How to get rid of white chicken pox scars (depressed and hypopigmented)? (photo)

I have a single, white pigmented chicken pox scar, possibly from 20 years ago, on my forehead. I am a male patient. What should I do about this? I have read about microneedling/dermapen, LACA, punch elevation, or even excision/subcision but I am not sure. Also, what would the estimated cost be in my area (San Francisco)? Also, who would the best doctors be? Could a RN do this or only MD? In addition, how apparent would the scar from treatment be if I had excision/subcision done?