ZAS - Ziekenhuis aan de Stroom

What ZAS - Ziekenhuis aan de Stroom does

ZAS (Ziekenhuis aan de Stroom) is the largest hospital network in the Antwerp metropolitan area, operating as a non-profit association (vzw) formed on July 1, 2024 from the merger of ZNA (Ziekenhuis Netwerk Antwerpen) and GZA Ziekenhuizen. The network spans 18 campuses and delivers general, specialized, and psychiatric healthcare services including emergency care, oncology, cardiac care, nephrology, pediatrics, and mental health. Operational scale is meaningful: five emergency departments treated 188,000 patients in 2024, 8,023 babies were delivered, the Lung Tumor Clinic performed 120+ lung tumor surgeries on 430 patients, and more than 500 pacemakers were implanted annually. Specialized centers include the Heart Center, the Cancer Center at ZAS Augustinus (the largest cancer center in Flanders), the Lung Tumor Clinic at Middelheim, the Kidney Clinic, and the Fall Clinic, with ZAS holding the first DGU-certified trauma network in Belgium and a Cardiac Arrest Center achieving 17% survival versus a Belgian average of 8.5%.

The technology stack is anchored by a unified Electronic Patient Dossier (EPD) implemented across all campuses since 2022, the Mijn ZAS patient portal, and the PACSonWEB unified imaging platform rolled out in June 2025. AI capabilities are deployed in production rather than aspirational: a dedicated AI Expertise Center for Pathological Anatomy opened in January 2024 (visited by Queen Mathilde of Belgium), the world's first next-generation AI-powered X-ray room operates at ZAS Palfijn since December 2024, and AI-assisted tumor analysis supports breast cancer treatment planning. ZAS also commissioned 4,400 m² of new solar panels, doubling on-site solar capacity, and operates a Zorgwinkel De Schakel retail health-products outlet opened in September 2024.

ZAS generates revenue primarily through fee-for-service billing under Belgium's regulated national health insurance system, with services billed through RIZIV/INAMI and reimbursed by patient mutualities and supplemental insurance providers. The customer base is the general population of the Antwerp region, accessed via self-referral, online appointment booking, emergency departments, GP and specialist referrals through the Zorgverlenersportaal, and the specialized centers. Volume-based performance indicators such as emergency department throughput (188,000 patients in 2024, up from 177,500 previously) and specialty procedure counts provide top-line signals, though as a non-profit the organization does not publicly disclose consolidated revenue.

Name

ZAS - Ziekenhuis aan de Stroom

Legal name

Ziekenhuis aan de Stroom vzw

Website

https://zas.be

Company type

Private

Founded year

2024

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

ZAS is a non-profit hospital network formed in 2024 from the merger of ZNA and GZA Ziekenhuizen, operating 18 campuses across the Antwerp metropolitan area and serving the regional population with general, specialized, and psychiatric healthcare under Belgium's regulated fee-for-service reimbursement system.

Ownership category

akta.pro rank

Product category

General Hospital Services

NAICS

Psychiatric and Substance Abuse Hospitals (6222), Outpatient Mental Health and Substance Abuse Centers (621420), Offices of Physicians, Mental Health Specialists (621112), Services for the Elderly and Persons with Disabilities (62412), Offices of Physicians (except Mental Health Specialists) (621111)

SIC

Services-Hospitals (8060), Services-General Medical & Surgical Hospitals, Nec (8062), Services-Specialty Outpatient Facilities, Nec (8093), Services-Medical Laboratories (8071), Services-Misc Health & Allied Services, Nec (8090)

akta.pro primary industry

Inpatient Psychiatric Hospitals (HLAFAHAH)

akta.pro secondary industries

Outpatient Mental Health & Counseling Clinics (HLAFABAC), Obstetrics & Gynecology (OB/GYN) Clinics (HLAFAJAA), Chronic Care & Complex Care Management (HSABAIAD), Community Paramedicine & Mobile Integrated Healthcare (MIH/CP) Programs (HLAFANAI)

Keywords

• General hospital services
• Emergency medical care
• Cancer treatment center
• Cardiac care services
• Pediatric hospital services

Headquarters

HQ city

Antwerpen

HQ country

Belgium

HQ region

Europe

Offices18 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

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

Revenue model

1. Healthcare Services Revenue: ZAS generates revenue through providing medical healthcare services to patients. In Belgium's healthcare system, hospitals bill patients directly, with costs covered by health insurance (mutualities) and patient co-payments. ZAS operates on a fee-for-service model regulated by national health insurance.
2. Hospitalization Insurance Billing: Services are billed to mutualities and supplemental insurance providers. The hospital maintains billing systems that integrate with Belgian social security systems and handles reimbursement processes for patients.
3. Specialized Medical Treatments: Revenue from specialized treatments and procedures including cancer care, cardiac care, dialysis, fertility treatments, and surgical interventions. Some specialized services have RIZIV recognition enabling reimbursement.

Pricing tiers

Go-to-market motion2 records

Distribution channels5 records

Marketing channels7 records

Core offering

ZAS operates a non-profit network of 18 hospital campuses across the Antwerp region delivering general, emergency, specialized, and psychiatric healthcare services to the local population. Its offerings span outpatient consultations, inpatient hospital stays, surgery, cancer care, cardiac care, maternity, pediatrics, nephrology, geriatrics, and mental health services, supported by a unified electronic patient record, the Mijn ZAS patient portal, and a standardized medical imaging platform.

Product overview

ZAS (Ziekenhuis aan de Stroom) is a hospital system formed from the merger of ZNA and GZA hospitals in Antwerp, Belgium. It operates multiple campuses offering comprehensive healthcare services through both general and specialized medical departments. The organization provides patient-facing digital services including the Mijn ZAS patient portal for online appointment management and medical record access, supported by an internally developed Elektronisch Patiëntendossier (EPD) electronic health record system. Specialized care is delivered through dedicated centers including the Nierkliniek (kidney care), Hartcentrum (cardiac center), Kliniek voor Longtumoren (lung tumor clinic), Valkliniek (fall clinic), and an AI Expertise Center for pathological anatomy. The hospital uses PACSonWEB for standardized medical imaging across all campuses and participates in the Antwerps Trauma Netwerk for coordinated regional trauma care. The organization has invested in AI-powered medical imaging including the world's first AI-enhanced X-ray room at ZAS Palfijn.

Differentiator

Problem solved

Functional benefit

Brands

• Mijn ZAS: Patient portal for accessing medical records, appointments, and invoices
• WaterWakers
• Antwerps Trauma Netwerk

Products and services

• Mijn ZAS Patient Portal
• Hartcentrum (Cardiac Center)

Quantifiable outcome

• 17% cardiac arrest survival rate after 30 days (double Belgian average of 8.5%)
• +7 more outcomes

Named customers1 record

Segments8 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration4 records

AI capability7 records

Feature4 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Antwerps Trauma Netwerk (ATN)coreStrategic or Co-development Partner · 1 January 2023ZAS is part of the Antwerps Trauma Netwerk (ATN), a collaboration of 11 hospitals including AZ Herentals, AZ Klina, AZ Monica, AZ Sint-Blasius, AZ Turnhout, AZ Voorkempen, Heilig Hart Lier, UZA, VITAZ, Ziekenhuis Geel, and ZAS. The network coordinates trauma care, data registration, training, and quality improvement across the Antwerp region. ATN received DGU certification as the first Belgian trauma network.
• Iridium KankernetwerkcoreStrategic or Co-development PartnerCancer care network for sharing patient information with external healthcare providers when necessary for continued care. Enables coordinated cancer treatment across care settings.
• RevArteminorStrategic or Co-development PartnerRevalidation center partner for patient transfers when continued rehabilitation care is needed after hospital discharge.
• GolfStars vzwminorGTM or Marketing PartnerPartner in organizing Golf to Cure program, combining golf lessons with cancer treatment support for ZAS patients.
• Waaier vzwminorGTM or Marketing PartnerOrganizes Golf to Cure program for cancer patients at ZAS, providing therapeutic golf activities in collaboration with GolfStars vzw.
• City of AntwerpcoreStrategic or Co-development PartnerPartner in climate initiative 'Zon op Grote Daken' (Sun on Large Roofs) for solar panel installation. ZAS participated in pilot project that led to installation of 4,400 m² solar panels across four campuses. The partnership also created the 'zonnemakelaar' (solar broker) role to help other large building owners transition to solar energy.
• AZ RivierenlandminorStrategic or Co-development PartnerPartnership with AZ Rivierenland for ERC Advanced Life Support (ALS) course, first held at ZAS Cadix.
• Zorgbedrijf Antwerpen - Zorgwinkel De SchakelminorStrategic or Co-development PartnerHealthcare retail partner located in ZAS Cadix Zorgboulevard, offering healthcare products and information about home care services, senior housing, transportation, and other care services.
• Radio MinervaminorGTM or Marketing PartnerLocal radio partner for events, broadcasting live from Zorgwinkel De Schakel opening and featuring live band performances for community engagement.

Scale indicators16 records

Recent moves13 records

Expansion highlights6 records

Direct peers

• AZ Delta: Regional hospital network in West Flanders formed from merger of multiple campuses. Comparable as a merged multi-campus Belgian hospital offering general, specialist, and emergency services across distributed sites.
• Universitair Ziekenhuis Antwerpen (UZA): Academic hospital in Antwerp providing general, specialized, and tertiary care. Direct competitor in the Antwerp metropolitan market with overlapping specialty services including oncology, cardiac, and emergency care, but operates from a single campus versus ZAS's 18-campus network.
• Jessa Ziekenhuis: Large regional hospital network in Limburg, Belgium formed from the merger of multiple hospitals. Closely comparable as a merged multi-campus non-profit Belgian hospital network with similar integration challenges and specialty care offerings.
• AZ Monica: Antwerp-based general hospital and member of the Antwerps Trauma Netwerk alongside ZAS. Direct regional competitor in the Antwerp metropolitan market for general, emergency, and specialty hospital services.
• AZ Sint-Blasius: Dendermonde-based regional hospital and fellow Antwerps Trauma Netwerk member. Comparable as a Belgian regional hospital offering general and emergency services, though serving a different geographic catchment.
• AZ Rivierenland: Regional hospital network in the Antwerp/Brabant area offering general and specialized care. Comparable multi-campus hospital network serving an overlapping Belgian catchment area, and listed as a ZAS training partner for ERC ALS courses.

Broad incumbents

• UZ Leuven: Belgium's largest academic hospital and a leading European tertiary care center. Comparable as a major Belgian hospital providing advanced specialty care, though operating at a significantly larger national scale than ZAS's regional Antwerp focus.
• CHU de Liège: Large academic hospital in Wallonia, Belgium offering comprehensive general and specialty care. Comparable as a major Belgian hospital providing tertiary services, but serving a different regional population than Antwerp-based ZAS.

Others

• Helena Hospitals (formerly ZNA sites prior to merger): Predecessor networks to ZAS; included for context as legacy entities now consolidated within ZAS. Not a current active peer.
• Helix (Hôpitaux de Brabois, etc.): Network of Belgian hospitals including several Brussels-area facilities. Thematically comparable as a multi-site Belgian hospital network, though structurally organized as a private group rather than a non-profit merger entity like ZAS.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat7 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/zasziekenhuis
• LinkedInlinkedin.com/company/zasziekenhuis
• Instagraminstagram.com/zasziekenhuis

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 ZAS - Ziekenhuis aan de Stroom