Jonathan Weissler, M.D.

Jonathan Weissler, M.D.

Internal Medicine Vice Chair of Clinical Affairs, UT Southwestern University Hospitals

  • James M. Collins Professorship in Biomedical Research
  • Internal Medicine - Pulmonary and Critical Care Medicine
  • Hospitalist (In-Patient Care)
  • Lung (Pulmonary) Disorders


Jonathan Weissler, M.D., is a Professor in UT Southwestern Medical Center’s Department of Internal Medicine and holds the James M. Collins Professorship in Biomedical Research. He is Chief of Medicine for UT Southwestern University Hospitals.

His areas of clinical expertise include pulmonology and critical care medicine. In his role as Chief of Medicine, Dr. Weissler supervises the housestaff, residents, and medical students at UT Southwestern University Hospitals.

Dr. Weissler earned his medical degree from New York University School of Medicine and completed his residency and fellowship in pulmonary diseases at UT Southwestern.

He joined the UT Southwestern faculty in 1985. In his career, he has served as Chief of Pulmonary and Critical Care Medicine and Director of Respiratory Therapy at Parkland Memorial Hospital. Dr. Weissler is active in training the next generation of pulmonary and critical care doctors through UT Southwestern’s academic programs.

Among many honors and awards, Dr. Weissler has been recognized as a Best Doctor by D Magazine and a Super Doctor by Texas Monthly.

Meet Dr. Weissler

Pulmonologist and Critical Care Expert

Pulmonologist Jonathan Weissler, M.D., wears many hats at UT Southwestern Medical Center – from caring for critically ill patients to serving as Chief of Medicine for UT Southwestern's University Hospitals – but he has only one goal: to provide the best care possible.

In his role as a pulmonary critical care specialist, Dr. Weissler – a Texas Monthly Super Doctor – cares for patients in the Intensive Care Unit (ICU) who have serious infections and respiratory failure.

Outside the ICU, he also sees patients with a variety of general lung problems, from chronic obstructive pulmonary disease (COPD) to pneumonia and pulmonary fibrosis.

Since he joined UT Southwestern in 1985, Dr. Weissler has seen the Medical Center grow in many ways, but especially in terms of patient care. UT Southwestern now treats many more patients and specializes in much broader areas of care.

Our goal is to make your experience at the hospital as brief, as safe, and as effective as possible."

"We've become more focused on measuring the quality of care that we deliver and on improving medical care for the patients whom we serve," he says.

Within pulmonology, Dr. Weissler says UT Southwestern's team of lung experts offers a depth of knowledge that is among the best available, and that depth attracts patients from around the country.

"We have one of the most highly regarded group of pulmonary doctors at any institution in the United States," he says.

Dr. Weissler also takes great pride in the physicians he has trained and recruited to help make UT Southwestern one of the top academic medical centers in the nation.

"I'm proud of their abilities and the fact that they are able to help people," Dr. Weissler says.

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Education & Training
  • Fellowship - UT Southwestern Medical Center (1982-1985), Pulmonary Diseases
  • Medical School - New York University School of Medicine (1975-1979)
  • Residency - UT Southwestern Medical Center (1979-1982), Internal Medicine
Professional Associations & Affiliations
  • Texas Medical Association
  • Dallas County Medical Society
  • American Thoracic Society
  • American College of Physicians
Honors & Awards
  • D Magazine Best Doctor 2020
  • America's Top Doctors 2002-2013
  • Best Doctors in America 2003-2013
  • President, Association of Subspecialty Professors 2004-2005
  • President, Association of Pulmonary and Critical Care Medicine Program Directors 1999-2000
  • President, American Federation for Clinical Research 1993-1994
Books & Publications
  • Transcriptional Regulation of Surfactant proteins
  • Severe Asthma
  • Idiopathic Pulmonary Fibrosis

Clinical Focus

  • Hospitalist (In-Patient Care)
  • Lung (Pulmonary) Disorders
  • General Pulmonology

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Q&A by Dr. Weissler