CumuluZ
CumuluZ is a Dutch non-profit foundation that builds the open-source data integration infrastructure enabling cross-sector health data exchange across Dutch hospitals, GPs, elderly and mental health providers. Funded by the Ministry of VWS, it operates as the national execution organization for the Landelijk dekkend netwerk.
- Company typePrivate
- Founded2022
- HeadquartersUtrecht, Netherlands
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What CumuluZ does
CumuluZ (legal entity Stichting CumuluZ Zorgdata) is a Dutch non-profit foundation, founded in 2022 and headquartered in Utrecht, that builds the public data-integration infrastructure for cross-sector health data availability in the Netherlands. The organization was established by nine healthcare coalitions (NVZ, UMCNL, ActiZ, LHV, InEen, NHG, Santeon, mProve and Nederlandse GGZ) and operates as the designated execution organization for the Ministry of Health, Welfare and Sport (VWS) within the Landelijk dekkend netwerk (LDN), holding DAEB (Dienst van Algemeen Economisch Belang) status. Its purpose is to enable real-time, cross-sector availability of patient data held in fragmented electronic patient record (EPD), care file (ECD) and hospital information (HIS) systems, addressing medical errors, duplicate diagnostics and administrative burden that arise from incomplete health information.
The technical core is a layered data-integration stack conformant with HL7 FHIR, the zorginformatiebouwstenen (zibs) and the Twiin-als-LVS national trust framework. Principal components are the Doelarchitectuur (a 2030 target architecture integrated into the GISA reference framework), the CumuluZ Adapter (an open-source AGPLv3 reference implementation that translates source-system data into standardized form), the CumuluZ Datastation (a helper application that helps source systems meet unity-of-language, performance and availability requirements), and the CumuluZ Integrator (controlled, verifiable data exchange). Three live use cases - Thuismonitoring (home monitoring), Proactieve Zorgplanning (proactive care planning), and an Inflammatory Bowel Disease secondary-use case with Health-RI - function as validation flywheels for reusable building blocks.
CumuluZ does not sell software or charge for its infrastructure; it is funded by VWS subsidy (most recently granted in March 2025, with multi-year continuation confirmed by Minister Agema) and supplemented by partnership contributions from healthcare coalitions, technology partners (Nictiz, VZVZ, Z-CERT, Twiin, MedMij, Nuts), research infrastructure (Health-RI), medical specialists (FMS) and health insurers (ZN). It is governed by a Raad van Toezicht chaired by Guido van Woerkom and led operationally by directeur-bestuurder Bart de Geus (since September 2025) with Chief Data Officer Renske Veenstra. Go-to-market is community-led and event-driven, conducted through hackathons, plugathons, connectathons, the CumuluZ Connect webinar series and an annual Leveranciersdag for healthcare IT suppliers.
CumuluZ firmographics
Firmographics- Name
- CumuluZ
- Legal name
- Stichting CumuluZ Zorgdata
- Website
- https://cumuluz.org
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- CumuluZ is a Dutch non-profit foundation that builds the open-source data integration infrastructure enabling cross-sector health data exchange across Dutch hospitals, GPs, elderly and mental health providers. Funded by the Ministry of VWS, it operates as the national execution organization for the Landelijk dekkend netwerk.
- Ownership category
- akta.pro rank
CumuluZ industry classification
Industry- Product category
- Healthcare Data Integration Infrastructure
- NAICS
- Computer Systems Design and Related Services (54151), Computer Systems Design and Related Services (5415), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (51821)
- SIC
- Services-Computer Integrated Systems Design (7373), Services-Computer Programming, Data Processing, Etc. (7370)
- akta.pro primary industry
- Interoperability Standards, Profiles & Implementation (HL7/FHIR/IHE) (HLACABAA)
- akta.pro secondary industries
- Enterprise Integration Engines & Interface Management (HL7 v2/X12/API) (HLACABAC), Terminology Services & Semantic Interoperability (SNOMED/LOINC/RxNorm mapping) (HLACABAJ), EHR/EMR Integration & Interoperability Middleware (HL7/FHIR) (HLALAKAD)
Keywords
Where CumuluZ is headquartered
LocationHeadquarters
- HQ city
- Utrecht
- HQ country
- Netherlands
- HQ region
- Europe
Offices1 record
Markets served
CumuluZ business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Operations, Marketing or Sales, Others
Revenue model
- Government Subsidy (VWS): CumuluZ receives government subsidy from the Ministry of Health, Welfare and Sport (VWS) to develop data integration functionality for data availability. Minister Agema stated that VWS will financially support the foundation for the coming years. This is a non-profit organization working without commercial profit motive.
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
CumuluZ product offering
Product offeringCore offering
CumuluZ develops open-source data integration components and reference architecture that serve as a connecting layer between existing Dutch healthcare information systems (EPD, ECD, HIS). The organization builds the CumuluZ Adapter (AGPLv3 reference implementation), Datastation, and Integrator to enable cross-sector health data availability, validated through practical use cases such as Thuismonitoring, Proactieve Zorgplanning, and IBD research. All components are based on HL7 FHIR standards, zibs, and conform to Twiin-als-LVS trust framework.
Product overview
CumuluZ (Stichting CumuluZ Zorgdata) operates as a public, non-concurrent data infrastructure foundation that is not itself a traditional software product but rather develops a suite of data-integration and data-conformity components as part of the national healthcare data infrastructure (Landelijk dekkend netwerk, LDN). The core portfolio includes the CumuluZ Doelarchitectuur (target architecture) as the governing framework, the CumuluZ Adapter (an open-source AGPLv3 reference implementation) that enables source systems to connect to the national infrastructure, the CumuluZ Datastation as a helper application for source systems to meet conformity requirements, and the CumuluZ Integrator for controlled, verifiable data exchange. These components are validated and advanced through three practical use cases: Thuismonitoring (remote patient monitoring), Proactieve Zorgplanning (proactive care planning), and Inflammatory Bowel Disease (IBD) for secondary data use. The overall offering functions as a connecting layer between existing healthcare information systems — not as a replacement EPD, ECD, or HIS — making health data available across sectors for care, well-being, and health.
Differentiator
Problem solved
Functional benefit
Products and services
- CumuluZ Adapter (Referentie-implementatie) Open source reference implementation (AGPLv3 license) that enables healthcare providers and suppliers to connect to the national data infrastructure with limited effort. The adapter ensures data from different systems is available in a standardized format and that data from multiple sources can be combined into a coherent whole.
- CumuluZ Datastation An auxiliary application for source systems to meet conformity requirements regarding unity of language, unity of technique, performance, and availability when connecting to the national healthcare data infrastructure.
- CumuluZ Integrator A solution enabling healthcare providers to make data available in a controlled, verifiable, and compliant manner according to national agreements, supporting the secure exchange of health data across the healthcare chain.
Quantifiable outcome
- Complete patient information available at point of care
- +2 more outcomes
Companies that use CumuluZ
Customer profileNamed customers3 records
Segments4 records
Ideal customer profiles3 records
CumuluZ technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
CumuluZ partnerships and signals
Strategic signalPartnerships
23 partnerships are on record, tiered strategic and core.
- Zorg bij joustrategicRegional home monitoring initiative. Signed intent declaration with CumuluZ to work on cross-sector data availability with focus on heart failure and hypertension.
- AltidestrategicRegional healthcare initiative focused on home monitoring. Partner in intent declaration for joint approach to data availability in home monitoring.
- Jeroen Bosch ThuisstrategicJeroen Bosch hospital home monitoring initiative (Jeroen Bosch Huisartsen and Jeroen Bosch Ziekenhuis). Signed intent declaration for collaboration on home monitoring use case.
- ZN (Zorgverzekeraars Nederland)strategicZN represents health insurers in the Netherlands. Made important agreements with VWS and CumuluZ about role division and coherence between LDN and regional data facilities.
- FMS (Federatie Medisch Specialisten)strategicFMS represents medical specialists and has advocated for data availability for years. Internalist-nephrologist Iris Verberk serves as board member and represents FMS perspective in CumuluZ use cases.
- ActiZ (Organisatie voor zorgondernemers)coreActiZ represents healthcare entrepreneurs in elderly care and home care. Joined the coalition in October 2024 and participates in governance and advisory structures.
- LHV (Landelijke Huisartsen Vereniging)coreLHV represents general practitioners in the Netherlands. Joined coalition in October 2024, bringing primary care perspective to cross-sector data availability.
- InEen (Vereniging van organisaties in de eerste lijn)coreInEen represents organizations in primary care including GP post organizations. Joined coalition in October 2024 for primary care data integration.
- NHG (Nederlands Huisartsen Genootschap)coreNHG develops guidelines and standards for general practice. Joined coalition in October 2024 to contribute to data standards in primary care.
- Nederlandse GGZ (Geestelijke Gezondheidszorg)coreNederlandse GGZ represents mental health organizations. Joined coalition in October 2024 to ensure mental health data is included in cross-sector data infrastructure.
- Health-RIcoreHealth-RI is the Dutch infrastructure for responsible health research. CumuluZ collaborates closely with Health-RI for secondary use of data, particularly in the IBD use case for research purposes.
- NictizcoreNictiz is the Dutch expertise center for electronic healthcare information exchange. CumuluZ works with Nictiz on standardization, the GIM information model, and alignment with national standards.
- VZVZ (Vereniging van Zorgaanbieders voor Verbinding en Informatiestandaardisatie)coreVZVZ manages infrastructure for healthcare data exchange in the Netherlands. Partner for technical integration and standardization of data exchange.
- Z-CERTcoreZ-CERT is the expert organization for healthcare cybersecurity. CumuluZ works with Z-CERT for security expertise and aligns with national cybersecurity guidelines.
- TwiinstrategicTwiin develops trust framework for healthcare data exchange. CumuluZ conforms to Twiin-als-LVS (National Trust Framework) as specified by VWS.
- MedMijstrategicMedMij sets standards for personal health environments (PGO). Consulted during target architecture development for alignment with patient access standards.
- NutsstrategicNuts develops decentralized infrastructure for healthcare data exchange. Consulted during target architecture development for technical alignment.
- RSO's (Regionale Samenwerkingsorganisaties)strategicRegional cooperation organizations working on healthcare data exchange. CumuluZ seeks collaboration to identify which components can be reused and scaled from regional to national level.
- Zorginstituut NederlandstrategicNational healthcare institute providing guidance on healthcare quality and standards. Consulted during target architecture development process.
- NVZ (Nederlandse Vereniging van Ziekenhuizen)coreNVZ represents general and categorical hospitals and rehabilitation centers. NVZ was one of the founding coalition partners of CumuluZ and continues as core strategic partner in the healthcare coalition.
- UMCNL (Universitair Medische Centra Nederland)coreUMCNL represents all 8 university medical centers in the Netherlands. Founding coalition partner that helped establish CumuluZ and continues as core partner in governance and advisory structures.
- SanteoncoreSanteon is a group of teaching hospitals focused on healthcare improvement through data. Supporting partner of CumuluZ coalition, contributing clinical expertise.
- mProvecoremProve represents teaching hospitals in the Netherlands. Supporting partner contributing to CumuluZ governance and use case development.
Scale indicators4 records
Recent moves7 records
Expansion highlights6 records
CumuluZ competitors and assessment
Company assessmentBroad incumbents
- InterSystems: Global vendor of HealthShare, a healthcare integration engine and health information exchange platform widely used by hospitals. InterSystems is a broad incumbent offering competing technical infrastructure that EPD/HIS vendors and providers may choose instead of CumuluZ's open source reference implementation.
- Orion Health: Global vendor of health information exchange and population health management platforms used in national-scale interoperability programs. Orion Health competes with CumuluZ at the technical infrastructure layer for cross-organization health data exchange.
- Rhapsody (by Hyland): Enterprise healthcare integration engine vendor (including the former Corepoint Health and former NextGen Mirth Connect products) offering HL7/FHIR data exchange middleware. Rhapsody provides a competing commercial alternative to CumuluZ's open source Adapter and Integrator stack.
Direct peers
- Nictiz: Dutch expertise center for electronic healthcare information exchange, responsible for developing and maintaining healthcare information standards (zibs, FHIR profiles). Nictiz is a core CumuluZ partner that co-developed the GIM information model, making it the most directly comparable peer in mandate and standards stewardship.
- Health-RI: Dutch national infrastructure for responsible health research and secondary use of health data. Health-RI collaborates with CumuluZ on the IBD use case and shares a similar public-private coalition structure focused on enabling health data access.
- VZVZ (Vereniging van Zorgaanbieders voor Verbinding en Informatiestandaardisatie): Manages the existing AORTA/LSP infrastructure for healthcare data exchange in the Netherlands. VZVZ is a core CumuluZ technology partner and operates the most established parallel exchange infrastructure that CumuluZ must align with and ultimately supersede for cross-sector data availability.
- MedMij: Sets the Dutch standards framework for personal health environments (PGO) that let patients access their health data. MedMij was consulted during CumuluZ's target architecture development and defines the patient-facing access layer that CumuluZ must interoperate with.
- Nuts: Develops decentralized, peer-to-peer infrastructure for healthcare data exchange based on open standards. Nuts was consulted during CumuluZ's target architecture development and operates as a parallel infrastructure initiative with overlapping technical scope.
- Twiin: Develops the trust framework (Twiin-als-LVS) for healthcare data exchange in the Netherlands, specified by VWS as the standard CumuluZ conforms to. Twiin operates in the governance and trust layer directly adjacent to CumuluZ's integration layer.
Regional players
- Regionale Samenwerkingsorganisaties (RSO's): Regional cooperation organizations across the Netherlands that operate local healthcare data exchange initiatives. CumuluZ explicitly seeks to identify and scale reusable components from these regional networks up to the national level, making them regional peers with overlapping but narrower geographic scope.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
CumuluZ social profiles
Digital presenceCumuluZ financial estimates
Financial estimateRevenue estimate
Valuation estimate
CumuluZ leadership team
Management profileNumber of profiles
Profiles9 records
CumuluZ funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
CumuluZ M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about CumuluZ
What does CumuluZ do?
CumuluZ develops open-source data integration components and reference architecture that serve as a connecting layer between existing Dutch healthcare information systems (EPD, ECD, HIS). The organization builds the CumuluZ Adapter (AGPLv3 reference implementation), Datastation, and Integrator to enable cross-sector health data availability, validated through practical use cases such as Thuismonitoring, Proactieve Zorgplanning, and IBD research. All components are based on HL7 FHIR standards, zibs, and conform to Twiin-als-LVS trust framework.
Is CumuluZ a public or private company?
CumuluZ is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was CumuluZ founded?
CumuluZ was founded in 2022. It employs 11 to 50 people.
Where is CumuluZ based?
CumuluZ is headquartered in Utrecht, Netherlands, in the Europe region.
How does CumuluZ make money?
One revenue line is on record: government Subsidy (VWS).
Who are CumuluZ's main competitors?
Broad incumbents on record are InterSystems, Orion Health and Rhapsody (by Hyland). Direct peers are Nictiz, Health-RI, VZVZ (Vereniging van Zorgaanbieders voor Verbinding en Informatiestandaardisatie), MedMij, Nuts and Twiin. Regionale Samenwerkingsorganisaties (RSO's) is listed as a regional player.
Does CumuluZ have an API?
No public API is recorded for CumuluZ.
What industry is CumuluZ in?
CumuluZ's product category is Healthcare Data Integration Infrastructure. Its primary akta.pro industry code is HLACABAA, Interoperability Standards, Profiles & Implementation (HL7/FHIR/IHE), with a secondary code of HLACABAC, Enterprise Integration Engines & Interface Management (HL7 v2/X12/API). Its NAICS code is 54151 and its SIC code is 7373.