# Top 30 critical infrastructure operators in the Val-de-Marne department

Tamtam tracks 42 critical infrastructure operators headquartered in the Val-de-Marne department. This list ranks the 30 largest by number of employees on LinkedIn, led by LCL, Gustave Roussy and Centre Hospitalier Intercommunal de Créteil. Their median headcount is 335. Half of them were founded in 1984 or later. The most common headquarters are Créteil (5), Charenton-le-Pont (3) and Villejuif (3).

The companies in Val-de-Marne primarily include large- and mid-sized organizations in critical infrastructure sectors such as healthcare, banking, and government administration. Notable examples include LCL, a banking service provider with over 16,000 employees, Gustave Roussy, a leading cancer center, and Corsair, a French airline specializing in international long-haul flights. This selection also features ADEF RESIDENCES, which manages medico-social and health establishments.

A significant concentration of these entities is found in the healthcare sector, with several large hospitals and health-related service providers. For instance, Centre Hospitalier Intercommunal de Créteil, HOPITAL SAINT CAMILLE, and Hôpitaux de Saint-Maurice are all substantial healthcare institutions operating within the department.

🇫🇷 Val-de-Marne · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [LCL](https://www.tamtam.ai/c/lcl) (lcl.fr)<br>Provides banking services for individuals, professionals, businesses, and private banking clients through a national network of branches and employees. | Banking | 🇫🇷 Villejuif | 16,616 |  |
| 2 | [Gustave Roussy](https://www.tamtam.ai/c/gustave-roussy) (gustaveroussy.fr)<br>A leading cancer center in Europe, specializing in prevention, treatment, research, and education for patients, with two locations in Grand Paris | Hospitals and Health Care | 🇫🇷 Villejuif | 2,076 |  |
| 3 | [Centre Hospitalier Intercommunal de Créteil](https://www.tamtam.ai/c/centre-hospitalier-intercommunal-de-creteil) (chicreteil.fr)<br>A hospital in Créteil specializing in gynecology, obstetrics, pediatrics, pulmonology, ophthalmology, and ENT services, known as "CHIC" | Hospitals and Health Care | 🇫🇷 Créteil | 1,127 | 1937 |
| 4 | [Corsair](https://www.tamtam.ai/c/corsair-rungis) (flycorsair.com)<br>operates as a French airline specialized in international long-haul flights to various global destinations, offering multiple booking classes and customer services. | Airlines and Aviation | 🇫🇷 Rungis | 1,073 | 1981 |
| 5 | [ADEF RESIDENCES](https://www.tamtam.ai/c/adef-residences) (adef-residences.com)<br>Management and creation of medico-social and health establishments providing adapted living environments for elderly and disabled people. | Individual and Family Services | 🇫🇷 Ivry-sur-Seine | 883 | 1993 |
| 6 | [BPCE Lease](https://www.tamtam.ai/c/bpce-lease) (bpce.fr)<br>Financing solutions for vehicles, real estate, and equipment through leasing. Support for energy transition and renewable energy projects. | Banking | 🇫🇷 Charenton-le-Pont | 654 |  |
| 7 | [HOPITAL SAINT CAMILLE](https://www.tamtam.ai/c/hopital-saint-camille) (ch-bry.com)<br>Located in Bry-sur-Marne, this hospital serves patients from Val-de-Marne, Seine-Saint-Denis, and Seine-et-Marne, offering a wide range of medical specialties | Hospitals and Health Care | 🇫🇷 Bry-sur-Marne | 600 | 1936 |
| 8 | [BPCE Payment Services](https://www.tamtam.ai/c/bpce-payment-services) (groupebpce.com)<br>Payment processing company with expertise in cards, supporting banks, financial institutions, and payment service providers, managing a significant share of France's payment activities | IT Services and IT Consulting | 🇫🇷 Charenton-le-Pont | 588 |  |
| 9 | [Hôpitaux de Saint-Maurice](https://www.tamtam.ai/c/hopitaux-de-saint-maurice) (hpevm.fr)<br>A public hospital specializing in rehabilitation, psychiatry, addiction treatment, chronic renal disease, obstetrics, gynecology, and neonatology, also offering higher education programs | Hospitals and Health Care | 🇫🇷 Saint-Maurice | 559 |  |
| 10 | [Centre Hospitalier Intercommunal de Villeneuve-Saint-Georges](https://www.tamtam.ai/c/centre-hospitalier-intercommunal-de-villeneuve-saint-georges) (chiv.fr)<br>Regional hospital providing specialized medical care and recognized expertise across multiple healthcare sectors for local and referral patients. | Hospitals and Health Care | 🇫🇷 Villeneuve-Saint-Georges | 441 | 1971 |
| 11 | [PHOENIX Pharma France](https://www.tamtam.ai/c/phoenix-pharma-france) (phoenixpharma.fr)<br>Pharmaceutical wholesaler providing over 40,000 products and dedicated services to 4,000 pharmacies, ensuring timely patient treatment access. | Wholesale Drugs and Sundries | 🇫🇷 Créteil | 417 | 1994 |
| 12 | [Assurance Maladie du Val-de-Marne (CPAM)](https://www.tamtam.ai/c/assurance-maladie-du-val-de-marne-cpam) (ameli.fr)<br>Manages social security, protecting 1.4 million beneficiaries. Administers health, maternity, work accidents, and occupational diseases benefits, distributing over 3 billion euros annually. | Government Administration | 🇫🇷 Créteil | 397 | 1945 |
| 13 | [DIRISI : Direction Interarmées des Réseaux d'Infrastructure et des Systèmes d'Information](https://www.tamtam.ai/c/dirisi-direction-interarmees-des-reseaux-d-infrastructure-et-des-systemes-d) (contractuels.civils.defense.gouv.fr)<br>Manages IT systems, networks, and telecommunications for the Ministry of Armed Forces, ensuring cybersecurity, procurement, and software development for military operations. | Software Development | 🇫🇷 Le Kremlin-Bicêtre | 361 | 2003 |
| 14 | [Grand Paris Sud Est Avenir // GPSEA](https://www.tamtam.ai/c/grand-paris-sud-est-avenir-gpsea) (sudestavenir.fr)<br>Grand Paris Sud Est Avenir is a public entity in the Greater Paris area, promoting development through urban, rural, and green spaces, with a focus on infrastructure, healthcare, and education | Government Administration | 🇫🇷 Créteil | 352 | 2016 |
| 15 | [Foliateam](https://www.tamtam.ai/c/foliateam) (foliateam.com)<br>FOLIATEAM offers secure cloud telephony, IT, and cybersecurity solutions for businesses and public organizations, providing reliable networks, cloud services, and tailored support | IT Services and IT Consulting | 🇫🇷 Saint-Maur-des-Fossés | 335 | 2002 |
| 16 | [Hôpital national d'instruction des armées Bégin](https://www.tamtam.ai/c/hopital-national-d-instruction-des-armees-begin) (hiabegin.sante.defense.gouv.fr)<br>Provides medical and surgical care for military personnel and civilians, specializing in infectious diseases, and participating in public health services with no additional fees. | Hospitals and Health Care | 🇫🇷 Saint-Mandé | 312 | 1856 |
| 17 | [Société Générale Factoring](https://www.tamtam.ai/c/societe-generale-factoring) (societegenerale.com)<br>With over 40 years of experience, this company specializes in receivables and payables financing, management, collection, and guarantee services for various types of clients | Financial Services | 🇫🇷 Fontenay-sous-Bois | 310 | 1974 |
| 18 | [BPCE Factor](https://www.tamtam.ai/c/bpce-factor) (factor.bpce.fr)<br>For over 35 years, this company provides tailored factoring solutions (financing, credit insurance, collections) to support the growth of SMEs in France and internationally | Banking | 🇫🇷 Charenton-le-Pont | 306 | 1984 |
| 19 | [La Compagnie](https://www.tamtam.ai/c/la-compagnie) (lacompagnie.com)<br>Airline providing all-business-class flights on Airbus A321neo aircrafts, with flat seats, entertainment, Wi-Fi, and seasonal cuisine. | Airlines and Aviation | 🇫🇷 Arcueil | 252 | 2013 |
| 20 | [Arkéa Banking Services](https://www.tamtam.ai/c/arkea-banking-services) (arkea-banking-services.com)<br>Providing white-label banking services and managing banking solutions for financial institutions, payment establishments, and fintech companies. | Banking | 🇫🇷 Vincennes | 196 | 2010 |
| 21 | [HOPITAL PRIVE ARMAND BRILLARD H.P.A.B](https://www.tamtam.ai/c/hopital-prive-armand-brillard-h-p-a-b) (hopital-prive-armand-brillard-nogent-sur-marne.ramsaysante.fr)<br>Private hospital offers diverse, high-quality care with 155 practitioners, focusing on proximity and patient listening, within a high-tech medical facility. | Hospitals and Health Care | 🇫🇷 Nogent-sur-Marne | 155 | 1991 |
| 22 | [Paris Est Marne&Bois](https://www.tamtam.ai/c/paris-est-marne-and-bois) (parisestmarnebois.fr)<br>Local government organization in Paris suburb providing services for the Marne & Bois region, focused on success and community well-being | Government Administration | 🇫🇷 Joinville-le-Pont | 152 |  |
| 23 | [HOPITAL PRIVE PAUL D'EGINE HPPE](https://www.tamtam.ai/c/hopital-prive-paul-d-egine-hppe) (hopital-prive-paul-d-egine-champigny-sur-marne.ramsaysante.fr)<br>Multidisciplinary healthcare institution offering various medical and surgical specialties, including oncology, spine center, vascular, and breast institutes, with 24/7 emergency services and advanced equipment. | Hospitals and Health Care | 🇫🇷 Champigny-sur-Marne | 142 | 1960 |
| 24 | [INSTITUT LE VAL MANDE](https://www.tamtam.ai/c/institut-le-val-mande) (ilvm.fr)<br>Public medical and social institution specializing in supporting individuals with severe visual impairments and other disabilities such as psychological disorders and intellectual deficits | Hospitals and Health Care | 🇫🇷 Saint-Mandé | 139 |  |
| 25 | [HOPITAL PRIVE DE MARNE LA VALLEE](https://www.tamtam.ai/c/hopital-prive-de-marne-la-vallee) (hopital-prive-marne-la-vallee-bry-sur-marne.ramsaysante.fr)<br>This private hospital, part of Ramsay Santé group, provides local healthcare services for 30,000 patients annually across 21 specialties, with modern facilities. | Hospitals and Health Care | 🇫🇷 Bry-sur-Marne | 135 | 2004 |
| 26 | [GHU APHP. Hôpitaux Universitaires Henri-Mondor](https://www.tamtam.ai/c/ghu-aphp-hopitaux-universitaires-henri-mondor) (aphp.fr)<br>The hospital group is one of the six within AP-HP, with 5 facilities providing a range of medical services with over 8,400 professionals | Government Administration | 🇫🇷 Créteil | 116 | 1969 |
| 27 | [Institut Merle d'Aubigné](https://www.tamtam.ai/c/institut-merle-d-aubigne) (irma-valenton.fr)<br>A nonprofit health institute specializing in prosthetics for amputees and patients with bone-related conditions, as well as providing locomotor rehabilitation | Hospitals and Health Care | 🇫🇷 Valenton | 102 | 1949 |
| 28 | [Sival](https://www.tamtam.ai/c/sival)<br>A team of 166 employees operates and maintains a major wastewater treatment plant in France, serving 25 million residents and promoting environmental sustainability | Environmental Services | 🇫🇷 Valenton | 89 | 2019 |
| 29 | [GHT Psy Sud Paris](https://www.tamtam.ai/c/ght-psy-sud-paris) (psysudparis.fr)<br>Mental health institutions collaborate to improve psychiatric care and life pathways for residents in Hauts-de-Seine and Val de Marne. | Hospitals and Health Care | 🇫🇷 Villejuif | 83 |  |
| 30 | [Loomis FXGS France](https://www.tamtam.ai/c/loomis-fxgs-france) (loomis-fxgs.fr)<br>A leading French market player in gold and currency trading has joined forces with Loomis Group, the top European security firm, as of January 1st, 2019 | Banking | 🇫🇷 Gentilly | 80 |  |

## How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.

## More company lists in the Val-de-Marne department

- [The largest companies in the Val-de-Marne department](https://www.tamtam.ai/l/largest-companies-val-de-marne) (1,386)
- [Multinational companies in the Val-de-Marne department](https://www.tamtam.ai/l/multinational-companies-val-de-marne) (200)
- [Companies with in-house R&D in the Val-de-Marne department](https://www.tamtam.ai/l/r-and-d-companies-val-de-marne) (134)
- [IT Services and IT Consulting companies in the Val-de-Marne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-val-de-marne) (113)
- [IT services companies in the Val-de-Marne department](https://www.tamtam.ai/l/it-services-companies-val-de-marne) (101)
- [Distributors and wholesalers in the Val-de-Marne department](https://www.tamtam.ai/l/distributors-and-wholesalers-val-de-marne) (91)
- [Retail chains in the Val-de-Marne department](https://www.tamtam.ai/l/retail-chains-val-de-marne) (88)
- [Professional services firms in the Val-de-Marne department](https://www.tamtam.ai/l/professional-services-firms-val-de-marne) (88)
- [Manufacturers in the Val-de-Marne department](https://www.tamtam.ai/l/manufacturers-val-de-marne) (85)
- [Hardware manufacturers in the Val-de-Marne department](https://www.tamtam.ai/l/hardware-companies-val-de-marne) (76)
- [Public sector organisations in the Val-de-Marne department](https://www.tamtam.ai/l/public-sector-organisations-val-de-marne) (75)
- [Education providers in the Val-de-Marne department](https://www.tamtam.ai/l/education-companies-val-de-marne) (72)
- [Construction companies in the Val-de-Marne department](https://www.tamtam.ai/l/construction-companies-val-de-marne) (63)
- [SaaS companies in the Val-de-Marne department](https://www.tamtam.ai/l/saas-companies-val-de-marne) (59)
- [Consulting firms in the Val-de-Marne department](https://www.tamtam.ai/l/consulting-firms-val-de-marne) (57)
- [Software Development companies in the Val-de-Marne department](https://www.tamtam.ai/l/software-development-companies-val-de-marne) (57)
- [Business Consulting and Services companies in the Val-de-Marne department](https://www.tamtam.ai/l/business-consulting-and-services-companies-val-de-marne) (48)
- [Government Administration companies in the Val-de-Marne department](https://www.tamtam.ai/l/government-administration-companies-val-de-marne) (45)
- [Healthcare providers in the Val-de-Marne department](https://www.tamtam.ai/l/healthcare-providers-val-de-marne) (44)
- [Pharmaceutical companies in the Val-de-Marne department](https://www.tamtam.ai/l/pharmaceutical-companies-val-de-marne) (43)
- [Higher Education companies in the Val-de-Marne department](https://www.tamtam.ai/l/higher-education-companies-val-de-marne) (42)
- [Family-owned companies in the Val-de-Marne department](https://www.tamtam.ai/l/family-owned-companies-val-de-marne) (42)
- [Accounting firms in the Val-de-Marne department](https://www.tamtam.ai/l/accounting-firms-val-de-marne) (37)
- [Accounting companies in the Val-de-Marne department](https://www.tamtam.ai/l/accounting-companies-val-de-marne) (37)

## The same list elsewhere in France

- [Critical infrastructure operators in France](https://www.tamtam.ai/l/critical-infrastructure-operators-france) (2,721)
- [Critical infrastructure operators in Île-de-France](https://www.tamtam.ai/l/critical-infrastructure-operators-ile-de-france) (780)
- [Critical infrastructure operators in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/critical-infrastructure-operators-auvergne-rhone-alpes) (299)
- [Critical infrastructure operators in Grand Est](https://www.tamtam.ai/l/critical-infrastructure-operators-grand-est) (257)
- [Critical infrastructure operators in Occitanie](https://www.tamtam.ai/l/critical-infrastructure-operators-occitanie) (216)
- [Critical infrastructure operators in Nouvelle-Aquitaine](https://www.tamtam.ai/l/critical-infrastructure-operators-nouvelle-aquitaine) (209)
- [Critical infrastructure operators in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/critical-infrastructure-operators-provence-alpes-cote-dazur) (200)
- [Critical infrastructure operators in Hauts-de-France](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-france) (174)
- [Critical infrastructure operators in the Hauts-de-Seine department](https://www.tamtam.ai/l/critical-infrastructure-operators-hauts-de-seine) (169)
- [Critical infrastructure operators in Pays de la Loire](https://www.tamtam.ai/l/critical-infrastructure-operators-pays-de-la-loire) (127)
- [Critical infrastructure operators in Brittany](https://www.tamtam.ai/l/critical-infrastructure-operators-brittany) (120)
- [Critical infrastructure operators in Normandy](https://www.tamtam.ai/l/critical-infrastructure-operators-normandy) (103)
- [Critical infrastructure operators in the Bouches-du-Rhône department](https://www.tamtam.ai/l/critical-infrastructure-operators-bouches-du-rhone) (98)
- [Critical infrastructure operators in the Rhône department](https://www.tamtam.ai/l/critical-infrastructure-operators-rhone) (94)
- [Critical infrastructure operators in Centre-Val de Loire](https://www.tamtam.ai/l/critical-infrastructure-operators-centre-val-de-loire) (87)
- [Critical infrastructure operators in the Nord department](https://www.tamtam.ai/l/critical-infrastructure-operators-nord) (87)
- [Critical infrastructure operators in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/critical-infrastructure-operators-bourgogne-franche-comte) (76)
- [Critical infrastructure operators in the Haute-Garonne department](https://www.tamtam.ai/l/critical-infrastructure-operators-haute-garonne) (64)
- [Critical infrastructure operators in the Gironde department](https://www.tamtam.ai/l/critical-infrastructure-operators-gironde) (63)
- [Critical infrastructure operators in the Loire-Atlantique department](https://www.tamtam.ai/l/critical-infrastructure-operators-loire-atlantique) (59)
- [Critical infrastructure operators in the Hérault department](https://www.tamtam.ai/l/critical-infrastructure-operators-herault) (57)
- [Critical infrastructure operators in the Seine-Saint-Denis department](https://www.tamtam.ai/l/critical-infrastructure-operators-seine-saint-denis) (53)
- [Critical infrastructure operators in the Seine-Maritime department](https://www.tamtam.ai/l/critical-infrastructure-operators-seine-maritime) (46)
- [Critical infrastructure operators in Paris](https://www.tamtam.ai/l/critical-infrastructure-operators-paris) (331)

---

Source: https://www.tamtam.ai/l/critical-infrastructure-operators-val-de-marne