Tammy S. Rouleau is an OB/GYN nurse practitioner in Chula Vista's Eastlake corridor, practicing at Sharp Rees-Stealy Otay Ranch on East Palomar Street near Otay Ranch Town Center. Prenatal care transitions into newborn well-child coordination through referral partnerships with pediatric groups across the Eastlake area, including Children's Primary Care Medical Group for immunization scheduling and developmental-milestone tracking in the months following delivery. The practice sits within the Sharp Rees-Stealy multi-specialty campus, where OB/GYN patients access on-site ultrasound imaging, laboratory draws, and same-building specialist consults without traveling between facilities. Prescription management for prenatal vitamins, contraceptives, and hormone therapies routes through the adjacent Sharp Rees-Stealy Otay Ranch Pharmacy on the same campus, reducing fill-time for time-sensitive medications. The OB/GYN suite occupies the third floor of the Otay Ranch medical building at 1400 East Palomar Street, providing full-spectrum gynecological and obstetric care — including cervical screening, IUD placement, and prenatal ultrasound — within the Sharp HealthCare network.