1. Short title This Act may be cited as the Mental Health Transparency Act . 2. Requiring disclosure of percentage of in-network participation for certain provider types (a) PHSA Part D of title XXVII of the Public Health Service Act ( 42 U.S.C. 300g–111 et seq. ) is amended by adding at the end the following new section: 2799A–11. Required disclosure of percentage of in-network participation for certain provider types (a) In general A group health plan and a health insurance issuer offering group or individual health insurance coverage shall, along with any summary of benefits and coverage provided under section 2715 (and in accordance with the timing and manner specified under such section and the implementing regulations of such section), and on the public website of such plan or issuer, make available the following information with respect to each type of provider specified in subsection (b): (1) The number and percentage of providers of such type located in the service area of such plan or coverage that have a contractual relationship (as defined by the Secretary) in effect with such plan or coverage for furnishing items and services under such plan or coverage, determined in accordance with information made available by the Secretary under subsection (d). (2) The designation established by the Secretary under subsection (c) corresponding to the percentage described in paragraph (1). (b) Specified providers For purposes of this section, the types of providers and facilities specified in this subsection are the following (as defined by the Secretary and broken down by subspecialty as specified by the Secretary): (1) Behavioral health care providers and facilities. (2) Substance use disorder treatment providers and facilities. (c) Establishment of designations of in-Network participation (1) In general Not later than 1 year after the date of the enactment of this section, the Secretary, in consultation with the Secretaries of Labor and of the Treasury, shall establish a system of designations (such as high ,