What IMS Group does

IMS Group is a private Japanese medical corporation (医療法人) founded in 1956 that operates an integrated network of more than 136 medical and welfare facilities concentrated primarily in the Kanto region, with additional presence in Hokkaido and Miyagi. It employs approximately 23,000 medical professionals and serves individual patients across the full continuum of care, including acute hospitalization, outpatient clinics, health screening, perinatal and maternity care, dementia treatment, rehabilitation, and nursing/elderly care services.

Its core operational platform is a hub-and-spoke hospital network anchored by tertiary hospitals with regional designations — Regional Emergency Medical Center, Regional Medical Support Hospital, and Dementia Medical Center — supplemented by satellite clinics, specialty centers, and care facilities. The group deploys advanced clinical technologies including ZAP-X radiosurgery, Pulse Field Ablation for cardiac electrophysiology, the CORI robotic-assisted surgery platform, AI-assisted endoscopy, and an in-house central laboratory operating under ISO 15189 accreditation. Technology adoption is targeted at clinical differentiation rather than at building a standalone software or product business.

IMS Group generates revenue through fee-for-service billing under Japan's universal health insurance system (acute care, outpatient procedures, screening packages), out-of-pocket and insurance-funded nursing care services, and premium/perinatal services not fully covered by public insurance. Its scale, multi-disciplinary coverage, and designated regional roles create a stable, recurring patient flow with limited dependency on any single payor or channel.

Name

IMS Group

Legal name

IMS Group (イムスグループ)

Website

https://imsgroup.jp

Company type

Private

Founded year

1956

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

IMS Group is a Japanese private medical corporation operating 136+ hospitals, clinics, and welfare facilities across the Kanto region, Hokkaido, and Miyagi, employing ~23,000 medical professionals and serving individual patients across acute care, outpatient, perinatal, dementia, rehabilitation, and nursing services.

Ownership category

akta.pro rank

Product category

Integrated Healthcare Services

NAICS

General Medical and Surgical Hospitals (6221), Nursing Care Facilities (Skilled Nursing Facilities) (623110), Nursing and Residential Care Facilities (623), Ambulatory Health Care Services (621)

SIC

Services-Hospitals (8060), Services-General Medical & Surgical Hospitals, Nec (8062), Services-Home Health Care Services (8082), Services-Nursing & Personal Care Facilities (8050), Services-Skilled Nursing Care Facilities (8051)

akta.pro primary industry

Integrated Delivery Networks (IDNs) & Multi-Hospital Systems (HLAFAAAC)

akta.pro secondary industries

Hospital-at-Home / Acute Care at Home Programs (HLAFAEAH), Skilled Nursing Facilities (SNF) (HLAFAFAB), Care Transitions Management (Hospital/SNF-to-Home) (HSABAIAC)

Keywords

• Integrated healthcare services
• Hospital and clinic operations
• Rehabilitation and recovery care
• Elderly nursing care
• Preventive health screenings

Headquarters

HQ city

Azusawa

HQ country

Japan

HQ region

Asia

Offices25 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Medical treatment and healthcare services: IMS Group generates revenue through direct operation of hospitals and medical facilities providing acute care, recovery care, chronic care, preventive medicine, and home healthcare services to patients covered by Japan's universal public health insurance system. Revenue is derived from medical treatment fees, examination fees, surgery fees, hospitalization fees, and other health insurance reimbursements.
2. Nursing care and welfare services: Revenue from operating nursing care facilities, elderly care homes, and rehabilitation centers. Services are covered under Japan's long-term care insurance (介護保険) system.
3. Health screening and preventive medicine: Revenue from IMS Me-Life Clinic health checkup services including comprehensive medical examinations, cancer screenings, and lifestyle disease management. These services include both insurance-covered and optional/self-pay examinations.
4. Perinatal and maternity services: Specialized childbirth and perinatal care services offered at facilities such as IMS Fujimi General Hospital's perinatal center, including natural delivery, painless delivery, and postpartum care services.

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels8 records

Core offering

IMS Group operates a vertically integrated network of 136+ hospitals, clinics, rehabilitation centers, elderly care facilities, and home care services across Japan, providing continuous medical and nursing care from acute hospitalization through recovery, chronic disease management, preventive medicine, and long-term care. Approximately 23,000 healthcare professionals deliver services reimbursed under Japan's universal health insurance system and long-term care insurance, supplemented by self-pay screening and conditioning services through the IMS Me-Life brand.

Product overview

IMS Group is a comprehensive medical and welfare services network operating 136+ facilities across Japan, providing integrated healthcare from acute care to home-based nursing care. The portfolio consists of the core hospital/facility network complemented by specialized sub-brands including IMS Me-Life Clinic for health checkups, IMS Information Bureau content platform, My Hospital bimonthly magazine, Smile Clinic for mental health, Golf Clinic for sports rehabilitation, and the Me-Life Conditioning service. Specialized treatment offerings include ZAP-X® stereotactic radiosurgery, pulse field ablation for atrial fibrillation, robotic knee replacement surgery (CORI), DWIBS breast cancer screening, and perinatal care centers. The group also operates elderly care facilities, rehabilitation hospitals, and home care services, supported by central kitchen operations using New Cook-Chill systems.

Differentiator

Problem solved

Functional benefit

Brands

• IMS Me-Life: Health checkup and medical examination clinic brand offering comprehensive health screenings and preventive medicine services
• IMS Library (IMS библиотека/IMS library)

Products and services

• Integrated Hospital and Medical Facility Network Direct operation of 136+ hospitals, clinics, and medical facilities across Japan providing acute care, recovery/rehabilitation care, chronic disease management, emergency medicine, and outpatient services under Japan's universal health insurance system. Network includes general hospitals such as Itabashi Chuo Sogo Hospital (36 departments, designated Tokyo Metropolitan Regional Emergency Medical Center handling 10,000+ ambulance acceptances per year) and specialty facilities.
• IMS Me-Life Clinic Preventive Health Screenings Network of preventive medicine clinics offering comprehensive health checkups (ningen dock), cancer screenings, lifestyle disease examinations, regular statutory health checkups, one-night two-day examinations (partnered with hotels), and conditioning services. IMS Me-Life Clinic Chiba operates gender-separated floors (female 23F, male 8F) with 300 examinations/day capacity using 3D mammography (Tomosynthesis), Dubbs Search painless MRI breast screening, AI-assisted endoscopy, and 80-slice CT scanners. Services include both insurance-covered and self-pay packages.
• Rehabilitation and Recovery Care Services Specialized rehabilitation hospitals providing intensive recovery care for cerebrovascular, orthopedic, and post-surgical patients. Includes IMS Yokohama Asahi Rehabilitation Hospital (120 beds, opened August 2024, the only rehabilitation hospital in Yokohama Asahi-ku area), IMS Sawara Rehabilitation Hospital (157 recovery beds plus 60 long-term care beds, with the Sawara Sky Garden rooftop rehabilitation walking course), and facilities offering cardiac rehabilitation, driving simulator-based return-to-driving assessment, and gait analysis via the Gait Judge wearable system.
• Long-Term Elderly Nursing Care (Roken) Services Nursing care health facilities (介護老人保健施設, roken) offering short-stay, day care, residential, and rehabilitation services for elderly patients under Japan's long-term care insurance (kaigo hoken) system. Sendai Aoba Royal Care Center provides 100 unit-type private rooms with 40-day service rehabilitation, international cuisine programs, dental/occupational therapy collaborations, and visiting rehabilitation. IMS Akabane offers an elderly care facility with dedicated concierge service.
• Perinatal and Maternity Care Services Hospital-based childbirth services including natural delivery, painless delivery, LDR (Labor, Delivery, Recovery) room delivery, midwife outpatient services, breastfeeding support, and postpartum care. The Perinatal Center at IMS Fujimi General Hospital opened March 2024 with 26 supporting departments providing safe and supportive childbirth care.
• Smile Clinic IMS Tokyo Occupational Mental Health Services Mental health clinic located in the Nihonbashi business district providing psychiatric consultation, adjustment disorder treatment, depression and anxiety therapy, and workplace-related mental health support for office workers. Also offers occupational mental health consultation contracts to nearby corporations. Opened July 2024.
• IMS Katsushika Heart Center Cardiology Services Cardiology center specializing in advanced catheter-based treatments including the introduction of Pulse Field Ablation for atrial fibrillation in November 2024 (90% first-treatment success for paroxysmal AF), in addition to other cardiac electrophysiology procedures.
• SMART Center High-Precision Radiation Therapy High-precision radiation therapy center at Shin-Matsudo Central General Hospital providing Japan's third operational ZAP-X stereotactic radiosurgery system for brain tumors and intracranial diseases, using a self-shielded compact linear accelerator with gyroscopic gantry. The SMART Center also offers MRI-guided linear accelerator treatment and PET-CT imaging.
• Robotic-Assisted Knee Replacement Surgery (CORI System) Next-generation knee replacement surgery using the CORI robotic surgery support system at Takashimadaira Central General Hospital's Orthopedic and Artificial Joint Center. The system uses infrared cameras for 3D spatial recognition with sub-millimeter accuracy, supporting precise implant placement with reported 25-year durability and 90%+ success rate.
• Kasukabe Central General Hospital Ophthalmology Services Ophthalmology center at Kasukabe Central General Hospital offering anterior segment OCT (optical coherence tomography) for glaucoma screening and eye disease diagnosis. Hospital is International Osteoporosis Foundation (IOF) certified (2025) for osteoporosis treatment meeting international bone health standards.
• Kita-Odawara Hospital Psychiatric and Dementia Services Psychiatric hospital designated as a coordinating-type dementia medical center by Kanagawa Prefecture, providing specialized dementia diagnosis and psychiatric care. Includes the first psychiatric pharmacy therapy certified pharmacist within IMS Group.
• IMS Group Home Healthcare Services Home-based medical and nursing services including visiting doctor services, home-visit nursing, home rehabilitation, and chronic disease home management for patients recovering at home or requiring ongoing support. Supplemented by New Cook-Chill centralized meal preparation for in-home care nutrition.

Quantifiable outcome

• Itabashi Chuo Sogo Hospital handles over 10,000 ambulance acceptances and approximately 18,500 emergency patients per year (2023)
• +4 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Eight partnerships are on record, tiered minor and core.

• AAR-Japan (認定特定非営利活動法人AAR-Japan)minorStrategic or Co-development Partner · 11 May 2022IMS Group donated 2,066,536 JPY collected from 43 facilities and 1,088 staff members plus volunteers to AAR-Japan through IIMA (IMS International Medical Support Organization) for humanitarian and medical support for Ukrainian refugees.
• IIMA (IMS International Medical Support Organization / IMS国際医療支援機構)minorStrategic or Co-development Partner · 11 May 2022International medical support organization established by IMS Group to coordinate international humanitarian aid. Channeled donations from IMS staff to AAR-Japan for Ukraine refugee support.
• Aichi Gakuin University / Local dental clinicsminorStrategic or Co-development PartnerSendai Aoba Royal Care Center collaborates with dental professionals for oral function evaluation and treatment for elderly residents, part of interdisciplinary care team.
• Driving school partnersminorChannel Partner/ Reseller/ DistributorIMS Sawara Rehabilitation Hospital partners with local driving schools for practical driving training and on-road instruction for patients recovering driving ability, following simulator-based assessment.
• Sensity Tower (Chiba)minorOthersIMS Me-Life Clinic Chiba operates within Sensity Tower office building in central Chiba city, with female floor on 23F and male floor on 8F.
• Tokyo Metropolitan Government / Tokyo Fire DepartmentcoreStrategic or Co-development PartnerItabashi Chuo Sogo Hospital collaborates with Tokyo Metropolitan Government and Tokyo Fire Department for emergency medical transport, disaster response, and community health programs. Designated as Regional Emergency Medical Center and Disaster Base Hospital.
• Local businesses and companies (Nihonbashi area)minorStrategic or Co-development PartnerSmile Clinic IMS Tokyo, located in the Nihonbashi business district, provides mental health services to employees of nearby corporations and offers consultation contracts for corporate occupational health management.
• I-Cell Corporation (株式会社アイセル)minorOthersI-Cell Corporation publishes the 'My Hospital' bimonthly free magazine for IMS Group, hosting PDF versions on its website.

Scale indicators15 records

Recent moves13 records

Expansion highlights4 records

Market position

Competitive moat5 records

Key highlights7 records

Customer concentration

• Xims.gr.jp/conditioning
• YouTubeyoutu.be/2vzQGPrxUNA
• Facebooks.lmes.jp/landing-qr/2000250427-OajRNZvY?uLand=WIKY1p
• LinkedIntheworldfolio.com/interviews/-building-future-of-integrated-healthcare-how-ims-group-supports-japans-aging-society/7091

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries16 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 IMS Group