See All Pulmonary Doctors / Pulmonologists in O Fallon, IL
Dr. Zachary Berg, MD

Dr. Zachary Berg, MD

Pulmonary Disease M
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Accepting New Patients


Dr. Zachary Berg, MD is a pulmonologist in O Fallon, IL. Dr. Berg completed a residency at Mayo Clinic Scottsdale Arizona. He currently practices at HSHS Medical Group - O'Fallon and is affiliated with HSHS St. John's Hospital.


  • Saint Louis University Hospital, Fellowship Hospital
  • Mayo Clinic Scottsdale Arizona, Residency Hospital
  • University Of Missouri, Columbia, Mo, Undergraduate School


  1. HSHS Medical Group - O'Fallon

    1. 1
      HSHS Medical Group Multispecialty Care - St. Elizabeth's
      3 Saint Elizabeth Blvd Ste 5000, O Fallon, IL 62269 Existing Patients: (618) 641-5803
  1. HSHS Medical Group - Greenville

    1. 2
      HSHS Medical Group Pulmonology Specialty Clinic - Greenville
      200 Health Care Dr, Greenville, IL 62246 Existing Patients: (618) 641-5803
  1. HSHS Medical Group Specialty Clinic Urology - Edwardsville

    1. 3
      HSHS Medical Group Specialty Clinic Urology - Edwardsville
      1188 S State Route 157, Edwardsville, IL 62025 Existing Patients: (618) 641-5803

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Dr. Zachary Berg, MD
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Frequently Asked Questions

Dr. Berg frequently treats Acidosis, Anemia, and Asthma.  

Hospital Affiliations

  • HSHS St. John's Hospital