and medical supplies. While I have a great job now, medical bills from when I was a veterinary student built up and I am trying to pay them off along with my current bills. Any help would be appreciated.