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


Clinics I work with

Asthma Clinic

400 Parnassus Ave., Fifth Floor
San Francisco, CA 94143-0359

Pulmonary Practice at Parnassus

400 Parnassus Ave., Fifth Floor
San Francisco, CA 94143

My reviews


Overall Experience
52 Reviews
I feel extremely fortunate to be under the expert care of Dr. Fahy for all my pulmonary issues.
Explained things in a way that was easy to understand
52 Reviews
Did the doctor pay attention to your concerns
52 Reviews
Gave easy to understand instructions about taking care of health problems or concerns
50 Reviews
Knew the important information about your medical history
51 Reviews
The provider showed respect for what you had to say
51 Reviews
The provider spent enough time with me
51 Reviews