Martin Lehn, MD:

Dr. Lehn is board certified in pediatric cardiology and in pediatric and adolescent medicine. He ist also a certified specialist for the management of adults with congenital heart defects.  He received his medical degree at the University of Gießen, Germany in 1985.

Part of his medical training he spent at the Harvard University Medical School, Boston, the Boston University, and the University of Pennsylvania, Philadelphia, USA.

After his medical training he worked as an emergency room physician at the 97th US-General Hospital in Frankfurt, Germany.

He then went to Boston with his wife to become a fellow in medicine at the Brigham and Women’s Hospital and the Harvard Medical School, Boston from 1986 through 1990. He completed his pediatric residency and his fellowship of pediatric cardiology at the University of Bonn, Children’s Medical Center, Germany.

In 2000, he joined the Cardiology Associates of Dortmund with his own private practice. Dr. Lehn lives in the Dortmund area with his wife and has two children.

Memberships: European Society of Pediatric Cardiology. German Society of Pediatric Cardiology. German Society of Cardiology. German Society of Pediatric and Adolescent Medicine. Society of Sports Medicine (NRW)




Our staff welcomes you! It is well trained in all non-invasive examinations like taking the vitals and conducting ECGs, pulmonary function testing, cardiopulmonary exercise testing etc.



(cardiologists and internal medicine specialists)

K. Kubisch, MD
M. Stratmann, MD
R. Kuhnert, MD
Y. Onay, MD
Osman Gürocak, MD




Kampstrasse 45
44137 Dortmund, Germany


Satellite Clinic in Witten
Praxisfiliale am Marien-Hospital
Marienplatz 2
58452 Witten, Germany 

(+49) 231 95 80 89-0

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Cardiology Associates of Dortmund. Martin Lehn, MD. Phone: (+49/0) 231-95 80 89-0