Pediatric Pulmonologist Prof. Zielen in Frankfurt

Prof. Dr Stefan Zielen MD
Director / Senior Consultant
Specialist in Respiratory and Allergic Diseases in Children and Adolescents
Frankfurt, Germany

Frankfurt University Hospital - Department of Paediatrics Focus on allergology, pulmonology, and cystic fibrosis - Prof. Dr Stefan Zielen

Treatment Focus

  • Bronchial asthma (severe asthma, allergic asthma, and new therapies; see
  • Vocal cord dysfunction (VCD), exercise induced laryngeal obstruction (EILO)
  • Chronic cough, cough tick, Tourette's syndrome
  • Allergic diseases (e.g. insect venom allergy, peanut allergy)
  • Ataxia telangiectasia (Louis-Bar syndrome; see
  • Cystic fibrosis
  • Bronchiolitis obliterans (see   

Medical Range

Range of diagnostic services

  • Pulmonary function test (spirometry, body plethysmography, LCI)
  • Determination of NO from the breathing air 
  • Determination of bronchial sensitivity to stimuli (asthma test)
  • Stress when running in cold weather
  • Bronchial provocation with allergens
  • Food allergy diagnosis and provocation testing 
  • Sweat test determination to exclude cystic fibrosis
  • X-ray diagnosis, HR-CT
  • pH analysis to exclude gastro-oesophageal reflux
  • Bronchoscopy (endoscopic examination of the airways and lungs)
  • Gastroscopy (endoscopic examination of the oesophagus, stomach, and duodenum)
  • In collaboration with colleagues of other disciplines, radiological examinations such as computed tomography (CT), magnetic resonance imaging (MRI), or special laboratory tests can be performed.


Range of therapeutic services

  • Ambulatory care unit (new therapies; see
  • Monoclonal antibodies
  • Specific immunotherapy (rush and short-term therapy)
  • Interdisciplinary care of ataxia and cystic fibrosis patients (including diet counselling and physical therapy

About Prof. Dr Stefan Zielen MD

Prof Dr Stefan Zielen MD is a specialist in respiratory and allergic diseases and director of allergology, pulmonology, and cystic fibrosis in the Department of Paediatrics at the Frankfurt University Hospital. Dr Zielen has published over 180 peer reviewed articles. He is an expert in asthma, rare lung diseases, and allergic diseases. He treats children, adolescents, and adults.

The department features complete diagnostics and treats acute and chronic lung diseases in children, adolescents, and adults. With a team of specialised doctors, it is one of the leading working groups in this field. Dr Zielen and his team care for young patients and their families using the latest medical knowledge. For immune processes or allergies, the clinic's own laboratory offers a wide range of tests.

In the special area of respiratory and allergic diseases, Dr Zielen frequently treats asthma and other rare lung diseases as well as allergic diseases (allergic rhinitis, bee/wasp stings, and and peanut allergy). Dr Zielen is a proven specialist in hyposensitisation (short-term and rush immunotherapy).

Asthma is a chronic inflammatory disease of the airways with hypersensitivity of the airways. Asthma involves a narrowing of the airways (bronchial obstruction) caused by mucus or spasms of the bronchial muscles. Asthma is often triggered by allergies and infections.

The Department of Paediatrics also features a highly specialised, interdisciplinary outpatient clinic for cystic fibrosis and the rare disorder, ataxia telangiectasia (

Close cooperation between paediatricians, physiotherapists, dieticians, social counsellors, psychologists, and nurses guarantees the best possible care of chronically ill patients.

Cystic fibrosis is a genetic metabolic disorder caused by mutations at the cellular level (mutant chloride channel) and leads to altered secretion of the glands. Patients suffer from viscous pulmonary secretions as well as viscous secretions of the pancreas, liver, or sexual organs. Because of these versatile symptoms, cystic fibrosis is classified as a complex multi-system disease. It can lead to various malfunctions of the organs. Treatment by an experienced team – like that of Dr Zielen – is therefore crucial for the long-term prognosis of young patients.

In the gastro-enterological outpatient clinic, which is also led by Dr Zielen, children with diseases of the gastrointestinal tract are treated. Endoscopy (gastroscopy, colonoscopy),  magnetic resonance imaging (MRI), sonography (ultrasound), and many specialised laboratory tests are available for the diagnosis of the pathologies.

The Department of Paediatrics at the Frankfurt University Hospital features numerous special areas such as neonatology (new and neonatal unit, Level 1), neurology, oncology, haematology, and paediatric cardiology (congenital heart disease of the child). The university hospital also features an interdisciplinary intensive care ward in which the maximum care of critically ill adolescents is guaranteed.

For young patients, visiting the hospital can be frightening. Being separated from their parents does not help. In the clinic of Dr Zielen, parents are therefore allowed to remain with their sick children.

For more information, please visit Prof. Zielen's website.

Curriculum Vitae


1968-75 High School Frankfurt Matura 1975
1975-83 University J.W. Goethe-Universität Frankfurt
1983 Graduation from Medical School, Physician



1989 M.D. Board certified in Pediatrics 1989
1991 M.D. Board certified in Allergology
1994 PHD (Thesis): T-Cell Regulation in Patients with Common variable Immunodeficiency
1996 M.D. Board certified in Pediatric Pneumology
1998-2002 Professor of Pediatrics, Chair for Pediatric Allergy and Pneumology, University Bonn
2002-today Professor of Pediatrics, Chair for Pediatric Allergy and Pneumology, University Frankfurt



1985-1990 Children Hospital der J.W. Goethe-Universität
1990-1991 Research Fellow DKFZ Heidelberg, Germany
1991-1998 Senior Physician Pediatric Allergy and Pneumology
1998-2001 Professor of Pediatrics, Chair for Pediatric Allergy and Pneumology, University Bonn
2002-today Current position: Professor of Pediatrics, Chair for Pediatric Allergy, Pneumology and Mukoviszidose And Principal Investigator at Medaimun GmbH

Medical Team

  • Dr J. Schulze MD
    Deputy Chief Consultant/Head of Bronchoscopy
  • Dr Olaf Eickmeier MD
    Head of Cystic Fibrosis
  • Dr K. Blümchen MD
    Food Allergies
  • Dr M. Rosewich MD
  • Dr A. Lieb MD
  • Dr. Ralf Schubert
    Allergologic Laboratory and Immunology


  • The wards of the hospital feature age-appropriate single and double rooms
  • For children under seven years old or in the case of severe diseases, the admission of an accompanying person is covered by health insurance.


Frankfurt (Main) Central Station 2.5 km
Frankfurt Airport 9 km

Information About Frankfurt

Specialist doctors and medical centres in Frankfurt

Frankfurt is one of the most important financial centres in Germany and Europe. With its skyscrapers unique in Europe, Frankfurt rises above the Main on an area of ​​approximately 243 square kilometres and at its centre accommodates about 700.000 inhabitants. Frankfurt was officially mentioned for the first time in 794 and played a decisive role during the imperial age. Much of the city was destroyed by bombing in World War II by the Allies. The historic old town, however, is preserved, just as its culturally important role in Europe. Today the old town is a tourist magnet that repeatedly attracts visitors from all over the world.


Benefits Programme on Site

Lufthansa Mobility Partner

PRIMO MEDICO is an accredited partner of Lufthansa Health & Medical. Benefit as a member or user of PRIMO MEDICO from special terms that provide you and your travelling companion with discounts on a variety of fares offered by Lufthansa, SWISS, Austrian and Brussels Airlines.


Agent CS

Agent CS creates space so that you can concentrate on your most important tasks - an innovative service agency which uses existing networks in a wide variety of areas to provide you with a solution customised for you.


Professional Aviation Solutions

Professional Aviation Solutions is a young, motivated team of experienced aircraft charter experts, which collaborates with only the most reputable airlines.


Wertheim Village

Wertheim Village, a special kind of luxury outlet, is nestled in the picturesque vineyards of Franconia. With over 110 designer boutiques, Wertheim Village offers reductions of up to 60% compared to the previously recommended retail price.


Casino Wiesbaden

Experience magical moments: With the highest visitor numbers and payout rates, the Wiesbaden Casino is number one at the Rhine-Main region. So you should definitely plan a trip to one of the most beautiful casinos in Europe. Enjoy the stylish ambience and the thrills. Wheather a classic game or Vegas flair at the slot machines. You can look forward to an unforgettable evening.


Hotel Roomers Frankfurt

A place that inspires the imagination and stimulates creativity. A revelation of burlesque elegance in the heart of the buzzing metropolis of Frankfurt.



Prof. Dr Stefan Zielen MD
Director / Senior Consultant

Frankfurt University Hospital
Department of Paediatrics, focus on allergology, pulmonology, and cystic fibrosis
Theodor-Stern-Kai 7, D-60590 Frankfurt

T: +49 69 8740 8833
F: +49 69 6301 83349


Tuesdays 8:30 am to 12:30 pm
Thursdays 8:30 am to 4:00 pm
By appointment

OUR GUIDELINES Our guidelines

At PRIMO MEDICO, you will only find reputable medical authorities who were selected according to strict guidelines. Experience, innovative treatment techniques or reputation in science and research play an important role here.