Site Notice

Information pursuant to § 5 TMG

dr. med. dr. med. dent. Hans Krehn
Hohe Bleichen 10
20354 Hamburg

In the of the practice of founder dr. med. dr. med. hans krehn, the following doctors and dentists are working:

  • dr. med. dr. med. dent hans krehn, specialist for oral and maxillofacial surgery, dentist (practice owner and founder)
  • julian kraume, doctor and student of dentistry, training assistant in the field of oral and maxillofacial surgery (hired doctor)
  • modar hammoud, specialist in oral surgery (employed dentist)

The professional titles doctor, dentist and specialist for mouth-, jaw- and facial surgery are lent in the Federal Republic of Germany.


Phone: +49 40 350175-0
Telefax: +49 40 350175-17

Supervisory authority

Ärztekammer Hamburg – Körperschaft des öffentlichen Rechts
Weidestr. 122 b
22083 Hamburg

Zahnärztekammer Hamburg
Weidestraße 122 b
22083 Hamburg
Tel.: 040 202299-0
Fax: 040 202299-400

Job title and professional regulations

Job title: Ärzte
Competent chamber: Ärztekammer Hamburg – Körperschaft des öffentlichen Rechts
Authorisation granted by: Deutschland
The following professional regulations apply: Hamburgisches Kammergesetz für die Heilberufe (HmbKGH)
Regulations available at:

Kassenärztliche Vereinigung Hamburg (KV Hamburg)
Humboldtstraße 56
22083 Hamburg
Telefon: 040 / 22 80 2 – 0
Telefax: 040 / 22 80 2 – 420

Regulations available at:

Job title: Zahnärzte
Competent chamber: Zahnärztekammer Hamburg
Authorisation granted by: Deutschland
The following professional regulations apply: Hamburgisches Kammergesetz für die Heilberufe
Regulations available at:

For Dentists:

Zahnärztekammer Hamburg
Weidestraße 122b
22083 Hamburg
040 / 7334050

Kassenzahnärztliche Vereinigung Hamburg (KZV Hamburg)
Katharinenbrücke 1
20457 Hamburg
040 / 361470

The professional regulations and laws for dentists, in particular the professional regulations of the Hamburg Dental Association and the German Dentistry Act can be found under:


Information regarding professional liability insurance

Name and registered office of the insurer:
Deutsche Ärzteversicherung AG
Colonia-Allee 10
51067 Köln

Scope of insurance:

EU dispute resolution

The European Commission provides a platform for online dispute resolution (ODR):
Our e-mail address can be found above in the site notice.

We are not willing or obliged to participate in dispute resolution proceedings before a consumer arbitration board.

Liability for Contents

As service providers, we are liable for own contents of these websites according to Paragraph 7, Sect. 1 German Telemedia Act (TMG). However, according to Paragraphs 8 to 10 German Telemedia Act (TMG), service providers are not obligated to permanently monitor submitted or stored information or to search for evidences that indicate illegal activities.

Legal obligations to removing information or to blocking the use of information remain unchallenged. In this case, liability is only possible at the time of knowledge about a specific violation of law. Illegal contents will be removed immediately at the time we get knowledge of them.

Liability for Links

Our offer includes links to external third party websites. We have no influence on the contents of those websites, therefore we cannot guarantee for those contents. Providers or administrators of linked websites are always responsible for their own contents.

The linked websites had been checked for possible violations of law at the time of the establishment of the link. Illegal contents were not detected at the time of the linking. A permanent monitoring of the contents of linked websites cannot be imposed without reasonable indications that there has been a violation of law. Illegal links will be removed immediately at the time we get knowledge of them.


Contents and compilations published on these websites by the providers are subject to German copyright laws. Reproduction, editing, distribution as well as the use of any kind outside the scope of the copyright law require a written permission of the author or originator. Downloads and copies of these websites are permitted for private use only.
The commercial use of our contents without permission of the originator is prohibited.

Copyright laws of third parties are respected as long as the contents on these websites do not originate from the provider. Contributions of third parties on this site are indicated as such. However, if you notice any violations of copyright law, please inform us. Such contents will be removed immediately.

source disclosures

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Conception and Design

OPUS Marketing GmbH
Am Pfaffenfleck 10
95448 Bayreuth