Institut Mutualiste Montsouris

What Institut Mutualiste Montsouris does

Institut Mutualiste Montsouris (IMM) is a non-profit acute care hospital (Établissement de Santé Privé d'Intérêt Collectif, ESPIC) located at 42 boulevard Jourdan in Paris's 14th arrondissement, affiliated with the Mutualité Française network and governed by MFPASS. Founded in 1999, the 251–500 employee facility operates as a single comprehensive care campus open 24/7 with a full emergency department, organized around two clinical pillars: a Surgery Department covering ten subspecialties (cardiac, digestive, gynecological, maxillofacial, bariatric, ophthalmological, orthopedic, thoracic, urological, vascular) and a Medical Specialties Department covering eighteen subspecialties (anesthesiology, cardiology, oncology, dermatology, diabetes care, dialysis, pain management, hepatology, maternity, psychiatry, pulmonology, rheumatology, etc.). Supporting infrastructure includes radiology/imaging, medical and anatomical pathology laboratories, pharmacy, intensive care, and a maternity ward. The hospital also runs specialized named institutes — Institut du Thorax Curie-Montsouris (a joint venture with Institut Curie for thoracic oncology), Institut des Maladies Valvulaires, Institut de la Prostate, Centre de l'Obésité, and a reference center for rare gynecological malformations — alongside a Maxillofacial Surgery Department established as a standalone unit in 2023.

Technologically, IMM operates hybrid operating rooms, robotic surgery capability, interventional radiology, 3D-printed personalized cutting guides for orthognathic surgery, piezoelectric ultrasonic bone cutting instruments, and microsurgical free-flap facial reconstruction. Digital infrastructure includes a Health Data Warehouse operational since 2017, an online admission and pre-registration system, a free patient mobile application (launched 2022), Doctolib integration for online appointment booking, and online bill payment via Payzen. AI capability is presently limited to a single research-stage application: the COROSCAN-IA study for automated anatomical and functional classification of coronary arteries in cardiac CT. Patient experience innovations include virtual reality, medical hypnosis, and musicotherapy for pre-operative anxiety reduction (launched 2023).

Commercially, IMM generates revenue through French social security reimbursements (Sécurité sociale), supplementary private insurance, and patient co-payments. As a Sector 1 ESPIC, it does not practice balance billing (pas de dépassement d'honoraires) for most covered procedures; cosmetic procedures are not reimbursed. A secondary revenue stream comes from clinical research funding, with IMM serving as both sponsor and investigator site across more than 80–100 active trials in partnership with AP-HP, Institut Gustave Roussy, multiple French university hospitals, and pharmaceutical and medtech companies. The hospital is ranked in Newsweek's World's Best Hospitals 2026 and in Le Point's annual ranking, and holds the Haute Autorité de Santé (HAS) "Haute qualité des soins" certification.

Name

Institut Mutualiste Montsouris

Legal name

Institut Montsouris

Website

https://imm.fr

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

251–500 employees

Short description

Institut Mutualiste Montsouris is a non-profit ESPIC acute care hospital in Paris's 14th arrondissement offering comprehensive medical and surgical specialties, maternity, oncology, and maxillofacial surgery, serving individual patients through the French public healthcare reimbursement system with no balance billing.

Ownership category

akta.pro rank

Product category

Hospital Healthcare Services

NAICS

General Medical and Surgical Hospitals (6221)

SIC

Services-General Medical & Surgical Hospitals, Nec (8062)

akta.pro primary industry

Ambulatory Specialty Clinics (Multi-Specialty & Single-Specialty) (HLAFABAA)

akta.pro secondary industry

Hospital-Based Palliative Care (Inpatient Consult Services) (HLADAHAG)

Keywords

• Acute care hospital
• Surgical specialty services
• Maternity healthcare
• Maxillofacial surgery
• Clinical research programs

Headquarters

HQ city

Paris

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Healthcare services revenue: IMM operates as an ESPIC (Etablissement de Santé Privé d'Intérêt Collectif) - a non-profit private healthcare facility of collective interest. Revenue is generated through public healthcare insurance reimbursements (Sécurité sociale), supplementary insurance coverage, and patient co-payments. No balance billing (pas de dépassement d'honoraires) for most services.
2. Clinical research funding: Government and institutional funding for clinical trials where IMM serves as sponsor or investigator site, from organizations including AP-HP, university hospitals, and pharmaceutical companies

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

Institut Mutualiste Montsouris is a non-profit ESPIC general hospital in Paris providing comprehensive multi-specialty inpatient and outpatient medical, surgical, and maternity care across 28 specialties plus dedicated institutes for thoracic, valvular, prostate, and obesity conditions. Services include diagnostic imaging, clinical biology, pharmacy, anatomopathology, dialysis, intensive care, pain management, and an active clinical research program with over 80 ongoing trials, all billed at regulated French public hospital rates with no balance billing.

Product overview

Institut Mutualiste Montsouris (IMM) is a multi-specialty hospital (Établissement de Santé Privé d'Intérêt Collectif - ESPIC) in Paris 14th arrondissement, operating as a single unified healthcare facility rather than a platform architecture. The hospital is organized around two core clinical pillars — a Surgery Department (covering 10 subspecialties: cardiac, digestive, gynecological, maxillofacial, bariatric, ophthalmological, orthopedic, thoracic, urological, and vascular surgery) and a Medical Specialties Department (covering 18 subspecialties including cardiology, oncology, anesthesiology, dialysis, pain management, hepatology, maternity, psychiatry, pulmonology, and rheumatology). These are supported by diagnostic and therapeutic services including Medical Imaging/Radiology, Medical Laboratory, Pharmacy, and Anatomopathology. IMM also operates several named institutes and centers: the Institut du Thorax Curie-Montsouris (joint with Institut Curie for thoracic oncology), Institut des Maladies Valvulaires (heart valve diseases), Institut de la Prostate, Centre de l'Obésité, Centre de Référence des Malformations Gynécologiques Rares, Centre de Prévention Cardio-Vasculaire, and a dedicated Maxillofacial Surgery Department (Institut Maxillo-Facial de Paris). The hospital's digital services include an Online Admission System, Online Payment via Payzen, an Ambulatory Care program, a Health Data Warehouse (Entrepôt de Données de Santé), and an active Clinical Research program with over 80 ongoing trials. Additionally, the hospital has introduced patient experience innovations such as virtual reality, medical hypnosis, and musicotherapy for pre-operative anxiety reduction.

Differentiator

Problem solved

Functional benefit

Brands

• Institut du Thorax Curie-Montsouris: Specialized institute for thoracic conditions in partnership with Institut Curie
• Institut des Maladies Valvulaires
• Institut de la Prostate
• Centre de l'obésité
• Centre de référence des malformations gynécologiques rares

Products and services

• Surgery Department Comprehensive surgical department covering 10 subspecialties at IMM: cardiac, digestive, gynecological, maxillofacial, bariatric, ophthalmological, orthopedic, thoracic, urological, and vascular surgery.
• Medical Specialties Department Internal medicine department with 18 subspecialties including anesthesiology, cardiology, oncology, dermatology, diabetes care, dialysis, pain management, hepatology, maternity, psychiatry, pulmonology, and rheumatology.
• Maternity Services Full-service maternity ward in Paris 14th arrondissement offering obstetrics, anesthesia, obstetric ultrasound, smoking cessation, and acupuncture services for expectant mothers.
• Assisted Reproductive Medicine (PMA/AMP) Medically assisted reproduction services including in-vitro fertilization, with dedicated medical team and laboratory.
• Medical Imaging and Radiology Full-service diagnostic and interventional radiology department serving all hospital departments.
• Medical Laboratory Clinical biology laboratory providing diagnostic testing services across all hospital departments.
• Institut du Thorax Curie-Montsouris Specialized institute jointly operated with Institut Curie, focused on thoracic oncology, lung cancer, and chest disease diagnosis and treatment.
• Institut des Maladies Valvulaires Specialized institute dedicated to the diagnosis and treatment of heart valve diseases.
• Institut de la Prostate Dedicated prostate disease institute offering comprehensive diagnostic and treatment services for prostate conditions.
• Centre de l'Obésité (Obesity Center) Multidisciplinary obesity center offering surgical and medical management of obesity, including bariatric surgery.
• Centre de Référence des Malformations Gynécologiques Rares Reference center for rare gynecological malformations, providing specialized surgical care.
• Centre de Prévention Cardio-Vasculaire Cardiovascular prevention center offering screening and preventive care services.
• Maxillofacial Surgery Department Maxillofacial surgery department covering orthognathic surgery, functional rhinoplasty, facial reconstruction, ear reconstruction (otopoiesis), cleft lip/palate sequelae, oral surgery, and dental implants; functions as a referral center for revisional orthognathic surgery.
• Pain Management Services Dedicated department for chronic pain assessment and management across all hospital services.
• Dialysis Services Renal dialysis unit providing hemodialysis services for patients with kidney failure.
• Reanimation and Continuous Care Department Intensive care and continuous monitoring unit for critically ill patients.
• Pharmacy Department Hospital pharmacy providing medication management, dispensing, and clinical pharmacy services.
• Anatomopathology Department Pathology laboratory for tissue analysis and diagnosis, supporting all surgical departments.

Quantifiable outcome

• HAS 'Haute qualité des soins' certification - highest level of healthcare quality certification in France
• +3 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

AI capability6 records

Feature5 records

Partnerships

Six partnerships are on record, tiered minor and core.

• MFPASS (Mutuelle Familiale de Prévoyance et d'Action Sociale)minorOthersParent organization and registered office holder. MFPASS is the mutual benefit organization that operates IMM, providing the institutional framework and healthcare mission. Headquarters located at 3 square Max Hymans, 75748 Paris cedex 15.
• Hôpital Necker-Enfants Malades (AP-HP)coreStrategic or Co-development PartnerCollaboration with pediatric hospital for maxillofacial surgery. IMM's maxillofacial surgeons Dr. Julien Davrou and Dr. Nolwenn Lavagen previously trained at Necker, and the collaboration continues for adult patients with congenital conditions previously managed in pediatric settings. Close working relationship with France's leading pediatric center.
• AP-HP (Assistance Publique - Hôpitaux de Paris)coreStrategic or Co-development PartnerMajor public hospital system in Paris. IMM participates in numerous clinical trials as investigator site under AP-HP as sponsor. Collaborative research relationship across multiple specialties including anesthesia, cardiac surgery, digestive surgery, hepatology, oncology, and others.
• Institut Gustave RoussyminorStrategic or Co-development PartnerFrance's leading cancer center. Collaboration on cancer clinical trials (PROWESs, PRISM-POrTAL, CARE 1) and research programs in oncology.
• CHU de Lille, CHU Dijon, CHU de Rennes, Hospices Civils de Lyon, CHU de Caen, CHU de GrenobleminorStrategic or Co-development PartnerVarious French university hospitals collaborating as clinical trial sponsors with IMM as investigation site across cardiology, oncology, digestive surgery, and other specialties.
• Pharmaceutical and medical device companiesminorOthersNumerous pharma and medtech companies (Abbott, Medtronic, Roche, Bristol Myers Squibb, AstraZeneca, Janssen, etc.) partnering as clinical trial sponsors with IMM as investigation site. Relationships governed by standard clinical trial agreements.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Institut Gustave Roussy: France's leading cancer center and an active IMM research partner on thoracic and oncology trials (PROWESs, PRISM-POrTAL, CARE 1). Comparable as a leading French specialty institution collaborating with IMM on cancer care delivery and clinical research.
• Groupe Hospitalier Diaconesses Croix Saint-Simon: ESPIC hospital group in Paris operating under the same non-profit collective-interest model as IMM, providing multi-specialty acute care and surgery — comparable in governance, mission and care-mix to IMM.
• Fondation Ophtalmologique Adolphe de Rothschild: ESPIC-status private non-profit hospital in Paris focused on ophthalmology, neurology and head-and-neck specialties. Comparable to IMM as a Paris-based non-profit specialty hospital under the same sector-1 reimbursement regime.
• Hôpital Saint-Joseph (Paris): ESPIC non-profit hospital in Paris offering multi-specialty medical and surgical care with comparable size, mutualist heritage and no-balance-billing model — the closest direct analogue to IMM within the Île-de-France non-profit hospital segment.
• Hôpital Necker-Enfants Malades (AP-HP): AP-HP pediatric hospital and explicit IMM collaboration partner for adult maxillofacial surgery of patients with congenital conditions. Comparable in Paris-based specialty tertiary care and the academic clinical-trial ecosystem IMM participates in.
• Hôpital Foch (Suresnes): ESPIC multi-specialty hospital in the Paris region with a comparable non-profit public-interest status, similar broad surgical/medical offering and academic partnerships; directly comparable to IMM on governance, scale and tariff structure.

Broad incumbents

• Hôpital Pitié-Salpêtrière (AP-HP): Largest AP-HP teaching hospital in Paris with a comprehensive multi-specialty medical and surgical offering. Comparable as a major Île-de-France acute-care competitor and academic research counterparty, but operates on a much larger public-hospital scale.
• Hôpital Européen Georges-Pompidou (AP-HP): AP-HP multi-specialty hospital in Paris with strong cardiac, oncology and surgical programs. Comparable as a large Paris tertiary-care competitor overlapping with IMM's cardiac, oncology and digestive surgery services.
• Hôpital Cochin (AP-HP): AP-HP Paris hospital offering a comparable mix of multi-specialty medicine, surgery and maternity. Competes with IMM for complex referrals and clinical-trial activity in the same metropolitan area.

Regional players

• CHU de Lille: Major French university hospital center that collaborates with IMM as a clinical-trial sponsor across cardiology, oncology and digestive surgery. Comparable as a large French public academic hospital with overlapping research and specialty surgical activity, but based in northern France.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCs9f7MEh0cBlGWxIn9noang
• Facebookfacebook.com/InstitutMutualisteMontsouris
• LinkedInlinkedin.com/in/h%C3%B4pital-institut-mutualiste-montsouris-69a59113a
• Instagraminstagram.com/hopitalmontsouris
• Xx.com/immontsouris

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Institut Mutualiste Montsouris