FYI, you'll need the following to get a medical card in Colorado. Beyond that, you'll obviously need a doctor to say you need it.

All Documents must be currently valid!
At least one of these documents must show the applicant’s date of birth.

At least 1 of the following
Colorado Driver’s License
Colorado ID
Temporary Colorado Driver’s License
Temporary Colorado ID

Or at least 2 of the following

Minimum of 1 from the group of ID’s below -
Out of State Driver’s License
Out of State ID
Passport, Military ID, Tribal ID

And a Minimum of 1 from the group below -
Work Identification/paycheck stub/W-2
Utility bill, medical/insurance bill or cable bill
The above items must show a Colorado residence