We are doing our utmost to provide fertility and pregnancy care for patients, with modern treatment policies and cutting-edge technology combined with experience.

Our treatment is always tailored to each individual’s fertility troubles, and includes things such as conventional IVF and micro-insemination. We have specialized outpatient clinics for implantation failure, habitual miscarriage, male infertility, etc., and provide many kinds of support at every stage of the process. In addition, Oak Clinic,Sumiyoshi provides infertility outpatient services and IVF services 24 hours a day, 7 days a week when required, and Oak Clinic,Ginza provides treatment even on the year’s end holidays.

Our laboratory is equipped with the most effective equipment, including private power generation equipment and clean rooms. All fertilized oocytes are individually managed by a computer system to ensure high-precision quality control.
We have a large number of academically certified embryologists and our own research department to develop and actively introduce new technologies for in vitro fertilization.

Of course, we have not only advanced reproductive medical techniques such as blastocyst transplantation, assisted hatching (AHA), embryo freezing/thawing, and testicular sperm extraction (TESE), but also built-in counseling as well, for various types of situations, to help you get pregnant easily.

The medical corporation Oak Association is working together with you for your goal of building your dream family.

For Consultation/Inquiry:

For those who have anxiety about starting treatment or transferring to another hospital, the Oak Association accepts consultations by phone or email.

  • For those who are wondering whether to start treatment
  • For those who are currently attending another clinic and wish to be transferred to the Oak Clinic

Whether you want information about treatment details, policies, fees, etc., please feel free to contact us. Experienced professional staff will be happy to assist you. Email and phone consultation with help center professionals is free.

English Help Desk



【Reception time】
Tuesday~Saturday  09:00~17:00