FOR NEW PATIENT APPOINTMENTS FOR ALL OFFICES PLEASE CALL: 866.258.8467 (VIOS).
EXISTING PATIENTS PLEASE CALL YOUR OFFICE DIRECT AT THE NUMBER LISTED BELOW.
Our Team
Amber R. Cooper, MD, MSCI, FACOG
Medical & IVF Practice Director
Offices: Swansea, IL, St. Louis, MO, O’Fallon, MO & Telehealth
Amber R. Cooper, MD is a reproductive endocrinologist and infertility specialist and is the Medical and IVF Practice Director of Vios Fertility Institute St. Louis/CRMW who understands both personally and professionally the challenges of infertility. Learn more about Dr. Cooper.

Julie S. Rhee, MD, FACOG
St. Louis Regional Practice Director
Offices: St. Louis, MO, O’Fallon, MO, Swansea, IL & Telehealth
Dr. Rhee is a reproductive endocrinologist and infertility specialist and Director of the Preimplantation Genetic Screening Program at Vios Fertility Institute St. Louis. She is double board certified in Obstetrics and Gynecology as well as Reproductive Endocrinology and Infertility (REI). Learn more about Dr. Rhee.
Violet Klenov, MD, FACOG
Offices: St. Louis, MO, O’Fallon, MO, Swansea, IL & Telehealth
Dr. Klenov completed her Obstetrics and Gynecology residency at Washington University in St. Louis, and completed her fellowship in Reproductive Endocrinology and Infertility at the University of Iowa. Learn more about Dr. Klenov.
MacKenzie Purdy, MD
Offices: Swansea, IL, O’Fallon, MO, St. Louis, MO & Telehealth
After receiving her medical degree at the University of Missouri, Dr. Purdy completed her Obstetrics and Gynecology residency at the University of Kentucky and completed her Reproductive Endocrinology and Infertility Fellowship at the Mayo Clinic. Learn more about Dr. Purdy.
Shawn Zimmerman, PhD, HCLD (ABB)
Laboratory Director
Offices: St. Louis, MO, O’Fallon, MO & Swansea, IL
Dr. Zimmerman is the Lab Director for Vios Fertility Institute St. Louis. He holds both a Master’s of Science and Doctorate in Reproductive Physiology with a focus on molecular pathways and continues to help advance our understanding of human reproduction. Learn more about Dr. Zimmerman.
Our Locations
St. Louis, MO | Clinic
621 S. New Ballas Rd., Tower A, Suite 676, St. Louis, MO 63141
(Mercy Hospital, Medical Tower A)
T: 314.266.2062 | F: 314.782.2035
Hours: Monday-Friday | 8AM – 4PM
Services Provided at This Location: New Patient Consultations, Diagnostic Testing, & Cycle Monitoring
O’Fallon, MO | Clinic
5551 Winghaven Blvd., Suite 230, O’Fallon, MO 63368
T: 636.542.4940 | F: 636.542.4808
Hours: Monday-Friday | 8AM – 4PM
Services Provided at This Location: New Patient Consultations, Diagnostic Testing, IUI & IVF Cycle Monitoring, IUI Inseminations
Swansea, IL | Clinic & IVF Lab
6 Bronze Pointe, Swansea, IL 62226
T: 618.509.5523 | F: 618.206.5017
Hours: Monday-Friday | 8AM – 4PM
Services Provided at This Location: New Patient Consultations, Diagnostic Testing, IUI & IVF Cycle Monitoring, IUI Inseminations, IVF Treatment Procedures (Egg Retrieval, Embryo Transfer, & Egg, Sperm, and Embryo Cryopreservation).