Our History
Over the years, KOS has built a reputation for launching forward-thinking initiatives across social and healthcare services, psychiatry, rehabilitation, diagnostics and acute care.
The Group is Founded
The vision: to create a hub for private healthcare, offering innovative and personalised services.
KOS was established in 2002 under the name HSS – Holding Sanità e Servizi, led by Claudio Stabon and Giuseppe Vailati Venturi, with Professor Piero Micossi at the helm.


First Three Nursing Homes in Liguria
These first nursing homes set the tone for a consistent focus on quality and the wellbeing of each resident.
In 2003, KOS acquired its first three residential care facilities in Liguria, marking its entry into the elderly and frail care sector.

Entry into Psychiatric Rehabilitation
The Group committed to supporting patients on their journey towards mental and physical recovery through tailored care pathways.
In 2004, KOS expanded into psychiatric rehabilitation with the acquisition of Redancia, a company operating residential facilities in Liguria.


Acquisition of Anni Azzurri
Anni Azzurri brought valuable expertise and resources to help address the increasingly complex needs of elderly care.
With the full acquisition of Anni Azzurri in 2006, KOS expanded its reach nationwide and became one of the leading private providers in the nursing home sector.

Strengthening Rehabilitation with Santo Stefano
With a multidisciplinary and technology-driven approach, KOS responded to the evolving rehabilitation needs of its patients.
In 2007, KOS consolidated its presence in rehabilitation by acquiring Santo Stefano, a long-established organisation in the Marche region.


A New Name: KOS
Inspired by Hippocrates’ legacy to shape the future of modern medicine.
In 2009, the Group rebranded as KOS, inspired by the Greek island where Hippocrates - the father of modern medicine - was born.

International Expansion in Germany
This marked a major step in KOS’s international growth and presence in European healthcare.
In 2019, KOS entered the German market through the full acquisition of Charleston Holding, a company operating 53 elderly care facilities across the country.


Private Healthcare Alongside the Public Sector
Today, the Group complements the public healthcare system with specialised expertise, a widespread local presence, and a strong focus on person-centred care.
In recent years, KOS has continued to grow by acquiring and developing new healthcare and social care facilities and introducing innovative services such as telemedicine across all areas of care.
