Since it sounds like you have good insurance, you may be able to self-refer. Do some google searching for a psychologist who specializes in ADHD and call them and ask if they take your insurance. If they do, make your own appointment.
If that doesn’t work, call your insurance company’s customer service number and ask for and ADHD therapist who is in-network for you. You can also ask them for an in-network psychiatrist.
And executive function coaches (a third professional) are often not covered by insurance at all, so just Google for one that sounds good for you and try them out. Some specialize in helping college students, which might be a good place to start.