Adult diagnosis

Clinical psychologist evaluation, neuropsychiatrist waitlist or private psychiatrist waitlist here because public Psychiatric Services won't treat / prescribe medications here *simulant medications

Psychiatrist is best option, look for someone that specialises in adhd for adults if you can get in with them because they will be able to give an accurate diagnosis and help you the best

You can always schedule with a neuropsychologist, but they tend to ask for a referral. I don't know exactly where you're from, but where I am most doctors refer to neuropsych for assessments due to "med seeking" behavior. Kinda ridiculous. I work in mental health and as soon as someone says "I think I have ADHD," let me tell you people love going through their records to find one little word that suggests past substance use to discredit individuals.

l lived in a city with a big university hospital who have a neuro/psych division which offers adult ADHD diagnostic. Had to wait several months for the process to start. In my case it was more than some questionnaires. It consisted of three separate appointments and a lot of different questionnaires I had to give them beforehand. I had to do practical tests (reaction time etc) and in depth discussions about my past and present experiences with ADHD in my life. It ended with a very good final appointment where they explained what my options are (therapy, meds, etc.), what kind of doctors to look up and what kind of therapy to get. Also they gave me a written letter with all the details from our conversations and their conclusions leading to the diagnosis.