Meet Our Expert Team of Physicians

At the Rose Center for Maternal-Fetal Health, you will have the confidence of knowing you are being treated by one of our highly experienced clinicians dedicated to helping guide you to the healthiest pregnancy possible. Our maternal-fetal medicine specialists (perinatologists) are specially trained in caring for mothers who are experiencing higher than normal risk for complications during pregnancy. 

Lynn Gregory Lindsay, MD

Medical Director, Rose Center for Maternal-Fetal Health

Dr. Lindsay received his bachelor's and master's degrees from Brigham Young University in Utah. He received his medical degree from St. Louis University in Missouri and completed his OB-GYN internship and residency, as well as his Maternal-Fetal Medicine fellowship training at the University of Colorado. Dr. Lindsay board certified in OB/GYN and Maternal-Fetal Medicine. Dr. Lindsay joined Obstetrix Medical Group of Colorado in 1995.

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Robert Stettler, MD

Medical Director, Colorado Obstetrix Group

Dr. Stettler was born and raised in Texas. He received his bachelor’s degree from the University of Texas and medical degree from the University of Texas Medical Branch in Galveston. He completed his OB-GYN internship and residency at John Peter Smith Hospital in Fort Worth and his Maternal-Fetal Medicine fellowship training at The University of Texas-Southwestern Medical Center in Dallas. Dr. Stettler is board certified in OB/GYN and Maternal-Fetal Medicine. Dr. Stettler served as the Medical Director of the Obstetrix practice in Ft. Worth until 2001 and is now the Medical Director for Obstetrix Medical Group of Colorado.

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Amy Adelberg, MD


Dr. Adelberg, MD is a native of Louisville, KY. She graduated from Georgetown University and went home for medical school to the University of Louisville.  After completing residency in Obstetrics and Gynecology at Good Samaritan Hospital in Cincinnati, OH, she moved to Chapel Hill, NC for fellowship training in Maternal-Fetal Medicine at the University of North Carolina.  Dr. Adelberg is board certified in OB/GYN and Maternal-Fetal Medicine. She has been a part of Obstetrix Medical Group of Colorado since the completion of her fellowship in 2004.

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Sasha Andrews, MD


Dr. Andrews moved here from Texas in 2011 to pursue Maternal-Fetal Medicine training at University of Colorado. She completed residency training in Dallas, at University of Texas Southwestern Medical Center, and medical school in Houston, at Baylor College of Medicine. Dr. Andrews is board certified in OB/GYN and Maternal-Fetal Medicine. She joined Obstetrix Medical Group of Colorado in 2014.

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Tara Becker, MD


Dr. Becker graduated magna cum laude from Wright State University in Dayton, Ohio. Dr. Becker completed her medical degree, residency training and maternal-fetal medicine fellowship at the University of Colorado Medical School. As a board certified obstetrician and gynecologist and maternal-fetal medicine specialist, Dr. Becker began practicing in a maternal-fetal practice in Las Vegas and then returned to her home state of Colorado in 2007.

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Shira Fishman, MD


Dr. Fishman graduated from New York University School of Medicine, where she also completed her internship and residency. She completed her fellowship in maternal-fetal medicine at New York Presbyterian-Weill Cornell Medical Center in New York. Dr. Fishman is board certified in obstetrics and gynecology and maternal-fetal medicine. She joined Obstetrix Medical Group of Colorado in 2011.

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Oliver Jones, MD


Dr. Jones completed his medical degree at the University of California, Los Angeles. His residency training was completed at the University of Arizona and maternal-fetal medicine fellowship at the University of California, San Diego. Dr. Jones is a board certified obstetrician and gynecologist and maternal-fetal medicine specialist. He joined the Department of Obstetrics and Gynecology at the University of Colorado in 1991 but left to join Obstetrix Medical Group of Colorado in 2000.

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Bronwen Kahn, MD


Dr. Kahn is board certified in Obstetrics and Gynecology and Maternal-Fetal Medicine. She graduated from Wellesley College with a major in music and graduated medical school at Columbia College of Physicians and Surgeons in New York City. She completed her internship, residency and maternal-fetal medicine fellowship at the University of Colorado. Dr. Kahn joined Obstetrix Medical Group of Colorado in 2009 and rejoined Obstetrix in 2014 after a year practicing maternal-fetal medicine in New Zealand.

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Richard Porreco, MD


Dr. Porreco graduated magna cum laude from the University of Colorado.  He completed a residency in OB-GYN at the University of Colorado and a fellowship in Maternal Fetal Medicine and Genetics at the University of California, San Diego. He has received Board Certifications in OB-GYN, Maternal Fetal Medicine and Medical Genetics.  Dr. Porreco is the founder of the medical practice that became Obstetrix in March of 1998. 

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