Pediatric Pulmonologist Prof. Zielen in Frankfurt

Prof. Dr Stefan Zielen MD
Private practice - Allergologist / Pediatric Pulmonologist
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 (early childhood asthma, severe asthma, allergic asthma, new biologic therapies)
  • Vocal cord dysfunction (VCD), Exercise-induced laryngeal obstruction (EILO)
  • Chronic cough, cough-variant asthma, cough tic, Tourette syndrome
  • Allergic diseases (e.g., insect venom allergy, peanut allergy, pollen allergy)
  • Ataxia telangiectasia (Louis Bar syndrome; see
  • Cystic fibrosis
  • Bronchiolitis obliterans (see

Medical Range

Range of diagnostic services

  • Lung function test (spirometry, ozillometry, body plethysmography)
  • Determination of NO in the respiratory air
  • Determination of bronchial irritation sensitivity (asthma test)
  • Allergy testing (prick test, determination of specific IgE)
  • Nasal and bronchial provocation with allergens
  • Food allergy diagnostics and provocation testing
  • Bronchoscopy (endoscopic examination of the airways and lungs)
  • 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

  • Outpatient trials (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 is a specialist in respiratory & allergic diseases at the Institute for Respiratory Diseases "Medaimun."

He was the head of the focus on allergology, pneumology, and cystic fibrosis at the Department of Pediatrics and Adolescent Medicine at the Frankfurt University Hospital for 22 years. Prof. Zielen has published over 280 peer-reviewed papers at Pubmed and has been an expert in asthma, rare lung diseases, and allergic diseases for many years. He treats children, adolescents, and adult patients who come as self-pay patients and those with private health insurance.

Diagnosis and Therapy of Pulmonary Diseases

The Medaimun Institute for Respiratory Diseases has complete clinical diagnostics and treatment of acute and chronic lung diseases in children, adolescents, and adults. Prof. Zielen and his team always care for young patients and their families by following the latest medical knowledge. In addition, the cooperating laboratory offers a wide range of different tests for questionable immune processes and allergies.

Proven Specialist in Hyposensitization

In the special field of respiratory and allergic diseases, Prof. Zielen most frequently treats asthma, other rare lung diseases, and allergic diseases (allergic rhinitis, bee and wasp venom allergy, and peanut allergy). In addition, Prof. Zielen is a proven specialist in hyposensitization (short-term and rush immunotherapy).

Asthma Treatment in Frankfurt

Asthma (bronchial asthma) is a chronic inflammatory disease of the respiratory tract with hypersensitivity to the airways. It comes to attacks of narrowed airways in asthma (bronchial obstruction) due to mucus formation caused by cramping of the airway muscles (bronchial muscles). Often asthma is caused by allergies and infections.

Close cooperation between the pediatricians and the Department of Pediatrics and Adolescent Medicine (KKJM), physiotherapists, dieticians, social counselors, and psychologists guarantees the best possible patient-oriented care for chronically ill patients.

Highest Expertise in the Therapy of Cystic Fibrosis

Cystic fibrosis is a genetic metabolic disease in which mutations at the cellular level (mutated chloride channel) lead to the altered secretion of the body's glands. As a result, patients suffer, among others, from very viscous lung secretions and viscous secretions from the pancreas, liver, and even the reproductive organs. Cystic fibrosis is considered a complex multisystem disease because of these multifaceted symptoms. In addition, a wide variety of organ dysfunctions can occur. Therefore, treatment by an experienced team, such as Prof. Zielen's, is absolutely crucial for young patients' long-term prognosis.

Please, visit the website of the Medaimun Respiratory Institute for more information.


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
2002-1 April 2023 Professor of Pediatrics, Chair of Pediatric Allergology and Pneumology, University of 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
1998-2002 Professor in Pediatrics, Chair for Pediatric Allergology and Pneumology, University of Bonn
2002-present Current Position: Professor of Pediatrics, Chair of Pediatric Allergology, Pneumology, and Cystic Fibrosis, and Head of Research at Medaimun GmbH
As of 1 April 2023 Institute for Respiratory Diseases (Medaimun GmbH;

Medical Team

  • Andreas Wimmers
    General Practitioner
  • Dr Dr Linde
    Pediatrician, Immunologist

Cooperation Partner

  • PD Dr Olaf Eickmeier
    Head of the Cystic Fibrosis Unit, KKJM
  • PD Dr Martin Rosewich
    Allergist and Pediatric Pneumologist in Oberursel
  • Dr A. Lieb
    Allergist and Pediatric Gastroenterologist in Neu Isenburg
  • Prof. Dr nat. Ralf Schubert
    Focus on Allergology Laboratory and Immunology, KKJM


  • The Institute for Respiratory Diseases has beds for partial hospitalization.


Frankfurt (Main) Central Station 2 km
Frankfurt Airport 12 km

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Prof. Dr Stefan Zielen MD
Private practice - Allergologist / Pediatric Pulmonologist

Institute for Respiratory Diseases
Medaimun GmbH
Kennedyallee 97a, D-60596 Frankfurt

T: +49 69 8740 8833
F: +49 69 6959 58909


For Private Patients and Self-Payers:
Tuesday 12:00 PM - 5:30 PM
Wednesday 12:00 PM - 5:30 PM
By appointment

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