Board Certified in Obstetrics & Maternal Fetal Medicine
Maternal Fetal Group, L.L.C.

ABOUT OUR PHYSICIANS

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Salvatore J. Lombardi, M.D.Salvatore J. Lombardi, M.D., founding partner of our group, received his fellowship training in maternal fetal medicine at Vanderbilt University Medical Center, where he was co-founder of the CVS program and was the first physician to perform chorionic villus sampling, both transcervical and transabdominal.  He remained on the full-time academic faculty until 1992, during which time he received numerous awards to include the prestigious American College of Obstetricians and Gynecologists, Purdue Frederick Award for Excellence in Medical Research.  Dr. Lombardi was one of the innovators in the field of obstetric Doppler velocimetry, presenting his work both nationally and internationally.  He is published in the fields of both ultrasound and genetics. He received the Outstanding Community Hospital Research Award for his work in the area of genetics at the 1994 meeting of the Society of Perinatal Obstetricians.

Dr. Lombardi's academic and administrative appointments include Assistant Professor, Department of Obstetrics and Gynecology, Division of Maternal Fetal Medicine, Vanderbilt University Medical Center; founder and director of the Division of Maternal Fetal Medicine, Baptist Hospital, Nashville, TN; Director, Vanderbilt University OBGYN residency at Baptist Hospital; Director of Ultrasound, Division of Maternal Fetal Medicine, Baptist Hospital; Director of Obstetrics, Metropolitan Nashville General Hospital, Nashville, TN; Assistant Professor, Meharry Medical College, Nashville, TN; and Clinical Director, Maternal Infant-Childcare Program, Nashville, TN.  His areas of special interest and expertise include chorionic villus sampling, fetal anomalies, Doppler velocimetry and prenatal genetic diagnoses.

Dr. Lombardi graduated from the University of Nuevo Leon, Monterrey, Mexico.  He received his fellowship training at Vanderbilt University and completed his residency at State University of New York, Buffalo, NY.  Dr. Lombardi is board-certified in Obstetrics and Gynecology as well as Maternal Fetal Medicine.


Stephen J. Fortunato, M.D.Stephen J. Fortunato, M.D., is a Senior Partner of Maternal Fetal Group.  His maternal fetal fellowship training was at Parkland Hospital in Dallas.  He held faculty positions at East Tennessee State University; and Wright State University School of Medicine where he was Vice Chairman, Director of OBICU.  He came to our group from Tulane University School of Medicine where he was Section Chief of Maternal Fetal Medicine, Director of OBICU and Director of Maternity Service for the Tulane Medical Center.

Dr. Fortunato has been published and won international acclaim for his work on placental transport, premature rupture of the membranes and the molecular basis of prematurity.  His research has won national and international awards from ACOG, the Society of Perinatal Obstetricians, the Society of Gynecologic Investigation, the Society of the Fetus as a Patient and the Central Association of Obstetricians & Gynecologists.  He serves as Medical Director of the Perinatal Risk Management Program for HCA.  Additionally, he serves as Chairman of the Board and CEO of Proterm, a newly formed pharmaceutical company.  He is Director of Maternal Fetal Medicine at the Women's Hospital at Centennial Medical Center.

Dr. Fortunato is a reviewer for Obstetrics and Gynecology, American Journal of OBGYN and sits on study sections for the National Institute of Health and the New Zealand Health Research Council.  His clinical interests include echocardiography, medical complications of pregnancy, invasive fetal procedures and prematurity.

Dr. Fortunato graduated from University of Cincinnati.  He received his fellowship training at University of Texas Southwestern and completed his residency at the University of New Mexico.  Dr. Fortunato is board-certified in Obstetrics and Gynecology, as well as Maternal Fetal Medicine.


Tiffanee Lenzi, M.D., Ph. DTiffanee Lenzi, M.D., Ph. D joined the Maternal Fetal Group/Pediatrix in December, 2008. Dr. Lenzi completed her fellowship in Maternal Fetal Medicine at the University of Michigan in 2005, followed by a residency in Medical Genetics, Department of Pediatrics. She received her medical degree from the Wayne State University School of Medicine in Detroit and completed her residency program at Stanford University Medical Center in Stanford, California. 

Dr. Lenzi served as Assistant Professor of Obstetrics and Gynecology at Vanderbilt University in Nashville. She is certified in Clinical Genetics, through the American Board of Medical Genetics. Dr. Lenzi has received numerous awards throughout her training among which is the award for Excellence in Patient Care.

Dr. Lenzi currently holds memberships in the American Medical Association, American College of Obstetrics & Gynecology, Society for Maternal Fetal Medicine, and the American Institute of Ultrasound in Medicine (AIUM).



Guoyang Luo, MD, PhDGuoyang Luo, M.D., Ph. D received his maternal-fetal medicine fellowship training at the Yale University School of Medicine in New Haven, Connecticut.  He completed his residency in obstetrics and gynecology at New York-Presbyterian Hospital/Weill-Cornell Medical College.  Dr. Luo received a doctorate in microbiology and immunity from Baylor College of Medicine in Houston, Texas, and a master’s degree in molecular immunology from Peking Union Medical College in Beijing, China.  He earned his medical degree from Hunan Medical University in Hunan, China.

Dr. Luo’s work is widely published in a variety of medical journals, including Reviews in Obstetrics and Gynecology, Reproductive Sciences, American Journal of Obstetrics & Gynecology, and Journal of Perinatal Medicine.

His research topics include contemporary management of post-term pregnancy, prenatal diagnosis and risks associated with in vitro pregnancies with early spontaneous reduction.

Dr. Luo is a member of numerous professional organizations, including the American College of Obstetrics and Gynecology, American Institute of Ultrasound in Medicine, and Society of Maternal-Fetal Medicine.  Additionally, Dr. Luo is an Adjunct Assistant Professor at Yale University, New Haven, Connecticut.

Kathleen A Mayor-Lynn, M.D.

Kathleen A. Mayor-Lynn, M.D. received her maternal-fetal medicine fellowship training at the University of Florida (UF) College of Medicine in Gainesville, and was awarded the Golden Apple for Excellence in Medical Education by the Department of Obstetrics and Gynecology.  She also received a master’s degree in clinical investigation from UF.  Dr. Mayor-Lynn completed her residency in obstetrics and gynecology at Jackson Memorial Hospital in Miami, Florida and was honored with Mary J. O’Sullivan Award for excellence in obstetrics.  She received her medical degree from the University Of Miami Miller School Of Medicine and is Board Certified in Obstetrics & Gynecology with the American Board of Obstetrics and Gynecology.

Published several times in the American Journal of Obstetrics & Gynecology, Dr Mayor-Lynn’s research topics include neonatal GBS Sepsis and significance of accidental extensions in the lower uterine segment during cesarean delivery.

She is an experienced lecturer at conferences hosted by the World Congress on Ultrasound in Obstetrics and Gynecology, Society for Maternal-Fetal Medicine, and William A. Little Obstetrical and Gynecological Alumni Society.

Dr. Mayor-Lynn is a member of numerous professional organizations, including the American College of Obstetrics and Gynecology, American Institute of Ultrasound in Medicine, and Society of Maternal-Fetal Medicine.

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