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Legal notice pursuant to Section 5 of the Digital Services Act

General Practice
Praxis Kosiol & Kollegen
Siegstraße 53
57076 Siegen-Weidenau
GermanyResponsible person pursuant to § 18 para. 2 MStV:
Maik KosiolContact:
Phone: +49 271 72267
Fax: +49 271 72855
Email: praxis(ät)kosiol-kollegen(döt)deProfessional Title and Professional Regulations:
The professional title Physician was awarded in the Federal Republic of Germany.Supervisory Authority:
Kassenärztliche Vereinigung Westfalen-Lippe (KVWL)
Public corporation
Robert-Schimrigk-Straße 4–6
44141 Dortmund
GermanyCompetent Chamber:
Ärztekammer Westfalen-Lippe
Public corporation
Gartenstraße 210–214
48147 Münster
GermanyProfessional Regulations:
- Professional Code of Conduct for Physicians in North Rhine-Westphalia
- Health Professions Act of the State of North Rhine-WestphaliaThe applicable regulations can be viewed at:
Professional Code of Conduct for Physicians↗
Health Professions Act NRW↗DisclaimerLiability for Content:
The content of our pages has been created with the utmost care. However, we cannot guarantee the accuracy, completeness, or timeliness of the content.
As a service provider, we remain responsible for our own content on these pages in accordance with general laws pursuant to § 7 para. 1 TMG (old version).
However, we are not obligated to monitor transmitted or stored third-party information or to investigate circumstances that indicate unlawful activity.
Obligations to remove or block the use of information under general laws remain unaffected.
Liability in this respect, however, is only possible from the time of knowledge of a specific legal violation.
Upon becoming aware of such violations, we will remove the content immediately.Liability for Links:
Our website contains links to external websites of third parties, over whose content we have no influence.
Therefore, we cannot assume any liability for this external content. The respective provider or operator of the linked pages is always responsible for their content.
The linked pages were checked for possible legal violations at the time of linking – unlawful content was not identifiable at that time.
A permanent content review of the linked pages is not reasonable without concrete indications of a violation of the law.
If we become aware of any legal violations, we will remove such links immediately.Copyright:
The content and works created by the site operator on these pages are subject to German copyright law.
The reproduction, editing, distribution, and any kind of use outside the limits of copyright law require the written consent of the respective author or creator.
Downloads and copies of this site are permitted for private, non-commercial use only.
Insofar as content on this site was not created by the operator, the copyrights of third parties are respected and such content is marked accordingly.
Should you nevertheless become aware of a copyright infringement, we kindly ask you to notify us accordingly.
Upon becoming aware of legal violations, we will remove such content immediately.Image Credits:
Pexels, Mirai F.Dispute Resolution:
The European Commission provides a platform for online dispute resolution (ODR):
https://ec.europa.eu/consumers/odr↗
You can find our email address above in the legal notice.We are not willing or obligated to participate in dispute resolution proceedings before a consumer arbitration board.Any misuse of the data provided in this legal notice will be reported!

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Meet the team

Mr. Maik Kosiol is an experienced general practitioner with a special focus on prevention, true to the motto “prevention is better than cure.” He holds a Diploma I in diving fitness examinations from the GTÜM (Society for Diving and Hyperbaric Medicine) and offers diving fitness examinations certified according to GTÜM standards. Maik Kosiol is also continuing his education in sports and palliative medicine. As part of this, he spent 12 months as team doctor for Sportfreundinnen Siegen (regional soccer league) and has been regularly involved in palliative care in hospices and with his own patients for several years.Fabian Adam
As a specialist in general medicine, I am a fan of communicative medicine and am interested in the whole person.
Sometimes unconventional and often pragmatic, I leave the medical ivory tower and work with my patients to consider what works best in practice.

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Opening hours, holidays, and substitutes

Our regular opening hours:

We want you to feel comfortable and well cared for. That is why we have carefully planned our office hours to respond flexibly to your needs. Please note our opening hours for making an appointment or scheduling a personal consultation. We look forward to helping you and welcoming you to our practice.

Availability by phone:

We are also happy to assist you by appointment. Please note that our practice is closed on weekends and public holidays. In urgent cases, please call 112. When we are closed, you can reach us at 116117. The KV doctors are there for you when everyone else is closed.

How to find us:

No problem even without a car. Get off at the “Schmiedestr.” stop on lines C106, R16, and R17.

Vacation periods & substitute physicians

Even doctors need a break sometimes. In the table below, you will find our current vacation announcements and the name of the substitute doctor. Always call the substitute practices in advance to avoid long waiting times!

Current vacation periods:
From June 1 to June 5, 2026, and from August 17 to August 31, 2026, as well as on all public holidays in North Rhine-Westphalia.

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✆ In case of emergency

Emergency GP service: 116117
Free emergency GP service provided by the KVWL. (For non-life-threatening emergencies)
⸻
Emergency number: 112
Ambulance service or fire department. (For life-threatening emergencies)
⸻
Emergency pharmacies: digital search via Aponet↗

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Privacy Policy

We appreciate your interest in our practice. The protection of your personal data, especially your health data, is of the highest priority to us. Below, we inform you in accordance with the General Data Protection Regulation (GDPR) about the nature, scope, and purpose of the processing of personal data when using our website.1. ControllerPraxis Kosiol & Kollegen
Siegstraße 53
57076 Siegen (Weidenau)
GermanyPhone: +49 271 72267
Fax: +49 271 72855
Email: praxis(ät)kosiol-kollegen(döt)de2. General Information on Data ProcessingWe process personal data exclusively within the framework of the applicable legal provisions, in particular the GDPR and the German Federal Data Protection Act (BDSG). Processing takes place only insofar as this is necessary to provide our website, to process your inquiries, or to fulfill medical and legal obligations.3. Collection and Storage of Personal Data When Visiting the WebsiteWhen you access our website, information is automatically transmitted by the browser used on your device to our website server. This information is temporarily stored in so-called server log files.In particular, the following data is collected:
- IP address of the requesting device
- Date and time of access
- Name and URL of the retrieved file
- Referrer URL
- Browser and operating system used
- Name of the access providerThe processing of this data is carried out for the following purposes:
- Ensuring a smooth connection setup
- Ensuring system security and stability
- Technical administration of the websiteThe legal basis is Art. 6 para. 1 lit. f GDPR (legitimate interest). This data is not merged with other data sources nor evaluated on a personal basis.4. Processing of Personal Data via Online FormsOn our website, we provide forms, in particular for:
- Prescription requests
- Referral requests
- Contact inquiries
- Digital medical history forms for specific examinationsWithin these forms, the following personal data may be processed:
- Name
- Contact details (e.g., email address, telephone number)
- Information regarding medication
- Information regarding the requested referral
- Medical and health-related information
- Additional information you voluntarily provideThe medical information mentioned constitutes special categories of personal data pursuant to Art. 9 para. 1 GDPR (health data).Processing is carried out exclusively for the purpose of handling your request and for the medical preparation, provision, and documentation of treatment.The legal bases are:
- Art. 6 para. 1 lit. b GDPR (performance of a treatment contract or pre-contractual measures)
- Art. 9 para. 2 lit. h GDPR (processing of health data for purposes of medical care)
- where applicable, Art. 6 para. 1 lit. a GDPR (consent)5. Transmission by EmailThe form data you submit is technically transmitted to our practice via email and further processed there. Data transmission is encrypted using TLS (Transport Layer Security).Please note that despite technical security measures, emails may generally involve security risks. By using our online forms, you expressly consent to this form of transmission.6. Disclosure of DataYour personal data will generally not be disclosed to third parties unless:
- You have given explicit consent
- Disclosure is required to fulfill legal obligations
- It is necessary for medical treatment or billing
- A legal obligation existsNo data is transferred for advertising or tracking purposes.7. Cookies and TrackingOur website does not use tracking tools, analytics services, or marketing cookies. Only technically necessary functions are used, which do not allow any conclusions to be drawn about your person.8. Storage PeriodPersonal data is stored only for as long as necessary for the respective purposes or as long as statutory retention periods apply. Medical data is subject to statutory documentation and retention obligations.9. Data Subject RightsYou have the right:
- To obtain information about your stored personal data (Art. 15 GDPR)
- To request rectification of inaccurate data (Art. 16 GDPR)
- To request erasure of your data, provided no statutory retention obligations prevent this (Art. 17 GDPR)
- To request restriction of processing (Art. 18 GDPR)
- To request data portability (Art. 20 GDPR)
- To withdraw consent at any time (Art. 7 para. 3 GDPR)
- To lodge a complaint with a data protection supervisory authority (Art. 77 GDPR)10. Right to ObjectIf your personal data is processed on the basis of Art. 6 para. 1 lit. f GDPR, you have the right to object at any time on grounds relating to your particular situation (Art. 21 GDPR).11. Data SecurityWe implement appropriate technical and organizational measures to protect your data against loss, manipulation, and unauthorized access. This includes, in particular, encryption of data transmission using TLS.12. Currency and Amendments to This Privacy PolicyThis privacy policy is effective as of February 2025.
Due to legal, technical, or organizational changes, adjustments may become necessary. The current version can be found on our website at:
www.kosiol-kollegen.de/datenschutzAll persons entrusted with data processing are subject to medical confidentiality pursuant to § 203 German Criminal Code (StGB).
External links are marked with "↗".

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✔ Request received.

Thank you for your inquiry! We have received your message and will get back to you as soon as possible. Please note that inquiries can only be processed during our office hours. If you have any questions or require further information, please do not hesitate to contact us by phone.

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Schedule an appointment with Mr. Adam now

Please select your desired appointment type:

• Urgent consultation
• General consultation

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Schedule an appointment with Mr. Kosiol now

Please select your desired appointment type:

• Urgent consultation
• General consultation
• Diving medical examination
• Shock wave therapy

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Book appointments directly online now

Please select your preferred practitioner:

• Maik Kosiol
• Fabian Adam
• Appointments for aesthetic treatments ↗