For patients:
Radiologische Allianz eGbR
Schäferkampsallee 5-7
20357 Hamburg
Tel.: 040 / 32 55 52-100
Fax: 040 / 32 55 52-222

Make an appointment

Central administration:

Radiologische Allianz
Hindenburgstraße 49
22297 Hamburg
Tel.: 040 / 32 55 52-100
Fax: 040 / 32 55 52-222


You are welcome to contact us directly.

To do so, please write us an e-mail at or
use the e-mail addresses of the contact persons.
Your request will then be assigned immediately.


Your contact persons are:


Request to the management

Prof. Dr. med. Jörn Sandstede, Geschäftsführer Radiologische Allianz eGbR
+49 (40) 32 55 52-570


Dr. med. Christian Giro, PD Dr. med. Jörn Lorenzen,
Dr. med. Martin Simon, MaHM, Stellv. Geschäftsführer Radiologische Allianz eGbR
+49 (40) 32 55 52-100


Management consultant and
Head of Project Management

Franziska Schröder




Human Resources

Personnel management
Silvia Anthony


Medical staff

Dr. med. Jörg Gellißen, Facharzt für Radiologie


Non-medical staff / Recruiting

Lena Aleksa-Zapart


Recruiting / clinical traineeships, internships, job shadowing

Carina Schmidt


Head of Practice Organisation and Head of Services
(Billing and Appointment Service Centre)


Head of practice management

Acting Head of Practice Management
Sebastian Schäffler


Representative for medical device safety according to. § 6 MPBetreibV

Sonja Sagemann
Sven Schnabel


Complaint management


Accounting & Bookkeeping

Team leadership Ann-Kathrin Schmidt

Billing PKV, contact for insurance companies

Dr. med. Martin Simon, MaHM


Individual enquiries billing PKV


Individual enquiries Billing GKV


Status July 2023