Ngoc P. Ly


Chief of Pediatric Pulmonary Medicine
Pediatric pulmonologist

Dr. Ngoc P. Ly is a specialist in diagnosing and managing acute and chronic respiratory diseases in children. Her expertise encompasses lung function testing, exercise testing and bronchoscopy (passing a flexible instrument into the lungs to view the airways). She has a special interest in caring for children with asthma and other chronic lung diseases.

Ly directs the UCSF Asthma Program, which provides comprehensive diagnosis and treatment services for asthma in children, with a focus on severe asthma. The program's care team includes a nurse practitioner and respiratory therapist certified in asthma education, with the goal of helping patients and their families to better understand and manage the condition. Ly also directs UCSF's fellowship program in pediatric pulmonology.

Ly earned her medical degree from the University of Rochester. She completed her residency in pediatrics at Virginia Commonwealth University School of Medicine. She completed a fellowship in pediatric pulmonary medicine at MassGeneral for Children, an affiliate of Harvard Medical School, and then completed a research fellowship in respiratory and environmental epidemiology at the Channing Laboratory, part of the Harvard T.H. Chan School of Public Health, where she also received her master of public health degree.

  • Education

    University of Rochester School of Medicine and Dentistry, MD, 1998

    Harvard T.H. Chan School of Public Health, MPH, 2006

  • Residencies

    Medical College of Virginia, Pediatric Pulmonary Medicine, 2001

  • Fellowships

    Massachusetts General Hospital, Pediatric Pulmonary Medicine, 2004

    Brigham and Women's Hospital, Respiratory Epidemiology, 2006

  • Board Certifications

    Pediatric Pulmonology, American Board of Pediatrics

  • Academic Title


  • Languages


Clinics I work with (7)


Aerodigestive Clinic

Aerodigestive Clinic

Oakland / San Francisco


Asthma Program

Asthma Program

1825 Fourth St., Sixth Floor
San Francisco, CA 94158

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Cardiopulmonary Exercise Lab

Cardiopulmonary Exercise Lab

San Francisco / Oakland

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Cystic Fibrosis Center

Cystic Fibrosis Center

San Francisco / Oakland / Pleasanton

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Pulmonology Clinic

Pulmonology Clinic

San Francisco / Oakland / Greenbrae / Pleasanton / San Mateo / Walnut Cr...

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Pulmonary Function Lab

Pulmonary Function Lab

San Francisco / Oakland

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Sleep Disorders Center

Sleep Disorders Center

San Francisco / Oakland / Walnut Creek

Where I see patients (12)

    Tender wagging care

    Our therapy dogs spread joy and smiles at the bedside and throughout the hospital.

    Visit Child Life services