Trouver Numéro en Suisse | Comment contacter CSS ?

Comment contacter CSS ?

call service
  • Are you seeking to get in touch with the CSS customer service to inquire about a product?
  • Do you want to visit the company’s official website to access the premium calculator?
  • Can one have a conversation with a medical specialist over the phone?
  • On which social networks is the company present?

To answer these inquiries, we invite you to read this article. After the presentation of CSS in the first part, find the contact details of the insurance company in the second part.

Company Overview

CSS Assurance, also known as Chrétienne sociale suisse Assurance, is a Swiss insurance company established in 1899 in Saint-Gall. It provides services in the field of health insurance. Through its merger with the Geneva-based Intras in November 2007, it became the largest health insurance company in Switzerland, surpassing Groupe Mutuel and Helsana.

In 1899, CSS Assurance was called Caisse-maladie de l’association catholique des travailleurs de Saint-Gall. It was then a mutual aid organization that is part of the tradition of the social Christian doctrine. Social Christian health insurance funds were established in many places in the following years.

The group, headquartered in Lucerne, insures over 1.6 million individuals with a premium volume of nearly 6.6 billion francs. It is a leading insurer in the fields of property and health. It is the top in basic insurance. With more than 2,700 employees and 99 agencies, CSS is close to its clients throughout Switzerland.

Contacting CSS: How to Proceed

Trouver Numéro en Suisse | Comment contacter CSS ?

If for your own reasons, you want to correspond with a CSS customer advisor, we recommend first visiting the company’s website. There, you can access numerous useful information and sections that can address your inquiries. For example, you can sign up for the newsletter to receive valuable health advice via email. It is also possible to find the nearest agency through the website, as it provides a detailed map.

Do you want to have a conversation with an advisor? Two options are available to you:

  • The customer center can be reached at 0844 277 277 from Monday to Friday from 8am to 6pm.
  • To call a medical specialist, the number to contact is + 41 58 277 77 77 (24-hour medical advice).

Prefer to communicate in writing? Send a letter to the following address:


Case postale 2550

6002 Lucerne

On Social Media

Finally, the CSS group is present, reachable, and active on the following social media platforms:

  • Facebook:
  • Twitter:
  • YouTube:

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