As a pharmacist in CA - the privacy issues are your biggest stumbling block.
The fastest way, as someone posted, is to go to an independent pharmacy. Be willing to do anything! Clean the windows, do deliveries, whatever.... Look in your phone book. Also - google your area for compounding pharmacies - these are always independent. There are also "closed door" pharmacies which serve nursing homes, etc....
Hospitals will require a background check, TB testing & orientation.
Chain/retail pharmacies will often have to go thru corporate offices & can be influenced by either agreements with pharmacy or tech schools or union rules. My retail facility does not allow any volunteers at all.
Don't forget to try your student health service pharmacy. That pharmacist is often tuned to student issues.
Again...be persistant & patient. If you can volunteer in an acute or snf facility, be willing to go anywhere - transporter, gift shop, lab, whatever. Then you can stop by & befriend a pharmacist or tech who then might get you in.
Good luck & be patient!