(1) MSS providers must use qualified professionals, as specified in this section.

(a) Behavioral health specialists who are currently credentialed, certified, or licensed in Washington by the department of health under chapters 246-809, 246-810, 246-811, and 246-924 WAC as one of the following:

(i) Licensed mental health counselor.

(ii) Licensed independent clinical social worker.

(iii) Licensed social worker.

(iv) Licensed marriage and family therapist.

(v) Licensed psychologist.

(vi) Associate mental health counselor.

(vii) Associate independent clinical social worker.

(viii) Associate social worker.

(ix) Associate marriage and family therapist.

(x) Certified counselor.

(xi) Certified substance use disorder professional.

(b) Certified dietitians who are currently registered with the commission on dietetic registration and certified by the Washington state department of health under chapter 246-822 WAC.

(c) Community health nurses who are currently licensed as registered nurses in the state of Washington by the department of health under chapter 246-840 WAC.

(d) Community health workers (CHWs) who have a high school diploma or the equivalent and:

(i) Have a minimum of one year of health care and/or social services experience.

(ii) Carry out all activities under the direction and supervision of a professional member or supervisor of the MSS interdisciplinary team.

(iii) Complete a training plan developed by their provider.

(2) The provider's qualified staff must participate in an MSS interdisciplinary team consisting of at least a community health nurse, a certified registered dietitian, a behavioral health specialist, and, at the discretion of the provider, a community health worker.

(a) The interdisciplinary team must work together to address risk factors identified in a client's care plan.

(b) Each qualified staff member acting within her/his area of expertise must address the variety of client needs identified during the maternity cycle.

(c) An MSS interdisciplinary team case conference is required at least once prenatally for clients who are entering MSS during pregnancy, and are eligible for the maximum level of service. Using clinical judgment and the client's risk factors, the provider may decide which interdisciplinary team members to include in case conferencing.

(3) All Indian health programs, tribes, and any MSS provider within a county with fewer than fifty-five medicaid births per year are required to have at least one MSS interdisciplinary team member, as described in subsection (1) of this section:

(a) A behavioral health specialist;

(b) A registered dietitian; or

(c) A community health nurse.