Kazuki Nakao

About

Dr. Kazuki Nakao graduated from Kinki University’s Faculty of Medicine in 2001 and trained at Nagoya University-affiliated Komaki City Hospital, then practiced at Juntendo University Hospital and Juntendo Nerima Hospital, before joining the Sugiyama group in 2017 and moving to the newly opened Shinjuku branch in 2018 — giving him continuity with the clinic from day one. He has 25 years’ experience as a physician and 20 years in reproductive medicine.

He is a JSOG board-certified obstetrician-gynecologist and a Reproductive Medicine Specialist of the Japan Society for Reproductive Medicine. His practice covers the full IVF program: ovulation induction, IVF/ICSI, egg freezing, recurrent implantation failure, recurrent pregnancy loss (secondary infertility), hysteroscopy, PGT-A, endometritis and low AMH. He is in clinic Tuesdays, Wednesdays, Thursdays and Sundays.

Clinical Expertise

• Ovulation induction and controlled ovarian stimulation
• IVF and ICSI cycle management
• Egg freezing and fertility preservation
• Recurrent implantation failure and recurrent pregnancy loss work-up
• Hysteroscopic evaluation and endometritis treatment
• PGT-A counseling and low AMH strategy
• Second-child (secondary) infertility evaluation

Why Choose Dr. Kazuki Nakao

Dr. Nakao’s signature is logic made visible: he walks patients through their own test data until the plan makes sense to them before anything is decided — the clinic recommends him specifically for patients who want confidence built on evidence rather than authority. He is known for digging for causes rather than repeating failed cycles, and his advice extends beyond the treatment window: he counsels on daily life, underlying conditions and long-range family design, which matters for patients balancing careers, a first child, or age-related deadlines. As part of the Shinjuku team since 2018, he has managed hundreds of the cases the branch was built to handle.

Professional Affiliations

• Board Certified Obstetrician and Gynecologist, Japan Society of Obstetrics and Gynecology (JSOG)
• Reproductive Medicine Specialist, Japan Society for Reproductive Medicine (JSRM)

Suitable For

• Data-driven patients: treatment advanced step by step from test results and transparent analysis
• Recurrent implantation failure and recurrent loss patients: two decades of experience in cause-hunting protocols
• Patients just starting treatment: a complete, patient walkthrough from baseline testing to plan
• Secondary infertility patients: targeted evaluation for couples struggling with a second pregnancy