"Gender identity", shall have the same meaning as under clause Fifty-ninth of section 7 of chapter 4.
"Health care provider", a health care professional licensed under this chapter including, but not limited to, a physician, psychologist, social worker, nurse or allied mental health and human services professional, including marriage and family therapist, rehabilitation counselor, mental health counselor or educational psychologist.
"Sexual orientation", having an orientation for or being identified as having an orientation for heterosexuality, bisexuality or homosexuality.
"Sexual orientation and gender identity change efforts", any practice by a health care provider that attempts or purports to impose change of an individual's sexual orientation or gender identity including, but not limited to, efforts to change behaviors or gender expressions or to eliminate or reduce sexual or romantic attractions or feelings toward individuals of the same sex; provided, however, that "sexual orientation and gender identity change efforts" shall not include practices that:
Mass. Gen. Laws ch. 112, § 275