Oak Clinic Sumiyoshi

Oak Clinic Sumiyoshi — Osaka IVF & Fertility Center

About Oak Clinic Sumiyoshi

Oak Clinic Sumiyoshi opened in 2000 in Osaka’s Nishinari ward as the founding clinic of Medical Corporation Oak (Oak Clinic Group). The group has since grown into one of Japan’s better-known reproductive-medicine networks, adding an Umeda branch in Osaka (2012) and the Ginza branch in Tokyo (2016); its Namba clinic closed in August 2020. Across the group, 15 physicians are listed as full-time or part-time staff (source: official group staff directory, 2026).

The clinic sits a short walk from Tamaguchi Station and runs late weekday clinics until 19:00 plus Saturday morning sessions, a schedule designed so working patients can keep stimulation monitoring appointments without taking time off.

Oak Clinic Sumiyoshi does not publish age-specific clinical pregnancy rates. Japanese ART clinics are not required by the Japan Society of Obstetrics and Gynecology (JSOG) to disclose success-rate data, and none appears on the clinic’s website (as of the 2026 site review).

Accreditations & Awards

• Founded 2000 — Oak Clinic Sumiyoshi opened as the first clinic of Medical Corporation Oak (source: corporate profile page)
• 2012 / 2016 group expansion — Umeda (Osaka) and Ginza (Tokyo) branches opened, sharing the group’s physicians, laboratory and fee system (source: corporate profile page)
• Registered under Japan’s national health insurance infertility coverage — basic fertility treatment became insurance-covered nationwide from April 2022, and the group maintains a dedicated insurance-coverage information section (source: official website)
• No JCI or other international accreditation is listed on the clinic’s official website

Why Choose Oak Clinic Sumiyoshi

• Fully individualized IVF protocols: stimulation plans are designed around each patient’s age, ovarian reserve and treatment history rather than a standard recipe — the clinic’s stated core approach (source: official treatment pages)
• Depth of implantation testing: endometrial receptivity analysis (ERA), vaginal/uterine microbiome tests (EMMA/ALICE), implantation-failure work-up (IFCE), time-lapse embryo culture, IVM and PRP endometrial regeneration therapy are all offered in-house (source: official treatment pages)
• Own reproduction center: the Sumiyoshi laboratory can handle up to 20 egg retrievals per day with incubators, micromanipulation and cryopreservation equipment of international standard (source: official reproduction center page)
• Convenient scheduling: weekday evening clinic until 19:00 and Saturday sessions, plus a recommended online first visit so patients can confirm a treatment direction before traveling to the clinic
• Support for distant patients: private inpatient rooms with bath, toilet, TV and refrigerator are available for patients traveling from afar; Sumiyoshi is the group’s branch with obstetric inpatient facilities; a paid nursery (“Orchid Room”) serves patients with children
• Overseas patient services: English and Chinese site versions, a dedicated Chinese-language consultation channel, and a transparent published fee schedule

IVF & Fertility Services

• In Vitro Fertilization (IVF) with individually designed stimulation
• ICSI (intracytoplasmic sperm injection)
• PGT / PGD (preimplantation genetic testing), with genetic counseling
• Egg freezing and fertility preservation
• Intrauterine insemination (IUI)
• Male infertility work-up and treatment (semen analysis, sperm DNA fragmentation, high-magnification sperm selection, micro-TESE)
• Endometrial receptivity testing (ERA) and microbiome testing (EMMA/ALICE)
• Implantation failure testing (IFCE), assisted hatching, blastocyst culture, IVM (in vitro maturation)
• PRP endometrial regeneration therapy
• Specialized outpatient clinics for endometriosis and fetal diagnosis

Fees & Packages

The clinic uses a prepayment (deposit-and-settle) system; prices below are from the official price list after the 1 June 2026 revision, tax included (USD at ~¥150 = US$1):

• IVF prepayment: ¥350,000-500,000 (~US$2,330-3,330), settled against actual treatment
• Frozen-thawed embryo transfer prepayment: ¥150,000 (~US$1,000)
• Egg retrieval: base ¥70,000 (~US$470) + ¥4,000 (~US$27) per egg collected
• ICSI: base ¥50,000 (~US$330) + ¥30,000 (~US$200) per 5 eggs injected
• Embryo culture to day 3: ¥60,000 (~US$400); blastocyst culture supplement: ¥30,000 (~US$200)
• Embryo transfer: base ¥75,000 (~US$500)
• ERA test: ¥128,140 (~US$855) for the clinic’s own IVF patients
• Egg freezing prepayment: ¥250,000-300,000 (~US$1,670-2,000)

Overseas patients without a Japanese residence card are charged treatment fees plus a 50% overseas surcharge; using a designated agent can reduce the surcharge (source: official overseas patient notice). Some components are insurance-covered for residents since April 2022.

Patient Journey

1. First-visit booking: reserve by phone or email; an online first visit is recommended to confirm the treatment direction before coming in person
2. Initial consultation: download or complete the questionnaire; bring prior test results if available
3. Fertility assessment: hormone panel including AMH, ultrasound antral follicle count, and partner semen analysis
4. Protocol design: a fully individualized stimulation plan based on age, ovarian reserve and history
5. Treatment cycle: ovarian stimulation with follicle monitoring, egg retrieval, IVF/ICSI fertilization, embryo culture, then fresh or frozen transfer
6. Pregnancy test: blood test about two weeks after transfer; on a positive result patients move to obstetric follow-up

Local Legal Framework

IVF, ICSI and PGT-A are legal and widely practiced in Japan under the ethics guidelines of the Japan Society of Obstetrics and Gynecology (JSOG). Since April 2022, mainstream infertility treatments are covered by national health insurance for eligible patients, while PGT-A remains self-pay and restricted to defined indications. Egg donation and commercial surrogacy are prohibited; the legal status of embryos is not defined by Japanese law. Foreign patients generally need to document a current marital partnership (JSOG rules apply to individual clinics).

Location

• Address: 2-7-9 Tamaguchi Nishi, Nishinari-ku, Osaka 557-0045, Japan
• Phone: 0120-009-345 (toll-free within Japan)
• Hours: Monday-Friday 09:00-19:00 (morning, afternoon and evening sessions); Saturday 09:00-16:30; closed Sundays and public holidays. Evening/weekend visits to insured care carry an additional selected-medical-treatment fee