'%20transform='translate(88%20-32)'%3e%3cpath%20fill='%23fff'%20d='M-128%2032h720v480h-720z'/%3e%3ccircle%20cx='523.1'%20cy='344.1'%20r='194.9'%20fill='%23bc002d'%20transform='translate(-168.4%208.6)scale(.76554)'/%3e%3c/g%3e%3c/svg%3e)
Leading Specialists in Japan
Reproductive specialists in Japan
Dr. Ryohei Sekimoto
Physician
Dr. Ryohei Sekimoto is a physician at Kiba Park Reproductive Center in Tokyo with over 30 years of obstetrics and gynecology experience. He holds three Japanese board certifications - OB-GYN specialist, clinical cytology specialist and reproductive medicine specialist - and has served at Kitasato University Hospital, Sagamihara National Hospital and Kiba Park Clinic, joining the fertility center in 2011.
Japan Dr. Sugiyama
Physician
Dr. Sugiyama is a female OB-GYN physician at Kiba Park Reproductive Center in Tokyo, one of only five JISART-accredited fertility clinics in the city. Dr. Sugiyama takes part in infertility diagnosis and assisted reproduction cycles including IVF and IUI, and Google Maps reviewers highlight a patient-centered, attentive consulting style.
Japan 
Dr. Kei Tanaka
Founding Director, Tanaka Ladies Clinic Shibuya
Dr. Kei Tanaka is founder and director of Tanaka Ladies Clinic Shibuya, which opened in February 2024. Educated at Fujian Medical University in China and the University of Tokyo (doctorate, 1999), she holds four Japanese board certifications - obstetrics and gynecology, reproductive medicine as specialist and instructor, clinical genetics and Kampo medicine - and has managed more than 20,000 natural-cycle and mild-stimulation IVF cases.
Japan 
Dr. Tsurugi Tanaka
Obstetrician and Gynecologist
Dr. Tsurugi Tanaka is a JSOG-certified obstetrician-gynecologist on the two-physician team at Tanaka Ladies Clinic Shibuya. A Gunma University medical graduate (2016) who trained at three university and national hospitals plus two fertility clinics, she finished the University of Tokyo doctoral program in April 2025 while carrying a full clinical schedule, and runs the clinic's infertility work-up, timed-intercourse and IUI track.
Japan Dr. Akari Torimitsu
Physician
Dr. Akari Torimitsu is a physician at Kiba Park Reproductive Center in Tokyo, holding four Japanese board certifications in obstetrics and gynecology, reproductive medicine, women's medicine and integrative medicine. She earned her Doctor of Medical Science at the University of Tokyo graduate school, specializing in reproductive, developmental and aging medicine, and previously served as an assistant professor in the university hospital's OB-GYN department.
Japan 
Asako Watanabe
Physician (Part-Time)
Dr. Asako Watanabe is a part-time obstetrician and gynecologist at Hanaoka IVF Clinic (Shinagawa). A 2011 Nippon Medical School graduate trained at Tokyo Rinkai Hospital, she has built extensive OB/GYN clinical experience across several Tokyo general and mothers-and-children hospitals.
Japan 
Mayu Yamada
Attending Physician (Full-Time)
Dr. Mayu Yamada is a full-time obstetrician and gynecologist at Hanaoka IVF Clinic (Shinagawa), joining Futaraba Medical Corporation in 2022. A Nippon Medical School graduate certified by JSOG and trained in women's health medicine, she provides continuous, attentive care from infertility assessment through IVF cycle management.
Japan Dr. Yamamoto
Physician
Dr. Yamamoto is an OB-GYN physician at Kiba Park Reproductive Center in Tokyo, one of only five JISART-accredited fertility clinics in the city. As part of the infertility team, Dr. Yamamoto contributes to diagnosis and assisted reproduction cycles including IVF and IUI, consulting on Tuesdays when the clinic's ART session runs until 18:30.
Japan Dr. Yonezawa
Physician
Dr. Yonezawa is an OB-GYN physician at Kiba Park Reproductive Center in Tokyo, one of only five JISART-accredited fertility clinics in the city. As part of the infertility team, Dr. Yonezawa contributes to diagnosis and assisted reproduction cycles including IVF and IUI, consulting on Thursdays when the clinic's ART session runs until 18:30.
Japan 
Dr. Atsumi Yoshida
Chairman
Dr. Atsumi Yoshida is Chairman and Clinic Director of Kiba Park Reproductive Center, a JISART-accredited fertility clinic he founded in 1999. A reproductive medicine and clinical genetics specialist with over 35 years of experience, he is one of the few Japanese physicians who treat both female and male infertility, and has personally performed more than 16,000 egg retrievals and 22,800 embryo transfers.
Japan 
Dr. Hiroshi Fukumasu
Board-Certified Obstetrician and Gynecologist (Instructor)
Dr. Hiroshi Fukumasu is an OB/GYN with a subspecialty in fetal diagnosis and a Doctor of Medicine from Osaka City University. He bridges IVF treatment with prenatal care at Oak Clinic Sumiyoshi, advising patients on ultrasound-based prenatal assessment and high-risk pregnancy history.
Japan 
Fumio Suyama
Reproductive Medicine Specialist
Dr. Fumio Suyama is a reproductive medicine physician at Sugiyama Ob-Gyn Clinic Shinjuku with 18 years as a physician, all of them in fertility care. Trained at Kyoto University and in maternal-fetal and ultrasound medicine, she specializes in ovulation induction, recurrent implantation failure, hysteroscopic surgery and endometritis, supporting patients from preconception through pregnancy complications.
Japan Showing 13-23 of 85
Ready to start your fertility journey?
Get a personalized plan from our medical advisors