This section applies to: insurers and nonprofit health service plans that provide hospital, medical, or surgical benefits to individuals or groups on an expense-incurred basis under health insurance policies that are issued or delivered in the State; and health maintenance organizations that provide hospital, medical, or surgical benefits to individuals or groups under contracts that are issued or delivered in the State. An entity subject to this section: shall classify an obstetrician/gynecologist as a primary care provider; or if the obstetrician/gynecologist chooses not to be a primary care provider, shall allow a woman to receive routine gynecological care from an in-network obstetrician/gynecologist without requiring the woman to visit a primary care provider first, if: the care is medically necessary, including care that is routine; after each visit for gynecological care, the obstetrician/gynecologist communicates with the woman’s primary care provider about any diagnosis or treatment rendered; and the obstetrician/gynecologist confers with the primary care provider before performing any diagnostic procedure that is not routine gynecological care rendered during an annual visit. If an entity subject to this section classifies an obstetrician/gynecologist as a primary care provider as provided in subsection (b) of this section, and a woman does not choose an obstetrician/gynecologist as the woman’s primary care provider, the entity shall allow the woman an annual visit to an in-network obstetrician/gynecologist for routine gynecological care without requiring the woman to visit the woman’s primary care provider first, whether or not the primary care provider is qualified to and regularly does provide routine gynecological care. An entity subject to this section shall allow a woman to receive medically necessary, routine obstetric and gynecological care from an in-network, certified nurse midwife or any other in-network provider authorized under the Health Occupations Article to provide obstetric and gynecological services without first requiring the woman to visit a primary care provider. A certified nurse midwife or other nonphysician provider authorized under the Health Occupations Article to provide obstetric and gynecological services shall consult with an obstetrician/gynecologist with whom the certified nurse midwife or other provider has a collaborative agreement, in accordance with the collaborative agreement, regarding any care rendered under this subsection.