Sagar Kumar, M.D. joins USA Health pulmonary and critical care medicine division
“It’s a specialty where you often encounter complex and challenging cases that require critical thinking and decisive action, sometimes being the last line of support in life-or-death situations,” said Sagar Kumar, M.D. “That sense of responsibility and the ability to make a meaningful difference for patients and their families really motivate me.”
By Michelle Ryan-Day
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USA Health continues to expand its pulmonary and critical care medicine division with the addition of Sagar Kumar, M.D.

Originally from Pakistan, Kumar comes from a family of physicians, including his father who still actively practices medicine in his home country.
“That environment instilled in me a deep respect for the medical profession from an early age,” Kumar said. “During my residency, I developed a strong interest in pulmonary and critical care medicine, which led me to pursue specialized training in this field.”
After moving to the United States in 2019, Kumar completed his internal medicine residency and went on to pursue a fellowship in pulmonary and critical care medicine at USA Health University Hospital. He completed medical school at Dow Medical College in Karachi, Pakistan.
It was there that he developed advanced skills in managing critically ill patients and performing a range of pulmonary and vascular procedures, including bronchoscopy, robotic bronchoscopy, endobronchial ultrasound (EBUS), and right heart catheterization.
Kumar’s clinical interests include pulmonary hypertension and other complex pulmonary diseases, and he remains actively involved in research through the USA Center for Lung Biology. His work has been featured in national conferences and peer-reviewed publications.
He was drawn to pulmonary and critical care medicine for its intellectually stimulating nature and the opportunity to care for patients in high-acuity, life-saving situations.
“It’s a specialty where you often encounter complex and challenging cases that require critical thinking and decisive action, sometimes being the last line of support in life-or-death situations,” he said. “That sense of responsibility and the ability to make a meaningful difference for patients and their families really motivate me.”
Equally passionate about academic medicine, Kumar chose USA Health because of its strong emphasis on education and collaboration.
“Practicing in an academic health system allows me to contribute to the education of future physicians while continuing to stay updated with advancements in medical science,” he said. “The academic setting encourages continuous growth and fosters a collaborative environment that I find incredibly rewarding. I look forward to growing alongside my colleagues, contributing to patient care, and playing a role in shaping the next generation of physicians.”
Kumar, who is board-certified by the American Board of Internal Medicine, serves as an assistant professor of internal medicine in the Frederick P. Whiddon College of Medicine.
He has experience treating acute respiratory distress syndrome, pulmonary hypertension, advanced emphysema, lung cancer, pneumothorax, pneumonia, interstitial lung disease, tracheal stenosis, and more.
Kumar is accepting new patients at the Mastin Internal Medicine Clinic located at 2451 University Hospital Drive, Suite 102 in Mobile. To schedule an appointment, call 251-470-5890.




