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About
Dr. Hisao Osada is an Advisor at Kato Ladies Clinic, a role he has held since 2014 alongside his clinical work at the clinic since 2009. He graduated from Nihon University School of Medicine in 1969 and spent the core of his academic career there — rising to associate professor and chief of obstetrics and gynecology at Nihon University Surugadai Hospital (2003), then full professor (2007). He has directed the Shinjuku ART Clinic (2011) and currently also directs Natural ART Clinic Nihonbashi in Tokyo.
His career covers the entire era of assisted reproduction in Japan, from early IVF to today’s minimal-stimulation and frozen-transfer programs.
Clinical Expertise
- IVF and ICSI strategy in natural and minimal-stimulation cycles
- Female infertility evaluation, including tubal and surgical factors
- Gynecologic endoscopic surgery background applied to fertility care
- Senior-level case review and second opinions
Why Choose Dr. Hisao Osada
Dr. Osada offers what few fertility physicians can: more than five decades of continuous practice, a university professorship, and directorships of two dedicated ART clinics alongside his advisory role at KLC. Patients see him for perspective — protocol review after failed cycles, or guidance on whether to continue, adjust or change approach. His board memberships in the Japan Fertility and Implantation Society and gynecologic surgery societies reflect standing across both the reproductive and surgical communities.
Professional Affiliations & Certifications
- Specialist in Obstetrics and Gynecology, Japan Society of Obstetrics and Gynecology (JSOG)
- Board Member, Japan Fertility and Implantation Society
- Board Member, Japanese Society for Endoscopic Gynecology
- Board Member, Japanese Society for Obstetric and Gynecologic Surgery
Suitable For
- Second-opinion seekers: senior review of long or unsuccessful treatment histories.
- IVF/ICSI couples: strategic oversight from one of Japan’s experienced ART clinicians.
- Patients with surgical gynecological history: endoscopy and surgery-informed fertility judgment.