Dr. Petersen graduated from the Saint Louis University School of Medicine in 1980. He works in Chesterfield, MO and 2 other locations and specializes in Gastroenterology. Dr. Petersen is affiliated with Mercy Hospital St Louis, SSM Health St Joseph Hospital Lake Saint Louis and St Lukes Hospital.
Medical School: Saint Louis University School of Medicine; Graduated 1980
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*This physician has multiple office locations. See Office Information for details.