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Summary
Dr. Mark Johnson treats congenital heart disease, athlete's heart syndrome, and atrial septal defect, and performs dobutamine stress echocardiogram, Doppler echocardiogram, and transthoracic echocardiogram. He has practiced cardiology for 44 years and is affiliated with Saint Louis Children's Hospital, Barnes Jewish Hospital, Missouri Baptist Medical Center, Memorial Hospital Belleville, Barnes Jewish Saint Peters Hospital, and Memorial Hospital Shiloh. Dr. Johnson earned his medical degree from Johns Hopkins University School of Medicine and sees patients in Saint Louis, Missouri, Saint Peters, Missouri, Belleville, Illinois, and O'Fallon, Illinois.
Overview based on verified provider data
Quick Facts
- 44 years of experience
- speaks English
- Johns Hopkins University School Of Medicine
- 1 specialty
- 1 area of expertise
- 7 hospital affiliations
- 7 office locations
- Male
Office Locations
Dr. Mark Charles Johnson has 7 locationsWashington University Pediatric Multispecialty Center Memorial East
1414 Cross St Ste 140aShiloh, IL 62269 Tel: (314) 454-5437
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  | |
| Dr. Mark Charles Johnson, MD | Dr. Kunal Gurav, MD | Ramona B Chebli | Dr. Dipika Menon, MD |
| Cardiology | Cardiology | Nurse Practitioner | Cardiology |
| Accepts New Patients | |||
| 44 Years of Experience | 18 Years of Experience | 14 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English, Hindi, Marathi | Speaks English | |
| Saint Louis , MO | Saint Louis , MO | Fenton , MO | Saint Louis , MO |
| Med School: Johns Hopkins University School Of Medicine | Med School: SETH GS MEDICAL COLLEGE | Med School: M S Ramaiah Medical College | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Mark Charles Johnson
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Mark Charles Johnson has the following specialty
Specialty Expertise
Dr. Mark Charles Johnson has the following area of expertise
Certifications, License, & Education
44 Years Experience
Dr. Mark Charles Johnson holds an expired medical license in the states of Illinois and Missouri.
Medical License
Medical Doctor with an expired medical license in the state of Illinois that expired in 2026 and an expired medical license in the state of Missouri that expired in 2025.
Education & Training
Medical School
Graduated from Johns Hopkins University School Of Medicine in 1982.
NPI Number
Dr. Johnson's NPI number is 1497796957.
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Frequently Asked Questions
- Does Dr. Mark Johnson accept my insurance?
- You can see the insurance plans that Dr. Mark Johnson accepts on their Vitals profile.
- What languages does Dr. Mark Johnson speak?
- Dr. Mark Johnson speaks English.
- Which hospitals is Dr. Mark Johnson affiliated with?
- Dr. Mark Johnson is affiliated with Saint Louis Childrens Hospital, Memorial Hospital Belleville, Barnes Jewish Hospital, Missouri Baptist Medical Center, Barnes Jewish Saint Peters Hospital, Memorial Hospital Shiloh, and Barnes Jewish Saint Peters Hospital.
- Does Dr. Mark Johnson accept virtual/telehealth appointments?
- Dr. Mark Johnson has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Where is Dr. Mark Johnson's office located?
- Dr. Mark Johnson's office is located at 1 Childrens Pl, Saint Louis, MO, 63110.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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