Medical Association

What Medical Association does

Medical Association (legal name: 医療法人社団 医凰会, "IOUKAI") is a private Japanese medical corporation founded in 1992 and headquartered in Tokorozawa, Saitama Prefecture. IOUKAI operates an integrated network of 11 healthcare and welfare facilities across Saitama Prefecture under a self-described "three harmonies" (三つの和) philosophy that ties together medical, nursing, and welfare services into a single organizational umbrella. The facility portfolio comprises two general hospitals (Namiki Hospital in Tokorozawa and Saitama Iwatsuki Hospital in Iwatsuki Ward), three outpatient clinics (Haruno Clinic, Omiya Dermatology Clinic, and Higashikawaguchi Home Care Clinic), a residential care house (Care House Sayamagaoka), a day-service and short-stay facility (Shiawase Hanazono), a visiting nursing station (Home Nursing Station Magokoro), two care-management offices (Home Care Support Center Kakehashi and Care Plan Office Sakura), and Group Home Himawari scheduled to open in 2026 in Minuma Ward, Saitama City. The workforce is in the 251–500 range and the organization is privately held with no external investors or parent company; it is affiliated with the Houou-kai Group under shared management lineage.

Name

Medical Association

Legal name

医療法人社団　医凰会

Website

https://ioukai.or.jp

Company type

Private

Founded year

1992

Operating status

Operating

Headcount range

251–500 employees

Short description

Medical Association (医療法人社団 医凰会) is a private Japanese medical corporation operating 11 integrated hospitals, clinics, residential care facilities, and home-care services across Saitama Prefecture, serving elderly and mobility-limited patients through Japan's national health and long-term care insurance systems.

Ownership category

akta.pro rank

Product category

Medical and Nursing Care Services

NAICS

Nursing Care Facilities (Skilled Nursing Facilities) (62311), Services for the Elderly and Persons with Disabilities (62412), Ambulatory Health Care Services (621)

SIC

Services-Home Health Care Services (8082), Services-Hospitals (8060), Services-Skilled Nursing Care Facilities (8051)

akta.pro primary industry

Hospital-Based/Home Health System-Affiliated Skilled Home Health (HLADAFAB)

akta.pro secondary industries

Medical Adult Day Health Centers (ADHC) (HLADAIAA), Home Health Aide (HHA) Services (Medically Directed) (HSABACAB), Subacute Care Units (High-Acuity Transitional Care) (HLADADAC)

Keywords

• Home medical care
• Elderly nursing care
• Hospital clinic services
• Group home care
• Home visit nursing

Headquarters

HQ city

Tokorozawa

HQ country

Japan

HQ region

Asia

Offices10 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Supply Chain

Revenue model

1. Medical and Healthcare Services: Revenue generated from providing home visit medical services, hospital care, clinic services, nursing care facilities, and welfare services to patients covered under Japan's national health insurance system and long-term care insurance system.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Medical Association (IOUKAI) provides integrated medical and long-term care services in Saitama, Japan through 11 facilities. Offerings span acute hospital care, outpatient clinics (including dermatology), home-visit medical care, home nursing, elderly group home residence, and in-home care planning. The organization serves individual patients and families, particularly elderly and chronic-care populations, under the Japanese public health and long-term care insurance systems.

Product overview

Medical Association (、医療法人社団医凰会) is a Japanese medical corporation operating a network of healthcare and nursing care facilities across Saitama Prefecture. The organization operates as a unified medical group consisting of two general hospitals (並木病院 and さいたま岩槻病院), three outpatient clinics (春野クリニック, 大宮皮膚科クリニック, and 東川口ホームケアクリニック), residential care facilities including ケアハウス狭山ヶ丘 and しあわせ花園 (day service/short stay), a newly opening group home (グループホームひまわり in 2026), home nursing services (訪問看護ステーションまごころ), home care support (在宅介護支援センターかけはし), and care management services (居宅介護支援事業所さくら). The organization emphasizes integrated medical-nursing-care services, providing home-based medical care, nursing, and welfare services to support elderly and disabled individuals in their communities. The group is affiliated with 鳳凰会グループ (Houou-kai Group).

Differentiator

Problem solved

Functional benefit

Products and services

• Saitama Iwatsuki Hospital (埼玉いわつき病院) Acute care hospital operated by IOUKAI in Saitama Prefecture providing inpatient and outpatient medical services to local patients.
• Namiki Hospital (並木病院)
• Haruno Clinic (はるのクリニック)
• Omiya Dermatology Clinic (大宮皮フ科クリニック)
• Higashikawaguchi Home Care Clinic (東川口ホームケアクリニック)
• Care House Sayamagaoka (介護ハウスさやまがおか)
• Shiawase Hanazono (しいあわせ花園)
• Group Home Himawari (グループホームひまわり)
• Home Nursing Station Magokoro (訪問看護ステーションまごころ)
• Home Care Support Center Kakehashi (居宅介護支援センターかけはし)
• Care Plan Office Sakura (居宅介護支援事業所さくら)
• Home Medical Care / Visit Medicine (訪問診療)

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Houou-kai GroupminorOthersRelated organizational group. Houou-kai Group operates independently and shares the same founder/management lineage with IOUKAI. Both organizations appear to be under common leadership, with IOUKAI facilities being referenced on the Houou-kai Group website for recruitment purposes.

Scale indicators2 records

Recent moves3 records

Expansion highlights3 records

Direct peers

• Aijinkai Healthcare Corporation (愛仁会): Integrated Japanese medical corporation operating acute hospitals, rehabilitation facilities, and elder care services. Comparable combination of hospital-based acute care and community-based long-term care under one corporate entity.
• IMS Group: Japanese private hospital and healthcare group operating hospitals, clinics, and elder care facilities under a federated corporate structure. Highly comparable to IOUKAI's hospital-plus-elder-care model with regional density.
• Zenkoukai (善光会): Tokyo-area integrated elder care corporation operating nursing homes, group homes, day services, and home-visit nursing with a hospital-affiliated structure. Highly comparable to IOUKAI's elder care and home health mix.
• Kameda Medical Center: Integrated private medical corporation operating a flagship general hospital plus affiliated clinics and elder care programs. Comparable vertical integration of acute and long-term care under one corporate umbrella.
• Tokushukai Medical Group: Japan's largest private hospital network operating acute hospitals, clinics, and elder care facilities across multiple prefectures. Comparable to IOUKAI as a multi-facility, integrated medical corporation with both hospital and long-term care services.
• Tsukui Group (ツクイグループ): Listed Japanese operator of day service centers, group homes, and home care services with significant regional density. Comparable as a multi-facility elder care and home health platform.
• Houou-kai Group (鳳凰会グループ): Affiliated Japanese medical group sharing founder/management lineage with IOUKAI, operating its own network of hospitals and elder care facilities. Closely related peer with overlapping governance and similar integrated care delivery model.

Broad incumbents

• Nichii Gakkan (ニチイ学館): Large Japanese healthcare services company providing home care, day services, and medical staffing nationwide. Comparable home health and elder care services, though broader and more corporate than IOUKAI.
• Sogo Medical Group: Japanese medical group federation operating hospitals and clinics across multiple regions. Comparable multi-facility private medical corporation model, though generally larger in scale than IOUKAI.

Emerging players

• Asai Geriatric Health Services (あさいクリニック系): Japanese home-visit medical and elder care clinic networks focusing on home medical care. Comparable core service line of home visit medical for elderly patients, though smaller and less integrated than IOUKAI.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries11 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 Medical Association