An ADHD coach is not a therapistnor a health professional; they are simply people who have specialized in ADHD; some of them have taken life coaching courses and then ADHD coach training courses.
As you seek for one, it’s your job to corroborate how prepared this person is and if you can trust this person or not.
A coach with “a credential” won’t guarantee you this persons’ proficiency and/or expertise. There are coaches who train on their own to become “ADHD professionals” and simply start working as such.
Being the ADHD world in constant evolution, and one that is quite sensitive and also subject of a growing industry that surrounds it, I thought about a road map to help you decide if this a career path that you’ll enjoy and even how to start taking it.