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Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery.

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Displaying 1-3 out of 3 doctors available

Last Name Initial: J

  1. Jacob C. Jentzer, M.D.

    Jacob C. Jentzer, M.D.

    1. Internist
    2. Critical Care Specialist
    3. Echocardiographer
    1. Rochester, MN
    Areas of focus:

    Central venous catheterization, Intensive care, Thoracentesis, Endotracheal intubation, Pulmonary vein angioplasty, Hea...rt attack, Sudden cardiac arrest, Sepsis, Cardiogenic shock, Shock, Ventricular arrhythmia, Respiratory failure, Cardiorenal syndrome, Kidney failure, Decompensated heart failure

  2. John Joerns, M.D.

    John Joerns, M.D.

    1. Internist
    2. Critical Care Specialist
    3. Transplant Pulmonologist
    1. Rochester, MN
    Areas of focus:

    Lumbar puncture, Central venous catheterization, Bronchoscopy, Thoracentesis, Airway management, Chest tube placement, ...Transplant rejection, Transplant disorder, Advanced lung disease

  3. Margaret M. Johnson, M.D.

    Margaret M. Johnson, M.D.

    1. Pulmonologist
    2. Critical Care Specialist
    1. Jacksonville, FL
    Areas of focus:

    Bronchoscopy, Lung cancer, Pulmonary embolism, Asthma attack, Cystic fibrosis, Bronchiectasis, Nontuberculous mycobacte...ria lung disease

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Nov. 20, 2025

Pulmonary Medicine

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