Cal. Bus. & Prof. Code § 661

(a) A physician and surgeon shall provide to each patient at the initial office visit a written or electronic notice of the Open Payments database. The written notice shall include a signature from the patient or a patient representative and the date of signature.
(b) The written or electronic notice shall contain the following text:
“The Open Payments database is a federal tool used to search payments made by drug and device companies to physicians and teaching hospitals. It can be found at https://openpaymentsdata.cms.gov.”
(c) A physician and surgeon shall include in the electronic records for the patient a record of the notice pursuant to this section.
(d) If a physician and surgeon does not maintain electronic records, the physician and surgeon shall include the notice pursuant to this section in the written records.
(e) A physician and surgeon shall give to the patient or patient representative a copy of the signed and dated notice.