Cal. Bus. & Prof. Code § 2076

(a) Notwithstanding any other provision of law, a physician and surgeon who is licensed to practice medicine in another state or country shall be exempt from licensure requirements under this act while practicing medicine in this state if all of the following conditions are met:
1. (1) The physician and surgeon has an oral or written agreement with a sports team to provide general or emergency medical care to the team members, coaching staff, and families traveling with the team for a specific sporting event to take place in this state.
2. (2) Except as provided in Section 2058 or 2060, the physician and surgeon may not provide care or consultation to any person residing in this state, other than a person described in paragraph (1).
(b) The exemption shall remain in force while the physician and surgeon is traveling with the team, but shall be no longer than 10 days per individual sporting event.
(c) The executive director may grant a physician and surgeon additional time for exemption, up to 20 additional days per sporting event, upon prior request by the physician and surgeon. The total number of days a physician may be exempt, including additional time granted upon request, may not exceed 30 days per sporting event.
(d) A physician and surgeon who is exempt from licensure requirements under this section is not authorized to practice medicine at a health care clinic or facility, including an acute care facility.