I don't think there is a list. You should start the process early and allow 5-6 weeks at least.
Then, if GMAC needs you to visit a specific doctor to get a second opinion, they will let you know about it, but usually not necessary.
Hi Rich
What do u mean when u say " visiting a Doctor who is approved by GMAC ". Does GMAC approves doctors? is there a list? how can we know?
EMPOWERgmatRichC
Hi ibritogu,
You can learn more about how to apply for Testing Accommodations because of your ADHD here:
GMAC has a specific process for determining who should receive those types of accommodations - and a recent diagnosis might work against you. Oftentimes, those GMATers who receive accommodations have a lengthy, documented history of their situation (with Doctors records, medical prescriptions, prior Exams in which they received accomodations, etc.). Without that type of background, you might not qualify for the accommodations that you are interested in. There's certainly no harm in applying though, although the process is lengthy and includes a number of expenses (including visiting a Doctor who is approved by GMAC).
GMAT assassins aren't born, they're made,
Rich