Aoikai Group

What Aoikai Group does

Aoikai Group (医療法人社団 葵会) is a privately held Japanese healthcare and welfare conglomerate founded in February 1978, headquartered in Kashiwa, Chiba Prefecture. It operates 134 facilities across Japan — including 30+ hospitals (general acute, psychiatric, and rehabilitation), 80+ geriatric health care facilities (介護老人保健施設) operating under the "Aoi no Sono" brand, educational institutions (Iryo Sosei University, AOI International College, vocational schools), disability welfare services, home visiting nursing stations, childcare facilities, and Okayama International Hotel — employing 16,310 staff across 10 distinct corporate entities (seven medical/social welfare corporations, two educational foundations, and a hotel company). The group's stated mission is integrating "treating" (治す) and "preventing" (防ぐ) through a coordinated care continuum spanning acute hospitalization, psychiatric care, rehabilitation therapy (PT/OT/ST), residential nursing care, day care, home care, and care planning.

The business model is almost entirely insurance-reimbursement-driven: medical services are billed under Japan's national universal health insurance system, while nursing-care and elderly residential services are billed under the long-term care insurance system based on care-needs level. A third revenue stream comes from tuition and professional training fees at the group's universities, vocational schools, and international college. Patient-facing technology is minimal — limited to a My Number card-based insurance qualification verification system at Seiseikai Tokyo Hospital (June 2023) — and the group has no public APIs, SDKs, or digital platforms beyond dedicated recruitment websites and an online entry form. There is no evidence of proprietary technology, software products, or technology-licensing revenue; the offering is service delivery rather than product.

The group is led by Representative Director (理事長) Shintani Yukiyoshi. Recent corporate activity has focused on consolidation rather than expansion: two 2022 hospital mergers (Seiseikai Sapporo with Sapporo Minami; Aoi no Sono Sakura with Sakura Minami), one new facility opening (Aoi no Sono Niigata Kitaku, May 2022), one relocation (Aoi no Sono Shimonoseki, June 2023), a rebrand of Yasaka Kinen Hospital to Seiseikai Tokyo Hospital (December 2023), and the closure of Okayama Takebe Medical Welfare Specialized School (March 2024).

Name

Aoikai Group

Legal name

Aoikai Medical Corporation (、医療法人社団 葵会)

Website

https://aoikai.jp

Company type

Private

Founded year

1978

Operating status

Operating

Short description

Aoikai Group is a privately held Japanese healthcare conglomerate operating 134 hospitals, nursing care facilities, and educational institutions nationwide, serving elderly patients under national health and long-term care insurance with 16,310 staff.

Ownership category

akta.pro rank

Product category

Healthcare and Nursing Care Services

NAICS

Psychiatric and Substance Abuse Hospitals (622210), Nursing Care Facilities (Skilled Nursing Facilities) (62311)

SIC

Services-Hospitals (8060), Services-Skilled Nursing Care Facilities (8051)

akta.pro primary industry

Inpatient Psychiatric Hospitals (HLAFAHAH)

akta.pro secondary industry

Long-Term Care Nursing Homes (Custodial LTC) (HLADADAB)

Keywords

• Hospital management services
• Geriatric nursing care
• Medical rehabilitation services
• Psychiatric care services
• Healthcare professional education

Headquarters

HQ city

Chiba

HQ country

Japan

HQ region

Asia

Offices10 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Medical Services Revenue: Revenue from operating hospitals providing medical services covered by national health insurance, including inpatient care, outpatient clinics, and specialized departments such as psychiatry, internal medicine, and rehabilitation.
2. Nursing Care Facility Services: Revenue from nursing care insurance services at geriatric health facilities (介護老人保健施設), including residential care, short-term stays, and day care (通所リハビリテーション), billed through long-term care insurance.
3. Educational Services: Revenue from operating universities, vocational schools, and training institutions for healthcare professionals including nurses and medical technicians.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Aoikai Group operates 134 healthcare, nursing care, educational, and welfare facilities across Japan, providing an integrated care continuum spanning acute hospital medical services, psychiatric care, rehabilitation therapy (physical, occupational, and speech-language therapy), geriatric nursing care facilities (老健), home visiting nursing, day care services, disability welfare employment support, and healthcare professional education through universities and vocational schools.

Product overview

Aoikai Group is a large-scale Japanese healthcare and nursing care conglomerate operating 134+ facilities nationwide across multiple business segments: (1) Hospitals — including general acute care, psychiatric, and rehabilitation hospitals such as AOI Universal Hospital, AOI International Hospital, AOI Hachioji Hospital, Seiseikai Tokyo Hospital, Seiseikai Sapporo Hospital, Hieda Hospital, and multiple others totaling approximately 6,500 beds across the group; (2) Nursing Care Facilities (老健) — the 'Aoi no Sono' brand of approximately 70+ geriatric health care facilities offering residential care, short-term stays, and day rehabilitation services, with facilities such as Aoi no Sono Sakura (200 beds), Aoi no Sono Mihama (120 beds), Aoi no Sono Shimonoseki (96 beds), and many others nationwide; (3) Welfare Services — disability welfare facilities including Hieda Factory (employment transition support), Hieda Support Center (designated consultation support), and dementia day care programs; (4) Home Healthcare — home visiting nursing stations and home care support services; (5) Education — medical universities, nursing schools, vocational schools, and international colleges; (6) Childcare — nurseries and childcare facilities; and (7) Hospitality — hotels and related services. The group employs over 16,310 staff and is headquartered in Kashiwa, Chiba Prefecture. Key digital platforms include dedicated recruitment sites for nursing care and rehabilitation professionals, and an online application system covering all 134 group facilities. A My Number insurance qualification verification system has been implemented at Seiseikai Tokyo Hospital for electronic medical record integration.

Differentiator

Problem solved

Functional benefit

Products and services

• Hospital Medical Services Inpatient and outpatient medical services delivered at 30+ hospitals across Japan, including general medicine, psychiatric care, internal medicine, and rehabilitation therapy, with approximately 6,500 hospital beds across the group (e.g., Seiseikai Tokyo Hospital with 280 beds, Hieda Hospital with 268 beds).
• Geriatric Nursing Care Facility Services (葵の園/Aoi no Sono) Residential care, short-term stays, day rehabilitation, and home care support services delivered at 80+ geriatric health facilities (介護老人保健施設/老健) under the Aoi no Sono brand across Japan, with total capacity of 9,000+ residents across locations such as Sakura (200 beds), Shimonoseki (96 beds), Mihama (120 beds), Hamano (100 beds), Midori-ku (78 beds), and Minami Boso (100 beds).
• Home Visiting Nursing Services (やさかのいぶき/Yasaka no Ibuki) Psychiatric specialist home visiting nursing station operated by Seiseikai Tokyo Hospital, providing home-based nursing care for patients with mental illness across the Kodaira area of Tokyo.
• Severe Dementia Day Care Services (重度認知症デイケア 向日葵/Himawari) Specialized day care program for patients with severe dementia at Hieda Hospital, offering personalized activity programs, bathing services, and transportation assistance to support patients and reduce caregiver burden.
• Disability Welfare Employment Services (ひえだファクトリー/Hieda Factory) Employment transition support (A-type) and continued employment (B-type) disability welfare services operated by Aoikai Group, helping individuals with disabilities develop work skills and transition to general employment.
• Healthcare Education Services Healthcare professional education through Iryo Sosei University (医療創生大学), AOI International College (AOI国際学院), and previously operated vocational schools, training nurses and medical technicians.
• Welfare Equipment Rental and Housing Renovation Services (福祉用具貸与・住宅改修サービス) Rental and sales services for welfare equipment and home renovation support to enable elderly patients to live safely at home, offered across multiple Aoikai Group care facilities.
• Hotel and Hospitality Services (岡山国際ホテル/Okayama International Hotel) Hotel operations provided through the Okayama International Hotel subsidiary (岡山国際ホテル), supporting the group's hospitality offerings alongside its healthcare and welfare facilities.

Quantifiable outcome

• Elderly patients supported with rehabilitation and nursing care for return to home living

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered supporting.

• Dental Clinic O仓敷電子株式会社 (Ogura Dental Clinic)supportingOthersHieda Hospital has established a dental medical cooperation agreement with Ogura Dental Clinic ( Ogura Dental Clinic) for oral healthcare coordination for inpatients, as part of their oral management coordination initiative.
• Chiba Minato Hospital, Inage HospitalsupportingOthersAoinosono Mihama has cooperative relationships with Chiba Minato Hospital and Inage Hospital as designated medical institutions for referrals and coordinated care.

Scale indicators6 records

Recent moves12 records

Expansion highlights5 records

Direct peers

• Best Life Co. (ベストライフ): Listed Japanese operator of paid nursing homes and residential care facilities. Comparable to Aoikai's nursing care and assisted-living-elderly service offerings.
• SOMPO Holdings (SOMPO CareMessage): Major insurance/financial group whose SOMPO Care subsidiary runs one of Japan's largest nursing care facility networks. Comparable to Aoikai's Roken and elderly care service portfolio.
• Tokushukai Medical Group (徳洲会): Japan's largest private acute-care hospital network operating 70+ hospitals and many long-term care facilities nationwide. Comparable in scale, integrated care model, and nationwide geographic reach to Aoikai's 134-facility platform.
• Charm Care Corporation (チャーム・ケア): Listed Japanese nursing care operator focused on residential and day-care services for the elderly. Comparable to Aoikai's Aoi no Sono nursing care facility line.
• Nichii Gakkan (ニチイ学館): Listed Japanese healthcare services group operating nursing care, in-home care, medical services, and healthcare education/training. Most directly comparable to Aoikai due to its similarly integrated medical + nursing + education footprint.
• Message Co. (メッセージ): Listed Japanese nursing care provider operating residential and in-home services. Comparable to Aoikai's elderly care and home-visit nursing segments.
• Tsukui Holdings (ツクイ): Listed Japanese nursing care services company operating hundreds of in-home care offices and day-service facilities. Comparable to Aoikai's Aoi no Sono Roken and home-care service lines.

Broad incumbents

• IMS Group (イムスグループ): Large Japanese private hospital management group operating 130+ facilities including acute hospitals, Roken, and clinics. Comparable in scale and integrated medical-care model to Aoikai.
• Kameda Medical Center (亀田総合病院): Large private Japanese hospital group offering integrated acute, rehabilitation, and long-term care services. Comparable in integrated acute + rehabilitation + long-term care model.
• Saiseikai (済生会): Major Japanese social welfare medical corporation operating 80+ hospitals and welfare facilities nationwide. Comparable in integrated hospital + welfare footprint and Japanese public insurance reliance.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookaoikai.jp/facebook

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Subsidiaries10 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Aoikai Group