Dr. Gregory P. Ranches, MD

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Get to know Pulmonologist & Critical Care Medicine Specialist Dr. Gregory P. Ranches, who serves patients in San Diego, California.

Being a well-versed pulmonologist and critical care medicine specialist, Dr. Ranches treats a wide variety of lung diseases including asthma, COPD, and interstitial lung disease. He also specializes in the treatment of critically ill patients needing various forms of life support. At present, he is affiliated with Scripps Mercy Hospital San Diego & Scripps MD Anderson Cancer Center.

For the non-invasive diagnosis and staging of lung cancer, the doctor is experienced in bronchoscopy and endobronchial ultrasound. 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.

A 2011 graduate of Sidney Kimmel Medical College, Dr. Ranches went on to complete his residency in internal medicine at Scripps Mercy Hospital San Diego in 2014 where he served as Chief Resident. This was followed by a fellowship in pulmonary disease and critical care medicine at Oregon Health Sciences University in 2018. 

Licensed to practice medicine in California and Oregon, he is board-certified in internal medicine, pulmonary disease, and critical care medicine by the American Board of Internal Medicine (ABIM). The ABIM is a physician-led, non-profit, independent evaluation organization driven by doctors who want to achieve higher standards for better care in a rapidly changing world.

A prominent professional in his field, Dr. Ranches has research experience in the epidemiology of non-cystic fibrosis bronchiectasis and nontuberculous mycobacterial infection, and has participated in clinical drug trials for the treatment of these two conditions. He is a member of the Alpha Omega Alpha Honor Medical Society, the American Thoracic Society, and the American College of Chest Physicians.

Pulmonology is a medical specialty that deals with diseases involving the respiratory tract. A pulmonologist is an internal medicine physician who specializes in preventing, diagnosing, and treating conditions and diseases that affect the lungs, bronchial tubes, and the respiratory system, including the nose, pharynx, and throat.

Intensive care medicine, also called critical care medicine, is a medical specialty that deals with critically ill patients who have, are at risk of, or are recovering from conditions that may be life-threatening. It includes providing life support, invasive monitoring techniques, resuscitation, and end-of-life care. Critical care specialists (or intensivists) are trained to provide emergency medical services for patients in critical condition – many can be found providing care within intensive care units.

A San Diego native and proud alumnus of Mira Mesa High School, Dr. Ranches enjoys spending his free time with family and friends.

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