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Maggie Marcrander MD


Dr. Maggie Marcrander moved to San Diego in 2001 after earning degrees in biology and chemistry from Texas Christian University, a medical degree from St. Louis University School of Medicine, and completing her residency at St. John's Mercy Medical Center. She returned in May of 2008 to join Mercy OBGYN and continue her practice of medicine. She has followed in the footsteps of her father who is an established doctor of obstetrics and gynecology in this group.

Prenatal care and delivering babies gives her genuine gratification. Dr. Marcrander believes it's an honor to bring new life into the world and sharing that special moment with parents is a joy and a privilege. Promoting women's health is very important to her as well, which is why she has dedicated her life's work to female care and promoting preventative health care. Dr. Marcrander is an accomplished and disciplined surgeon which makes her invaluable to Mercy OB/GYN Associates and their patients.

In her spare time, she enjoys traveling, cooking, scuba diving and reading. She and her husband Tom have two wonderful children.

Daniel McNeive MD


Dr. McNeive Bio

Jay Padratzik MD


Dr. Padratzik received his undergraduate degree in chemistry from Indiana University and his medical degree from the University of Missouri. After completing his residency at the Medical College of Ohio he moved back to St. Louis and began his practice in OB/GYN.

Dr. Padratzik provides total obstetric care enjoying every birth. He has a special interest in minimally invasive surgery including daVinci robotic surgery, traditional laparoscopy and hysteroscopy. His breadth of surgical expertise allows women more choices in their reproductive health.

His practice encompasses continuity of care with women from adolescence to menopause and beyond.

Dr. Padratzik is a St. Louis native who enjoys travelling and spending time with his wife Heather and son.

John Sopuch MD


Dr. John Sopuch has practicing OB/GYN for over 35 years. He has been associated with St. John’s Hospital since it moved to West County area. He has dedicated his life to the care of women through all stages of their lives. He is a disciplined surgeon who has seen the advances of surgery and remains current.

Dr. Sopuch graduated from St. Louis University and completed residency at St. John’s Mercy Medical Center. He continues to be dedicated to his profession and its future. He teaches new physicians as a proctor for the Residency Program at St. John’s.

In his spare time he enjoys playing hockey, golfing and reading. His daughter Dr. Maggie Marcrander joined him and his colleagues at Mercy OB/GYN in 2008.

Gary Wasserman MD


Dr. Wasserman has enjoyed providing care in obstetrics and gynecology for over 25 years in private practice and continues to practice his love for medicine after recently joining Mercy OB/GYN in 2008.

He graduated from the Six-Year Medical Program at the University of Missouri in Kansas City and holds an academic position as Assistant Professor in the Department of Obstetrics and Gynecology at the Washington University School of Medicine. In 2007, he proudly received the teaching award from the Department of Obstetrics and Gynecology for work with the Residents at Missouri Baptist Hospital. He has also participated in the partnership program between Barnes Jewish Hospital and Riga, Lativia’s Bikkur Holim and Maternity Hospital.

Dr. Wasserman is a skilled and regimented surgeon who devotes much of his time to women’s health and promoting preventative health care for women covering the entire spectrum from adolescence to perimenopause, and menopause through geriatric care. Prenatal care is also a specialty for Dr. Wasserman; he feels one of the best reward is to bring a child into this world for his patients. Quality time for his patients is Dr. Wasserman’s motto.

In his spare time, Dr. Wasserman enjoys to travel, spend time with his family and serving on various general community and Jewish community boards.

Heidi Gioia RNCP, APN, OGNP


Heidi Gioia has dedicated her entire career to the health maintenance and the improvement of the quality of life for women. She attended Missouri Baptist School of Nursing in the early 1980’s and started her career as a Labor & Delivery RN. After eight years she pursued and completed her goal of becoming a Women’s Health Care Nurse Practitioner by completing The University of Texas Dallas Southwestern Medical School’s Nurse Practitioner Program in 1988.

She has been in practice here at Mercy OB-GYN since 1988. She feels very privileged to have been part of so many patients lives, some from their very first experience at an OB-GYN office through to seeing their children born. It is wonderful to have so many family members- mothers, daughters, sisters, aunts, grandmothers-all seen here at our offices.

Kathy Powers RDMS


Kathy Powers joined our practice in February 1986 to expand the office’s ability to offer Ultrasound Services to our patients. She has been practicing in the field of Ultrasound since 1979. Kathy has been continuously credentialed member of the American Registry of Diagnostic Sonographers since 1981. She is a member of the Society of Diagnostic Medical Sonographers.

Kathy’s passion is with the advancing 4-D/3-D technology. Kathy has had the opportunity to enjoy longevity of being with Mercy OBGYN long enough to watch her “Ultrasound Babies” grow to full adults. Her favorite moments come from the joy of introducing new parents to the beauty of their developing baby.

Kathy is the mother of three “mostly” grown children. She enjoys visiting her children at college and traveling with her husband.