Print Doctors who treat this condition edit search filters Close Narrow your search By location Jacksonville, FL By last name There are no doctors whose last name begins with the letter A A Find a doctor whose last name begins with the letter B B Find a doctor whose last name begins with the letter C C Find a doctor whose last name begins with the letter D D There are no doctors whose last name begins with the letter E E There are no doctors whose last name begins with the letter F F Find a doctor whose last name begins with the letter G G Find a doctor whose last name begins with the letter H H There are no doctors whose last name begins with the letter I I active Find a doctor whose last name begins with the letter J J There are no doctors whose last name begins with the letter K K Find a doctor whose last name begins with the letter L L There are no doctors whose last name begins with the letter M M There are no doctors whose last name begins with the letter N N There are no doctors whose last name begins with the letter O O There are no doctors whose last name begins with the letter P P There are no doctors whose last name begins with the letter Q Q Find a doctor whose last name begins with the letter R R There are no doctors whose last name begins with the letter S S Find a doctor whose last name begins with the letter T T There are no doctors whose last name begins with the letter U U There are no doctors whose last name begins with the letter V V Find a doctor whose last name begins with the letter W W There are no doctors whose last name begins with the letter X X There are no doctors whose last name begins with the letter Y Y There are no doctors whose last name begins with the letter Z Z Reset all filters Displaying 1-1 out of 1 doctors available Last Name Initial: J Margaret M. Johnson, M.D. Pulmonologist Critical Care Specialist Jacksonville, FL Areas of focus: Bronchoscopy, Lung cancer, Cystic fibrosis, Bronchiectasis, Asthma attack, Pulmonary embolism, Nontuberculous mycobacte...ria lung disease Show more areas of focus for Margaret M. Johnson, M.D. By Mayo Clinic Staff Request an Appointment at Mayo Clinic Diagnosis & treatment Aug. 02, 2019 Print Share on: FacebookTwitter Related Albuterol side effects Asthma attack Asthma attack video Asthma: Colds and flu Show more related content Associated Procedures Nitric oxide test for asthma Peak flow meter Spirometry Products & Services Book: Mayo Clinic Book of Home Remedies Book: Mayo Clinic Guide to Raising a Healthy Child Show more products and services from Mayo Clinic Asthma attackSymptoms & causesDiagnosis & treatmentDoctors & departments Research: It's All About Patients CON-20198829 Patient Care & Health Information Diseases & Conditions Asthma attack