Gregory Ranches, MD

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Dr. Gregory Ranches, MD


501 Washington St
Ste 725
San Diego, CA 92103
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Accepts new patients


  • Critical Care Medicine
  • Pulmonary Disease


Gregory P. Ranches, MD, is a pulmonologist and critical care medicine specialist. He treats a wide variety of lung diseases including asthma, COPD, interstitial lung disease and also specializes in the treatment of critically ill patients needing various forms of life support.

In addition, he has specialized training in the diagnosis and treatment of non-cystic fibrosis bronchiectasis, cystic fibrosis, nontuberculous mycobacterial infection and lung cancer/pulmonary nodules. He is experienced in bronchoscopy and endobronchial ultrasound for the non-invasive diagnosis and staging of lung cancer.  

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Board Certifications

  • American Board of Internal Medicine, Critical Care Medicine, 2018
  • American Board of Internal Medicine, Pulmonary Disease, 2017
  • American Board of Internal Medicine, Internal Medicine, 2014

Medical Education

  • Jefferson Medical College, MD, 2011


  • Scripps Mercy Hospital San Diego, Internal Medicine, 2014


  • Oregon Health Sciences University, Pulmonary Disease & Critical Care Medicine, 2018
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