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About
Dr. Ryohei Sekimoto is a physician in the OB-GYN and reproductive medicine team at Kiba Park Reproductive Center (Kiba Park Clinic) in Tokyo. Born in Yokohama, Kanagawa Prefecture, he graduated from Kitasato University Faculty of Medicine in 1994 and trained through Kitasato University Hospital, Fuchinobe General Hospital and Sagamihara National Hospital (source: clinic doctor introduction page).
He has held his OB-GYN certified-physician and clinical cytology specialist credentials since 1999 and joined Kiba Park Clinic in January 2011, giving him more than 15 years of continuous service at this JISART-accredited fertility center and over 30 years of overall OB-GYN practice.
Clinical Expertise
- IVF and assisted reproduction management — full-cycle care from stimulation planning to embryo transfer
- Infertility diagnosis and treatment — ovulation disorders, diminished ovarian reserve and other female-factor causes
- Clinical cytology — an additional specialist credential in cytopathology screening, supporting gynecological cancer screening and abnormality work-ups
- General gynecology — diagnosis and management of common gynecological conditions grounded in university-hospital and national-hospital training
Why Choose Dr. Ryohei Sekimoto
Three board certifications. Dr. Sekimoto is certified as a Japan Society of Obstetrics and Gynecology specialist, a Japanese Society for Clinical Cytology specialist and a reproductive medicine specialist — a combination that spans gynecology, cytodiagnosis and ART.
30+ years of practice. Since 1994 he has worked across Kitasato University Hospital, Sagamihara National Hospital and Yokohama Central Hospital, accumulating broad OB-GYN experience before specializing in fertility care.
General-hospital perspective. Unlike physicians trained only in fertility clinics, his background in university and national hospitals suits patients whose infertility intersects with other gynecological findings, including cytology screening results.
Long-standing clinic continuity. He has practiced at Kiba Park Clinic since 2011 and knows its laboratory protocols, team workflows and patient population intimately.
Professional Certifications & Affiliations
- OB-GYN Specialist — Japan Society of Obstetrics and Gynecology
- Clinical Cytology Specialist — Japanese Society for Clinical Cytology (1999)
- Reproductive Medicine Specialist — Japanese Society for Reproductive Medicine
- Member: Japanese Society for Reproductive Medicine; Japan Society of Obstetrics and Gynecology; Japanese Society for Clinical Cytology
Suitable For
- Patients needing combined OB-GYN and fertility care: a general-hospital-trained specialist who can look beyond the ART protocol.
- Patients preferring an experienced male physician: another attending option within the clinic’s mixed-gender physician team.
- Complex infertility cases: 30-plus years of clinical exposure supports work-up of multifactorial subfertility.
- Patients with gynecological screening concerns: his cytology specialization is useful for cervical screening and abnormality follow-up during fertility treatment.