Oregon Revised Statutes Occupations and Professions § 677.172

(3)(a) Any person licensed under this chapter who changes location of practice to some other state or country shall be listed by the board as inactive. Absence from the state of a person licensed by the board does not affect the validity of the license if the licensee notifies the board of such absence from the state and pays the inactive registration fee during such absence.

(b) Before resuming practice in the state, the licensee shall notify the board of the intention to resume active practice in the state and obtain a certificate of active registration for the renewal period during which the licensee returns. The fee shall be the active registration fee less any inactive registration fee previously paid for that renewal period.

(c) The licensee shall file an affidavit with the board describing medically related activities during the period of inactive registration. If, in the judgment of the board, the conduct of the licensee has been, during the period of inactive registration, such that the licensee would have been denied a license if applying for an initial license, the board may deny active registration and may take further action as appropriate.