The AME has form 8500-8. You can pull up copies online. First time might be a pain but normally it takes longer to fill in the address block than the 20 yes/no question medical history. They'll want you to list whatever drugs you currently taking and and all your visits to medical professionals and why.

The FAA has an online version MedXpress, you fill out the info on your time and and the AME's office pulls it up when you show. Some AMEs will only do MedXpress because the FAA is starting to require the data be submitted to OKC online and they're outsourcing the receptionist's job to you.