California Code, Health and Safety Code - HSC § 1367.28

Within six months after the department issues guidance pursuant to paragraph (1) of subdivision (e) of Section 1367.043, and no later than March 1, 2025, a full service health care service plan shall include information within or accessible from the plan's provider directory, and accessible through the plan's call center, that identifies which of a plan's in-network providers have affirmed that they offer and have provided gender-affirming services, including, but not limited to, feminizing mammoplasty, male chest reconstruction, mastectomy, gender-confirming facial surgery, hysterectomy, oophorectomy, penectomy, orchiectomy, feminizing genitoplasty, metoidioplasty, phalloplasty, scrotoplasty, voice masculinization or feminization, hormone therapy related to gender dysphoria or intersex conditions, gender-affirming gynecological care, or voice therapy related to gender dysphoria or intersex conditions. This information shall be updated when an in-network provider requests its inclusion or exclusion as a provider that offers and provides gender-affirming services. Nothing in this act alters any business establishment's obligation to provide full and equal services to customers or patients regardless of their sex and other protected characteristics, pursuant to the Unruh Civil Rights Act (Section 51 of the Civil Code) and other applicable law.