(1) Beginning January 1, 2027, a person who engages in the practice of peer support services and who bills a health carrier or medical assistance or whose employer bills a health carrier or medical assistance for those services must hold an active credential as a certified peer specialist or certified peer specialist trainee under chapter 18.420 RCW.

(2) A person who is registered as an agency affiliated counselor under chapter 18.19 RCW who engages in the practice of peer support services and whose agency, as defined in RCW 18.19.020, bills medical assistance for those services must hold a certificate as a certified peer specialist or certified peer specialist trainee under chapter 18.420 RCW no later than January 1, 2027.