Leading IVF Doctors & Specialists

Christina Boots, MD

Reproductive Endocrinologist

Christina Boots, MD trained across Chicago — Loyola for college and medical school, the University of Chicago for residency — took REI subspecialty fellowship at Washington University, and returned for a master's in clinical investigation. She is an associate professor at Northwestern University and practices at the center's Chicago office.

United States

Christina (Christy) Tise, MD, PhD

Director, Reproductive Genetics Clinic

Dr. Christina Tise is Director of the Reproductive Genetics Clinic and Assistant Professor of Medical Genetics at Stanford University. An MD/PhD graduate of the University of Maryland with Stanford genetics residency and biochemical genetics fellowship training, she specializes in reproductive genetics, differences of sexual development (DSD), and PGD/PGS genetic counseling.

United States

Christo G. Zouves, MD

Reproductive Endocrinologist

Christo G. Zouves, MD has worked in IVF since the technique arrived in North America and has practiced since 1981. He directed the University of British Columbia's IVF program for seven years, founded Zouves Fertility Center in 1999, and joined HRC Fertility when it acquired his center in 2025. His research covers embryonic mosaicism, PGT-A and mitochondrial DNA.

United States

Christopher Sipe, M.D.

Reproductive Endocrinologist

Dr. Christopher Sipe went into independent obstetric and gynecologic practice after residency and only later completed a reproductive endocrinology fellowship at the University of Iowa. He is President of Fertility Centers of Illinois, treats infertility, menstrual irregularities and PCOS, and performs hysteroscopy for uterine anomalies and pathology.

United States

Christos Coutifaris, MD, PhD

Reproductive Endocrinologist

Christos Coutifaris holds the Celso-Ramon Garcia Chair in Obstetrics and Gynecology at Penn and has spent his career on why embryos do and do not attach, studying endometrial biology and the molecular signals of implantation with sustained NIH funding. An MD and PhD from Penn, he has practiced at the same institution since training and consults in English, Greek and French.

United States

Dr. Chun-Chi Lu

Part-Time Attending Physician

Dr. Chun-Chi Lu is the part-time attending physician in NUWA Fertility Center's autoimmune department, practising allergy, clinical immunology and rheumatology. The main hospital posts are Kaohsiung Veterans General Hospital and Tri-Service General Hospital, with a former assistant professorship at National Defense Medical Center, where medical school was completed, plus doctoral training at the University of Washington. Named specialties run from autoimmune disease pregnancy consultation and antiphospholipid syndrome to lupus, intestinal immunology, ankylosing spondylitis, vasculitis and myositis.

Taiwan, China

Chung-Hao Lu

Director, NUWA Lab

Chung-Hao Lu is a laboratory director rather than a treating physician: he runs NUWA Lab and holds the chief research and development role at NUWA Biomedical. A Ph.D. in embryology from the National Taiwan University Institute of Biotechnology, with doctoral research on embryonic stem cells at RIKEN in Japan, he also convenes the Embryology Institute at National Taiwan University and sits on the laboratory quality committee of the Taiwanese Society for Reproductive Medicine.

Taiwan, China

Dr. Cindy Chan

Director of International Medical Services

Dr. Cindy Chan is Director of International Medical Services and attending physician at NUWA Fertility Center Taipei. The clinic lists two degrees for her, the School of Medicine at NYCU and general biology at UCLA, followed by an attending physician post in the department of reproductive medicine at Taipei Medical University. Named specialties cover infertility, IVF, IUI, egg, embryo and sperm freezing, ovarian failure, polycystic ovary syndrome, endometriosis, recurrent miscarriage and hysteroscopy.

Taiwan, China

Clarisa R. Gracia, MD, MSCE

Reproductive Endocrinologist

Clarisa Gracia is the physician named as medical and practice director of Penn Fertility Care on its SART registry record, and chief of Penn's reproductive endocrinology division. An NIH-funded clinical researcher with a master's in clinical epidemiology, she directs fertility preservation for cancer patients and works in Spanish and French as well as English.

United States

Colleen L. Casey

Reproductive Endocrinology & Infertility Specialist

Dr. Colleen Casey is the President of the Center for Reproductive Medicine (CRM) in Minneapolis and a reproductive endocrinology and infertility specialist who has cared for patients at CRM since 2011. A Saint Paul native, she earned her MD from the University of Minnesota Medical School, completed her OB/GYN residency at the University of Michigan, and her REI fellowship at the University of Vermont. She specializes in individualized fertility plans, IVF, LGBTQ+ family building, and complex infertility.

United States

Colleen M. Miller, MD

Colleen M. Miller, MD appears in ProIVF's physician records for Nashville Fertility Center but is not listed on the clinic's current published physician roster. Patients considering care with Dr. Miller should confirm her practice status directly before booking.

United States

Courtney Failor, MD

MD

Courtney Failor, MD, is a reproductive endocrinologist at Aspire Fertility in San Antonio and McAllen. She took both her bachelor's degree and her medical degree at the University of North Carolina at Chapel Hill, finished obstetrics and gynecology residency at UT Health Science Center at San Antonio in 2014, taught there as a clinical instructor on the UT faculty, then completed a reproductive endocrinology and infertility fellowship. She holds board certification in obstetrics and gynecology and in reproductive endocrinology and infertility.

United States