Maternal Fetal Medicine

Meet Our Perinatology & Maternal-Fetal Specialists

Johns Hopkins All Children’s Maternal-Fetal Medicine Specialists work with your OB-GYN to manage high-risk pregnancies with the health of the expectant mother and fetus in mind.

Meet our highly-skilled team of perinatologists

Katherine Apostolakis-Kyrus, M.D. Perinatology

Dr. Apostolakis-Kyrus specializes in maternal-fetal medicine in the Johns Hopkins All Children's Maternal, Fetal & Neonatal Institute. She earned her medical degree at Eastern Virginia Medical School and completed her Obstetrics and Gynecology Residency at Bayfront Health in St. Petersburg, Florida. She completed a fellowship in Maternal and Fetal Medicine at University of Tennessee Health Science Center.
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Mayra Cruz Ithier, M.D. Perinatology

Dr. Cruz Ithier is a maternal-fetal medicine specialist in the Johns Hopkins All Children’s Hospital Maternal, Fetal & Neonatal Institute. She joined the hospital staff in 2018. Dr. Cruz Ithier earned her medical degree from the University of Illinois in Chicago. She completed her obstetrics and gynecology residency at Bayfront Health in St. Petersburg where she served as education chief during her senior year. While at Bayfront she received the Research Award, Excellence in Obstetrics Award and the Resident Teacher Award.
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Jose Prieto, M.D. Perinatology

Dr. Prieto is medical director of maternal-fetal medicine in the Johns Hopkins All Children’s Maternal, Fetal & Neonatal Institute. He specializes in the care of the mother and fetus in high-risk pregnancies.  Dr. Prieto is a graduate of the University of Miami School of Medicine, where he also received a Master's in Public Health. He completed his residency in obstetrics, gynecology and reproductive sciences at the University of Texas Health Science Center/Houston at L.B.J. General Hospital, where he was named Outstanding Chief Resident, followed by a fellowship in maternal fetal medicine at the University of Pittsburgh and Magee-Women's Hospital. He joined Maternal Fetal Medicine Associates in 1996. Dr. Prieto is the Clinical Practice Director for All Children's Perinatology Specialists. 
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Karen Raimer, M.D. Perinatology

Dr. Raimer is a key member of our maternal-fetal medicine team, providing care for many expectant mothers whose infants may require care in our NICU or CVICU as well as surgery after delivery. She joined All Children’s Perinatology Specialists in 1991 after completing her fellowship at University of Miami. Dr. Raimer is a graduate of the Louisiana State University School of Medicine, New Orleans. She completed a residency in obstetrics/gynecology at the Ochsner Foundation Hospital in New Orleans, where she served as chief resident. Following a fellowship in perinatology at the University of Miami, in 1991 Dr. Raimer joined Maternal Fetal Medicine Associates in St. Petersburg, FL and is the Regional Perinatal Intensive Care Center director for Maternal Fetal Medicine at Bayfront Medical Center. Dr. Raimer serves as an examiner for the American Board of Obstetrics & Gynecology.
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Rachelle Schwartz, D.O. Perinatology

Rachelle Schwartz, D.O., joined All Children's Perinatology Specialists in July 2012 after completing a fellowship in maternal fetal medicine at St. Luke's-Roosevelt Hospital, Columbia University, College of Physicians and Surgeons in New York. Dr. Schwartz is a graduate of Touro University College of Osteopathic Medicine and completed her residency in obstetrics and gynecology at Bayfront Medical Center, where she served as chief academic resident. While at Bayfront she received the Laparoscopic Surgeon of the Year Award, Resident Academic Achievement Award and Academic Excellence Award.
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Tiffany Tonismae, M.D. Obstetrics / Gynecology

Dr. Tonismae specializes in Maternal-Fetal Medicine in the Johns Hopkins All Children’s Maternal, Fetal & Neonatal Institute and sees patients at the Johns Hopkins All Children's Outpatient Care, Brandon and Brandon Regional Hospital. She joined the hospital staff in 2019. Dr. Tonismae earned her medical degree from the University of South Carolina School of Medicine in Columbia, South Carolina. She completed her residency in obstetrics and gynecology from Virginia Tech-Carilion School of Medicine in Roanoke, Virginia, followed by a Maternal-Fetal Medicine fellowship from Indiana University School of Medicine in Indianapolis, Indiana.
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