Here is the list of qualifying medical conditions which make you eligible for the registry...
cancer, glaucoma, HIV/AIDS positive, cachexia; severe pain; severe nausea; seizures, including those that are characteristic of epilepsy; or persistent muscle spasms, including those that are characteristic of multiple sclerosis.
If you have any of those qualifying medical conditions then bring your medical records with you to your doctor for review and you shouldn't have any problems getting on the registry.
If you need a doctor THC Foundation has doctors on the premises.
Forms, rules and such are accessible here...
Medical Marijuana in Colorado
And, here is the link for information regarding THCF...
Colorado | The Hemp and Cannabis Foundation, THCF Medical Clinics, THC Foundation, Medical Marijuana Doctors, Medical Marijuana Referrals, Colorado Medical Marijuana Clinics, Colorado Medical Marijuana Permit, Denver, Durango, Glenwood Springs, Color
Good luck!
Take care,
WHAB