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About
Natalia Llarena trained end to end at the Cleveland Clinic — residency and REI fellowship there — and took the clinic’s Tommaso Falcone Award for excellence in reproductive endocrinology. That training shows in a practice that blends surgery and IVF rather than treating them as separate worlds.
Before Cleveland she earned honors degrees in human biology at Stanford and her MD at Northwestern’s Feinberg School of Medicine, where she received a research-excellence award. She has since been appointed to teach medical students at the Case Western Reserve School of Medicine, and her teaching extends to anatomy labs, surgical-skills coaching, and a ten-week course she designed for undergraduates on the biology, society and politics of HIV/AIDS.
Her clinical and research focus is assisted reproduction, ovarian aging, endometriosis and reproductive surgery, and she has authored more than 25 peer-reviewed articles and book chapters in those areas. She practices at HRC Fertility Pasadena.
Clinical Expertise
- Endometriosis-Associated Infertility: Laparoscopic diagnosis and lesion excision followed by integrated ART
- Reproductive Surgery: Minimally invasive hysteroscopic and laparoscopic surgery for uterine fibroids, polyps, tubal disease and pelvic adhesions
- IVF and Full-Cycle ART: Individualized management from stimulation to transfer
- Ovarian Aging and Fertility Preservation: Reserve testing and egg or embryo freezing for medical and elective reasons
- Male-Factor Evaluation: Coordinated workup with andrology colleagues
Why Choose Dr. Llarena
The Cleveland Clinic pipeline, award at the end. Residency and fellowship at one institution, capped by the program’s named excellence award.
A surgeon who also runs IVF. Comfort with the operating room and the embryo transfer means patients with correctable anatomy do not get bounced between doctors.
Twenty-five-plus publications. A sustained research record across her specialty’s core topics.
Professional Affiliations
Diplomate of the American Board of Obstetrics and Gynecology; Fellow of the American College of Obstetricians and Gynecologists; member of the Society for Reproductive Endocrinology and Infertility, the American Society for Reproductive Medicine, and the American Association of Gynecologic Laparoscopists. Appointed teacher of medical students at the Case Western Reserve School of Medicine.
Suitable For
- Endometriosis patients: From laparoscopic surgery through IVF with one physician
- Surgical infertility cases: Fibroids, polyps, tubal blockage or adhesions needing intervention
- Ovarian aging and preservation: Precise reserve assessment and freezing
- Complex combined cases: Where medicine and surgery must be sequenced together