About
William Chang, DO, specializes in Pulmonary Medicine and Critical Care at Paloma Medical Group. He brings osteopathic training to his work in complex respiratory disease and the management of critically ill patients. Dr. Chang works alongside a team of pulmonary specialists serving patients across the Laguna Hills area.
Who is Dr. Chang right for?
Dr. Chang is a good match for patients who need specialist pulmonary care or critical care management. Adults with complex respiratory conditions benefit from his osteopathic and pulmonary training. He works well with patients requiring thorough evaluation of serious lung disease.
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Frequently Asked Questions
Dr. Chang specializes in Pulmonary Medicine and Critical Care. He focuses on the diagnosis and treatment of serious respiratory conditions.
Dr. Chang holds a Doctor of Osteopathic Medicine degree. He brings an osteopathic perspective to his pulmonary and critical care practice.
Dr. Chang practices at Paloma Medical Group, serving patients in Laguna Hills and the surrounding Orange County communities.
Yes. Critical Care is one of Dr. Chang's core specialties. He manages patients facing serious illness alongside his pulmonary clinical work.
Yes. Paloma Medical Group maintains a referral portal for outside physicians. Patients can also contact the practice directly to schedule an appointment.
Doctor profile last updated June 9, 2026