Dr. Hiroshi Fukumasu

About

Dr. Hiroshi Fukumasu trained at Shiga University of Medical Science and earned a Doctor of Medicine degree from Osaka City University. Before joining Medical Corporation Oak in 2015, he worked across Osaka’s public hospital system — Osaka City University Hospital, Osaka City Sumiyoshi Citizen’s Hospital and Osaka City Children’s Hospital (Medical Center) — accumulating experience that spans general obstetrics, perinatal medicine and fetal imaging.

His clinical focus is fetal diagnosis: the use of detailed ultrasound (fetography) to assess the unborn baby before birth. His published work includes studies on amniotic fluid volume abnormalities and “the significance of fetography in prenatal diagnosis” (source: official clinic staff profile).

At Oak Clinic Sumiyoshi — the group’s branch with obstetric inpatient facilities — he provides continuity between fertility treatment and early pregnancy surveillance, a particularly valuable path for patients who conceive through IVF later in life.

Clinical Expertise

• Fetal diagnosis and prenatal ultrasound: specialist-level assessment of fetal structure and wellbeing, including fetography
• IVF and infertility treatment: standard fertility care within the Oak Clinic reproductive program
• Perinatal medicine: management planning for pregnancies with prior fetal abnormality findings or high-risk history
• Human genetics consultation interface: applying genetics society experience to prenatal counseling situations

Why Choose Dr. Hiroshi Fukumasu

Few fertility-clinic physicians combine an active fetal diagnosis practice with a Doctor of Medicine degree and cross-society credentials spanning perinatal, neonatal, human genetics, implantation and fetal cardiology groups. For IVF patients, that means early-pregnancy questions and scan findings can be interpreted by the same specialist network that managed the conception attempt, rather than starting over with a new provider.

Professional Affiliations

• Specialist and Instructor, Japan Society of Obstetrics and Gynecology (JSOG)
• Member, Japan Society for Obstetric and Gynecologic Perinatology and Neonatology
• Member, Japan Society for Reproductive Medicine (JSRM)
• Member, The Japan Society of Human Genetics
• Member, The Japan Society of Obstetrics and Gynecology for Reproductive Medicine (fertilization and implantation) and the Japan Fetal Cardiology Society
• Member, Japanese Hysteroscopy Study Group
• Certified physician under the Maternal Health Law

Suitable For

• Infertility patients seeking prenatal diagnosis counseling: one physician comfortable in both the ART lab-side workflow and the prenatal diagnosis room
• Advanced maternal age or prior fetal anomaly history: careful ultrasound-based surveillance planning from early pregnancy
• IVF pregnancies needing detailed follow-up: seamless handover from fertility treatment into obstetric monitoring at the clinic’s Sumiyoshi site