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About
In 2004, Nancy Klein helped found Seattle Reproductive Medicine — the practice that now operates as Pinnacle Fertility Seattle — and has been its IVF medical director since. More than two decades of building one clinic from the ground up is unusual in a field where physicians often job-hop between networks; it is why her name is tied to this site’s outcome record rather than to a résumé of other people’s programs. She earned her medical degree at Vanderbilt University School of Medicine and trained in reproductive endocrinology and infertility.
Her focus is where age and egg supply dominate the plan: donor-egg cycles, ovulation induction, and infertility in women trying later in life. That clinical interest is backed by NIH-funded research on egg donation, ovulation induction and female reproductive aging — the same questions she answers for patients day to day. She has run donor-egg programs long enough to coordinate both the recipient side and the donor side.
The local recognition is unusually sustained: Seattle Magazine Best Doctor for 17 straight years (2006-2023) and a Castle Connolly Top Doctor from 2010. She is a member of ASRM and SREI; the sources record her fellowship training and leadership roles rather than a board-certification date.
Clinical Expertise
- Donor egg IVF: donor matching, cycle coordination and single embryo transfer into the carrier
- Advanced maternal age and reproductive aging: counseling and protocols informed by her NIH-funded research
- Ovulation induction: medicated cycles for anovulatory and PCOS-type infertility
- Family-planning egg and embryo freezing
Why Choose Dr. Klein
She built this clinic. A founding partner who has directed its IVF program since 2004 knows its lab, its records and its results in a way a recent hire cannot.
Nearly two decades of recognition in one city. Seattle Magazine Best Doctor 2006-2023 and Castle Connolly Top Doctor since 2010 — a long streak tied to a single practice.
A research background that matches her clinic focus. Her NIH-funded work is on egg donation, ovulation induction and reproductive aging — the exact patients she treats.
Professional Affiliations
Member of the American Society for Reproductive Medicine and the Society for Reproductive Endocrinology and Infertility. NIH-funded researcher in egg donation and female reproductive aging. Founding partner of Seattle Reproductive Medicine (2004).
Suitable For
- Patients considering donor eggs, whether for age, diminished reserve or genetic reasons
- Women planning pregnancy later in life
- Ovulation disorders needing induction
- Patients egg- or embryo-freezing for family planning