@ibstubro My suggestion, and I am not a doctor, is call the derm, see if they are going to charge per wart. I really don’t know how that is charged. If you are just charged a flat fee to come in and get treated think about it, because they will zap them all at once. You might need one follow up treatment, but I never have. I never had plantars warts, but I have had two warts removed at separate times at the doctor. I would warn your don’t let them use that extra topical stuff that can be put on after they freeze it if they freeze it. The first time I had a wart removed they just froze it and it heeled perfectly never to show up again. The second one, years later totally different part of my body, the doctor added this stuff after freezing it that I feel was unnecessary and it burned the neighboring skin. I thought they were putting some sort of antibiotic ointment, I’m still annoyed about it. Although, maybe if yours is a tough case that sort of ointment will help? As I said I am not a doctor, just sharing my experience.
Once you get rid of the warts you need to take precautions not to reinfect. Make sure to only get into a dry shower while you are going through your treatment, even in your own house. I would clean it well with bleach every few days while going through your treatment. Also consider using shower shoes for a few weeks even in your own shower. You don’t want to reinfect your own shower. Shoes that you wear without socks you might want to consider throwing them out or doing something to disinfect them. I don’t know how to disenfect them, but maybe there is some sort of spray? Don’t forget slippers are the same deal. If you use slippers consider getting ones you can throw in the washing machine.