Okla. Admin. Code § 310:657-1-2
The following words and terms, when used in this Chapter, shall have the following meaning, unless the context clearly indicates otherwise:
"Act" means the Workers' Compensation Act, Title 85 of the Oklahoma Statutes.
"Commissioner" means the Commissioner of Health.
"Department" means the Oklahoma State Department of Health.
"Facility" means a licensed, certified or accredited institution or health care setting which renders prescribed medical or health care service.
"Health professional" means an individual who is licensed or otherwise authorized under applicable laws, rules or standards to deliver medical or health services.
"Insurer" means a self-insured employer, a group self-insurance association plan, or an employer's workers' compensation insurance carrier.
"Peer" means a health professional who holds a non-restricted license in Oklahoma or another state and practices a similar specialty as typically manages the service under review.
"Person" means an individual, partnership, association, corporation, or other public or private legal entity including an agency.
"Plan" means a workplace medical plan.
"Provider" means any health professional, facility or other entity licensed or otherwise authorized under applicable laws, rules or standards to furnish medical or health service.
Okla. Admin. Code § 310:657-1-2