Md. Code, Insurance § 15–1611.1

(a) This section applies only to a pharmacy benefits manager that provides pharmacy benefits management services on behalf of a carrier.

(b) Except as provided in subsection (c) of this section, a pharmacy benefits manager may not require that a beneficiary use a specific pharmacy or entity to fill a prescription if:

(1) the pharmacy benefits manager or a corporate affiliate of the pharmacy benefits manager has an ownership interest in the pharmacy or entity; or

(2) the pharmacy or entity has an ownership interest in the pharmacy benefits manager or a corporate affiliate of the pharmacy benefits manager.

(c) Except as provided in § 15–847.2 of this title, a pharmacy benefits manager may require a beneficiary to use a specific pharmacy or entity for a specialty drug as defined in § 15–847 of this title.