John V. Fahy

MD MS

Pulmonologist

Dr. John Fahy is a pulmonologist who has a special interest in treating patients with asthma and serves as director of UCSF’s severe asthma clinic. He also cares for critically ill patients in the intensive care units.

Fahey directs the UCSF Airway Clinical Research Center. His research receives funding from the National Institutes of Health and various foundations, as well as contracts from biotechnology and pharmaceutical companies. The center studies the underlying disease mechanisms of asthma, cystic fibrosis and other airway diseases.

Fahy earned his medical degree at University College Dublin After internal medicine training in Dublin, he completed fellowship training in pulmonary and critical care medicine at UCSF. He joined the faculty in 1993.

He is the Michael S. Stulbarg Endowed Chair in Pulmonary Medicine.

  • Education

    University College, Dublin Ireland, 1985

  • Residencies

    University College Dublin, Internal Medicine, 1989

  • Fellowships

    UCSF, Pulmonary Medicine, 1992

  • Board Certifications

    Internal Medicine, American Board of Internal Medicine

  • Academic Title

    Professor

Conditions I specialize in

  • Severe asthma

Where I see patients (2)

    My reviews

    5.0

    Overall Experience
    53 Ratings
    Explained things in a way that was easy to understand
    53 Ratings
    Did the doctor pay attention to your concerns
    51 Ratings
    Gave easy to understand instructions about taking care of health problems or concerns
    52 Ratings
    Knew the important information about your medical history
    51 Ratings
    The provider showed respect for what you had to say
    52 Ratings
    The provider spent enough time with me
    52 Ratings
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    Selected research

    Decorative Caduceus

    Tissue Immune Interaction in Nasal Polyposis

    This study enrolls chronic rhinosinusitis patients with and without nasal polyps. Investigators aim to compare the percentage of ILC2 and tuft cells present in nasal tissue and secretions between those who present with nasal polyp...

    Recruiting

    Decorative Caduceus

    Characterizing Asthma Sputum Elasticity in the UCSF Severe Asthma Research Program

    Lung function as a measure of asthma severity.

    Recruiting

    Decorative Caduceus

    PrecISE (Precision Interventions for Severe and/or Exacerbation-Prone Asthma) Network Study

    Assessed prior to bronchodilator administration. Efficacy analyses will compare the end-of-period outcome values between test treatment and placebo.

    Recruiting

    Decorative Caduceus

    Characterization of Adult Subjects for Asthmatic Research Studies

    We will measure various indicators of airway inflammation and compare them with various phenotypic characteristics.

    Recruiting

    Decorative Caduceus

    Blood Lymphocytes in Asthmatics Treated With Therapeutic Proteins

    The investigators will compare lymphocyte counts in healthy controls to asthmatics on and off therapeutic proteins.

    Recruiting

    Decorative Caduceus

    CF And Effects of Drugs Mixed Ex Vivo With Sputum for Mucolytic Treatment

    Recruiting

    Decorative Caduceus

    The Effect of NAC on Lung Function and CT Mucus Score

    The primary outcome is the % change in FEV1 from the start to the end of each two-week treatment period (either placebo or 20% NAC).

    Recruiting

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