What Terwille does

Terwille (legal name Stichting Terwille) is a Dutch ANBI-registered, HKZ-certified GGZ healthcare foundation founded in 1998 in Groningen, Netherlands, providing addiction care (verslavingszorg), prostitution care (prostitutiezorg), and forensic care (forensische zorg) across Northern, Eastern, and Central Netherlands. The organisation operates seven outpatient clinics (poliklinieken) in Groningen, Den Helder, Alkmaar, Lelystad, Almere, and Enschede, alongside residential and protected-living locations including Spetse Hoeve (15 men, forensic/addiction), Leerhuis Drenthe (10 studios for women), a safe shelter (woonboerderij) for women exiting prostitution, and Housing First housing branded 'Mien Aigen Hoes'. Its clinical platform combines evidence-based modalities (CBT, Minnesota 12-step day treatment, relapse prevention, systemic therapy) with differentiated therapy modules such as boxing therapy, horse coaching, running therapy, and art/drama/music/psychomotor therapy. Digital touchpoints include the Mijn Terwille client portal via Karify, the AskTerwille anonymous e-help platform, the TERESA chatbot, and an alcohol self-test tool; outreach is delivered through branded programmes (Terplekke, Time2Connect, LIV, Steunpunt Prostitutie Flevoland) and prevention work in schools and churches via Doe ReLEGS.

Terwille's business model is government-reimbursement led: revenue is funded primarily through Dutch health insurers (zorgverzekeraars — contracts with all for 2024), care offices (zorgkantoor/Wlz), municipalities (WMO for social support), and the Ministry of Justice (IFZO for forensic care), supplemented by ANBI-status donations that fund non-reimbursed prevention and shelter activities. Patient acquisition runs through GP referrals via ZorgDomein and forensic referrals via IFZO, with self-referral enabled via a helpline, anonymous chatbot, and online intake. The organisation reports 122 employees, is governed by a Raad van Bestuur led by directeur-bestuurder Douwe Weening with psychiatrist Jan van Veen as a long-tenured clinical anchor, and operates with an embedded team of experiential experts (ervaringsdeskundigen) alongside professional clinicians. Strategic positioning emphasises an explicit person-centred, Christian-identity ('vanuit lef en liefde, van mens tot mens, samen naar perspectief') approach, non-judgmental care for hidden populations, and a Housing First / 8-fasenmodel orientation that differentiates it from standard GGZ addiction providers.

Name

Terwille

Legal name

Stichting Terwille

Website

https://terwille.nl

Company type

Private

Founded year

1998

Operating status

Operating

Headcount range

51–100 employees

Short description

Terwille is a Dutch ANBI-registered GGZ foundation providing addiction, prostitution, and forensic care across Northern, Eastern, and Central Netherlands via outpatient clinics, residential shelters, outreach teams, and digital e-help, funded by health insurers, municipalities, and justice.

Ownership category

akta.pro rank

Headquarters

HQ city

Groningen

HQ country

Netherlands

HQ region

Europe

Offices10 records

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Government-funded healthcare (Zorgverzekering / Zorgkantoor / WMO / Justitie): Terwille's primary revenue comes from Dutch health insurers (zorgverzekeraars), care offices (zorgkantoor) for long-term care (Wlz/Zorgkantoor), municipal social support (WMO) for assisted living, and justice (forensische zorg / IFZO). Terwille has contracts with all Dutch health insurers for 2024.
2. Donations and charitable contributions (ANBI): As an ANBI (Algemeen Nut Beogende Instelling), Terwille receives tax-deductible donations. Donations fund non-reimbursed activities including prevention work (Doe ReLEGS at schools and churches), safe shelter for prostitution clients, and an 'ontzorgpot' (relief fund) for clients facing financial barriers to care. Giften are IBAN NL78 INGB 0650 5879 95.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels8 records

Core offering

Terwille is a government-recognised Dutch GGZ healthcare institution (Stichting Terwille) delivering specialised addiction care (verslavingszorg), prostitution care (prostitutiezorg), and forensic care (forensische zorg) across Northern, Eastern, and Central Netherlands. It provides outpatient clinical treatment, residential and protected housing, outreach to vulnerable populations, sheltered living, reintegration, and prevention services, funded through Dutch health insurers, care offices, municipalities, and justice.

Product overview

Terwille is a Dutch healthcare organization offering addiction care, prostitution care, and forensic care services across Northern, Eastern, and Central Netherlands. The organization operates as a platform-plus-modules architecture, combining core treatment services (individual and group therapy) with specialized therapy modules (CBT, boxing therapy, running therapy, arts therapy, systemic therapy) and housing services (protected housing, Housing First, the Spetse Hoeve, and Leerhuis Drenthe). Digital services include the E-hulp/Ask Terwille anonymous help platform, the Mijn Terwille client portal via Karify, the TERESA chatbot on the helpline, and an alcohol self-test tool. Prevention programs like Doe ReLEGS and employment support through IPS complement the clinical offerings.

Differentiator

Problem solved

Functional benefit

Brands

• AskTerwille: Anonymous e-help platform for online counseling
• Doe ReLEGS
• Time2Connect
• LIV
• Terplekke
• Mien Aigen Hoes
• Perspectief+

Products and services

• Verslavingszorg (Addiction Care) Specialised GGZ treatment for adults with substance addictions (alcohol, hard drugs, cannabis, medications, tobacco) and behavioural addictions (gambling, gaming, pornography), delivered through individual therapy, group therapy, day treatment, relapse prevention, and outreach.
• Prostitutiezorg (Prostitution Care) Specialised care and exit support for people working in or who have exited the sex industry, and victims of human trafficking (seksuele uitbuiting), including outreach, trauma therapy, safe shelter, and accompaniment through justice procedures for undocumented victims.
• Forensische zorg (Forensic Care) Specialised care for men with addiction and/or psychiatric issues who have come into contact with police or justice, delivered both inside prisons (PI Heerhugowaard, Veenhuizen, Zaanstad) and in community settings such as Spetse Hoeve and Kleinschalig wonen Den Helder.
• Individuele behandeling (Individual Treatment) One-on-one treatment sessions with a therapist at Terwille locations focusing on breaking addiction patterns, also available via video calling.
• Groepsbehandeling (Group Treatment) Group-based treatment including Instroom group, Relapse Prevention group, Parent/Partner group, and Day treatment (Minneapolis 12-step) programmes for clients in addiction and recovery.
• Dagbehandeling - Minnesota Model (Day Treatment) 12-step Minnesota Model day treatment programme run three days per week (Monday, Wednesday, Friday) for 12 weeks, focused on stopping addictive behaviour and developing lasting lifestyle changes.
• Beschermd wonen (Protected Housing) Small-scale protected housing working toward independent living, with options for people with addiction backgrounds, women exiting prostitution, and men with forensic backgrounds.
• De Spetse Hoeve Protected residential location for up to 15 men reintegrating after a justice trajectory. Clean entry required; minimum 6-month programme including Minnesota treatment, horse coaching, farm work, fitness, and woodworking.
• Leerhuis Drenthe Protected residential location with two large houses containing ten independent studios for women who have been in unsafe relationships or involved with prostitution and/or addiction.
• Housing First - Mien Aigen Hoes Housing First programme providing housing without prerequisites for homeless people with mental and social issues; residents determine their own path with support from peer experts.
• Begeleiding (Guidance) Practical supportive help focused on self-reliance using the 8-phase model, addressing housing, work, health, finances, and social relations.
• E-hulp / AskTerwille (Anonymous e-help) Anonymous e-help via Karify platform requiring no referral letter; contact available through secure online environment, WhatsApp, email, or phone, free and accessible without formal referral.
• Terplekke (Outreach Care) Outreach service for homeless, addicted, or psychiatric clients with distance to care; staff go to where clients are and offer customised trajectories for recovery and self-reliance.
• IPS - Individuele Plaatsing en Steun (Individual Placement and Support) Individual Placement and Support programme guiding clients step by step toward paid work, available to all clients regardless of treatment stage, with support up to 2 years after starting work.
• Hulplijn (Helpline) Helpline for questions about alcohol or drugs, providing a listening ear and chat support, accessible mornings (Mon, Fri 9:00-12:00) and evenings (Tue, Thu 19:00-21:00), with TERESA chatbot for initial contact.
• Mijn Terwille (Client Portal) Client portal via Karify allowing clients to create accounts, view treatment plans, and video call with practitioners.
• Zelftest Alcohol (Alcohol Self-Test) Online self-test for alcohol use providing immediate advice and tips based on user responses.
• Doe ReLEGS (Prevention Programme) Prevention programme for schools and churches focusing on body, emotion, spirit, and social balance to help young people make healthy choices and build resilience.

Quantifiable outcome

• Clients achieve sustained recovery: Trienko remained alcohol-free for 10 years; Sharona achieved 256 days clean from cocaine; Marcela remained abstinent after a spiritual transformation on 13 September 2024; clients successfully transitioned to independent living, employment, and education through IPS and Talentenplein programmes.

Named customers3 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

Integration1 record

Feature5 records

Partnerships

Twelve partnerships are on record, tiered minor and core.

• Leger des Heils (Salvation Army)minorStrategic or Co-development PartnerThe Leger des Heils (Salvation Army) is mentioned as a collaboration partner in the Talentenplein project, which helps clients find employment. They work together with Tot Heil des Volks and Overweeghuis to provide integrated support including housing, language training, and job placement for people exiting addiction and prostitution.
• Time2ConnectcoreStrategic or Co-development PartnerTime2Connect is a daughter site and outreach partner operating in Groningen and Drenthe for prostitution care outreach. Terwille is outreachend zichtbaar (proactively visible) within the Time2Connect framework to reach people working in the sex industry.
• LIV in connection (LIV)coreStrategic or Co-development PartnerLIV in connection is a daughter site and outreach partner operating in Overijssel for prostitution care outreach. Terwille is outreachend visible within the LIV network to reach sex workers in the Twente region.
• Steunpunt Prostitutie FlevolandcoreStrategic or Co-development PartnerSteunpunt Prostitutie Flevoland is an outreach partner operating in Flevoland for prostitution care. A flyer (PDF) is maintained by Terwille for this partner. The collaboration enables Terwille to reach sex workers in the Flevoland region.
• Doe ReLEGSminorStrategic or Co-development PartnerDoe ReLEGS is a daughter site focused on prevention education at schools and churches. LEGS stands for Lichaam, Emotie, Geest en Sociaal (Body, Emotion, Spirit, Social). The programme helps young people build resilience and make healthy choices, targeting early prevention of addiction.
• AskTerwillecoreStrategic or Co-development PartnerAskTerwille is a daughter site providing anonymous e-help via a Karify secure environment, without requiring a referral letter and free of charge. It is a primary channel for reaching clients who cannot or will not engage through official referral pathways.
• LIV (dochter site / Livinconnection.nl)minorStrategic or Co-development PartnerLIV (livinconnection.nl) is a daughter site focused on outreach for people in the sex industry in Overijssel, operating in conjunction with Terwille's outreach programme.
• Tot Heil des VolksminorStrategic or Co-development PartnerTot Heil des Volks is mentioned as a collaboration partner in the Talentenplein employment project alongside the Leger des Heils and Overweeghuis, supporting clients in finding work as part of their recovery trajectory.
• OverweeghuisminorStrategic or Co-development PartnerThe Overweeghuis is mentioned as a collaboration partner in the Talentenplein employment project, helping clients transition from addiction treatment to work and independent living.
• Penitentiaire Inrichtingen (Heerhugowaard, Veenhuizen, Zaanstad)coreStrategic or Co-development PartnerTerwille delivers addiction treatment inside several Dutch prisons: Heerhugowaard, Veenhuizen, and Zaanstad. Services include intake, treatment, and outreach during detention, targeting men with addiction and psychiatric issues who are in contact with the justice system.
• Heel Nederland WerktminorStrategic or Co-development PartnerThrough the 'Heel Nederland Werkt' network, Terwille's Talentenplein project can offer clients free or heavily subsidised training courses via partners Scheidegger, NCIO, and NTI, supporting employment and education goals.
• KentaaminorChannel Partner/ Reseller/ DistributorKentaa is a third-party fundraising platform (inactievoorterwille.kentaa.nl) that enables supporters to create and manage fundraising campaigns for Terwille, expanding the organisation's donor acquisition beyond direct IBAN donations.

Scale indicators5 records

Recent moves8 records

Expansion highlights5 records

Regional players

• Mondriaan: Mondriaan is a GGZ provider in Limburg and surrounding regions, offering addiction, forensic, and general psychiatric services. Comparable to Terwille's integrated service portfolio but in a different Dutch region.
• Vincent van Gogh Instituut: Vincent van Gogh is a Dutch GGZ provider focused on severe psychiatric and addiction comorbidities in Limburg. It is comparable to Terwille's forensic and dual-diagnosis work, though serving a different geographic region.

Broad incumbents

• Tactus Verslavingszorg: Tactus is a major Dutch addiction care provider operating across multiple regions with outpatient clinics, residential care, and youth services. Like Terwille, it offers a full continuum of addiction treatment funded through Dutch health insurers and municipalities.
• GGZ inGeest: GGZ inGeest is a large Amsterdam-based mental health provider (part of Amsterdam UMC) offering outpatient and specialist psychiatric care including addiction. Comparable to Terwille's psychiatrist-led outpatient model, though broader in clinical scope.
• Novadic-Kentron: Novadic-Kentron is a large Dutch addiction care organisation in the southern Netherlands offering outpatient, residential, and forensic addiction services. Comparable to Terwille as a multi-regional GGZ provider with similar funding models.
• Jellinek: Part of Arkin, Jellinek is one of the largest Dutch addiction care providers with national coverage including Amsterdam and other Randstad cities. It is directly comparable to Terwille's verslavingszorg offering and serves a similar outpatient and residential addiction population.

Direct peers

• De Hoop: De Hoop is a Christian-founded addiction care provider in the Netherlands with residential and outpatient programmes. It is directly comparable to Terwille given the shared Christian identity, addiction focus, and emphasis on holistic recovery including reintegration.
• Leger des Heils (Salvation Army): Leger des Heils is a Dutch social services and addiction care provider with protected housing, outreach, and employment support. Already a Terwille partner in the Talentenplein project, it is comparable as a faith-based, multi-service provider for vulnerable populations.
• Verslavingszorg Noord Nederland (VNN): VNN is the regional addiction care provider for the Northern Netherlands, directly overlapping with Terwille's Groningen/Noord-Nederland catchment. The two compete for the same GP referrals and insurance contracts in the core Terwille region.
• IrisZorg: IrisZorg is a Dutch GGZ and social care provider offering addiction, youth, and forensic services across Gelderland and Overijssel. It overlaps with Terwille's geographic reach and service portfolio, including outpatient addiction care and justice-involved programmes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeopen.spotify.com/show/0VcvFnXXjcHDMtEKcpG3JR?si=06e9606caf004cd0
• Facebookfacebook.com/terwilleverslavingszorg
• LinkedInlinkedin.com/company/stichting-terwille
• Instagraminstagram.com/terwilleverslavingszorg
• Xx.com/terwille

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Terwille