Get a Kit
In addition to the basics, your kit needs to have a list of your current medications, along with dosages, times you take each medication, and the name and contact information for the prescribing doctor. You should have a 3 day emergency supply of each medication in your kit - immediately after a disaster, pharmacies may not be open, and your doctor's office likely will not be open to call in a prescription to a different pharmacy, especially if you have to evacuate the area.
Also make sure to keep extra supplies, such as batteries, spare parts and cleaning supplies for any assistive devices you use. Assistive devices should be clearly labeled with your name and cell phone number.
For more information, check out the Red Cross, Ready.gov, or the Center for Disease Prevention and Control.