Cal. Bus. & Prof. Code § 23428.21
For the purposes of this article, "club" also means any local dental society having an authorized delegate to the California Dental Association and composed entirely of dentists duly admitted, licensed and qualified to practice dentistry within the state, which has at least 250 members and has been in existence for a period of more than 20 years and which owns, leases, operates or maintains a club room or rooms for its members, and has operated the club room or rooms for a period of not less than three years.
No license shall be issued pursuant to this section to any club which restricts membership or in any other way discriminates against any person in the use of any of its facilities, on the basis of race, religion, national origin, sex, or age.
Ca. Bus. and Prof'l. Code § 23428.21