Dr. Roy Geronemus vs. Dr. Milton Waner

Hi! I'm new to this forum. I was just wondering if anyone can help me with information.

My daughter is almost 2 1/2 years old. She has a pws on
her left forhead which extends to the middle of her head, down below her eye and on her entire nose. She has been receiving treatment since she was 2 months old. I was told and from the research that did "the earlier the better" I believe she uses the v-beam laser. She already had 12 treatments. It definitely became lighter however, since her last treatment I think it darkened.

I use Dr. Roy Geronemus. I recently heard about Dr Milton Waner and am trying to do some research see the difference between them.
Is there anyone that can help with with this information. I would greatly appreciate it. ( My overly concerned grandmother is busy telling me to go for a second opinion to Dr. Waner)

Thank You.