California Code, Revenue and Taxation Code - RTC § 7057

(a) The board may disclose to state governmental licensing entities identifying information of persons appearing on the list of the 500 largest tax delinquencies pursuant to Section 7063 for purposes of administering Section 494.5 of the Business and Professions Code. “Identifying information” means the name, social security number or taxpayer identification number, and the last known address of the persons appearing on the list of the 500 largest tax delinquencies.

(b) Neither the state governmental licensing entity, nor any officer, employee, or agent, or former officer, employee, or agent of a state governmental licensing entity, may disclose or use any information obtained from the board pursuant to this section, except to administer Section 494.5 of the Business and Professions Code or to inform the public of the denial, refusal to renew, or suspension of a license or the issuance of a temporary license pursuant to Section 494.5 of the Business and Professions Code.

(c) For purposes of this section, state governmental licensing entity means a state governmental licensing entity as defined in Section 494.5 of the Business and Professions Code.