34 Pa. Code § 127.660 – Availability of reviewers.

(a) A URO or PRO shall have available to it, by contractual arrangement or otherwise, the services of a sufficient number and specialty distribution of qualified physicians and other practitioner reviewers to ensure the organization can perform reviews as required by the act and this subchapter.
(b) A URO or PRO shall report changes in its list of reviewers to the Bureau within 30 days of the change.

This section cited in 34 Pa. Code § 127.401 (relating to purpose/review of medical treatment).