Am I liable for these medical fees?

Last year I went to a podiatrist because of severe pain near my heel. After having an x-ray he found that I had a tendon that was tearing from the bone and gave me a steroid injection as well as some kind of vibrating thing he put on my foot after the injection. Also a splint. I went in a week later and he asked if I still had any pain and I told him that I still had a little. Another injection with the stimulation. I then receive a bill from my doctors office for the amounts that my insurance did not pay, totaling over $500!! Had I known the insurance was not going to cover I would have lived with the pain!! I know that I should have been more familiar with my insurance and what they pay, but am I wrong to feel that the Dr.s office is also partly to blame for not informing me? Surely they’re more familiar with insurances companies than most of the patients…right?!?