Hi johnsmunoz,
You can definitely configure Radius or LDAP mapping this guides should help you understand and configure this features:
LDAP mapping:
http://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/91831-mappingsvctovpn.html
Radius mapping:
http://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/117641-config-asa-00.html#anc6
Hope this info helps!!
Rate if helps you!!
-JP-