In the MGMC (intervention) group, pregnant women will participate in group prenatal care and have ~2-hour visits with the same two co-facilitators, a Black midwife and a Black care coordinator, along with 8-12 other Black women at a similar stage of pregnancy, for all prenatal and one postnatal care visits.

The care coordinator will proactively engage with women throughout pregnancy and up to 12 months postpartum. The care coordinator helps women make appointments, sends reminders, and follows-up to ensure care was received, understood, and was appropriate. In the 3rd trimester, women in MGMC will be introduced to a community-based postpartum doula. The doula will make home visits once before birth and within the first 2 weeks postpartum; they will have approximately 50 contact hours available for 12 months postpartum for primarily in-person support, but they will be available by phone and text.

In the usual care (comparator) group, pregnant women attend individually scheduled visits with a midwife or obstetrician for a physical assessment and counseling. Although this can vary by provider, continuity of care is rare and racial concordance is not a consideration. Referrals for medical or social services are given to the patient to complete in both prenatal and postnatal care.

Racially concordant maternity care Group prenatal care Racially concordant nursing care coordination Postpartum doula support

Appropriate number (yes/no) and timing of prenatal visits (yes/no) documented in electronic medical records

Five tests completed during prenatal period (yes/no), documented in electronic medical record

Appropriate number (yes/no) and timing of postnatal visits (yes/no) documented in electronic medical record

Patient Activation Measure (PAM), 13-item scale, range 0-100, Likert disagree strongly to agree strongly and not applicable. Assesses degree to which individuals take an active role in managing health and health care. Higher scores are more likely to understand that their active involvement is critical to their state of health and considered more ''in charge.'' The PAM has strong psychometric properties and is predictive of a wide range of health-related behaviors. Hibbard et al. report that a 4-point difference in PAM scores can be viewed as clinically significant.

Referrals to higher acuity medical or obstetric care

Referrals to higher acuity mental health or social services