(a) General rule.--An extraterritorial license empowers the licensee residing in or maintaining the office of practice in any adjoining state near the boundary line between such state and this Commonwealth, whose medical practice extends into this Commonwealth, to practice medicine and surgery with or without restriction in this Commonwealth on such patients.

(b) Requirements.--No extraterritorial license may be issued unless the applicant holds the equivalent of a license without restriction granted by a state adjoining this Commonwealth.

(c) Additional conditions.--An extraterritorial license may be granted by the board so long as the board is provided with:

The exercise of the discretion of the board in granting such a license will depend primarily upon the needs of patients in this Commonwealth, the availability of medical care in the specific area involved and whether the adjoining state of licensure reciprocates by extending similar privileges to medical doctors who reside and have their office of practice in this Commonwealth. Such a license will be automatically revoked if such medical doctor relocates the office of practice or residence. A medical doctor granted such a license has the duty to inform the board of any changes in practice which may in any way affect the maintenance of the license.