Looking for an affodable but GOOD psychiatrist in Studio City, CA

Hello, my boyfriend is 27 and is considering on going back on medication for his ADHD. He was on ritalin for about 8 years in his youth and completely stopped taking it junior year of High School. He is in a competitive career and feels like he needs to get back to on it to be able to move up into a management role. I am a little concerned about behavioral changes because we all know we fell in love with our ADHD partner because of their zest and spunk for life. Anyway, we are looking for a Psychiatrist specializing in ADHD who can really help identify what will be best for him.

Any advice will be greatly appreciated.