California Code, Business and Professions Code - BPC § 4325

(a) No person other than a physician, dentist, podiatrist, veterinarian, pharmacist, or other person authorized by law to dispense, administer, or prescribe controlled substances, or the person's agent acting under authorization by the person to print prescription blanks, and acting in the regular practice of the person's profession, shall knowingly and willfully manufacture, copy, reproduce, or possess, or cause to be manufactured, copied, reproduced, or possessed, any prescription blank that purports to bear the name, address, and federal registry or other identifying information of a physician, dentist, podiatrist, veterinarian, or other person authorized by law to dispense, administer, or prescribe controlled substances.

(b) Every person who violates this section shall be guilty of a misdemeanor.