David Janssen, MD - BJC Healthcare
Infectious Disease • Belleville, IL • Since 1958
About
David Janssen, MD is not listed among the executive team or notable physicians on the Memorial Hospital Belleville and Memorial Hospital Shiloh page for BJC Healthcare. The page information centers on Memorial Regional Health Services (MRHS) as the parent nonprofit organization within BJC HealthCare, with leadership including Mark J. Turner as president, and various MRHS executives. The hospitals operate under BJC HealthCare, a large nonprofit system headquartered in Belleville, founded in 1958, offering services through Memorial Hospital Belleville, Memorial Hospital East, and Memorial Care Center. If you’re seeking details about Dr. Janssen’s role or affiliation, the provided page does not mention him; you may want to search specifically for his profile within BJC HealthCare or contact the hospitals directly at the listed numbers (618) 607-1000 or (618) 233-7750.
Clinic Type
Infectious Disease
Address
1 Premier Infectious Disease Consultants - O'Fallon, 20 Progress Point Parkway Suite 206, O'Fallon, MO 63368
Phone
636-344-2014
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Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Team
Insurance & Payment
Insurance, Self-Pay
Languages Spoken
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FAQs
What is the contact information for scheduling?
Get directions or contact the office at the listed phone number.
Do you accept insurance?
Yes, accepted insurance plans are listed under Accepted Insurance Plans and include Aetna, Blue Cross Blue Shield, Cigna, First Health Network, Humana, and more.
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- US News & World Report: 3 out of 5 stars (8 reviews total)
Patients praise
- compassionate provider
- clearly explains treatment options
- works closely with patients to create personalized plans
Common complaints
- low provider attitude score
- low patient loyalty rating
"Dr. Janssen is a compassionate provider who clearly explains the diagnostic process and treatment options, working closely with patients to create personalized..."
— BJC Healthcare provider profileSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- David Janssen, MD - BJC Healthcare — Oct 1, 2025
- Dr. David L. Janssen, MD - Radiation Oncologist in Victoria, TX — May 14, 2026
- Where to find Belleville IL area hospital safety grades | Belleville News-Democrat — May 8, 2026
- See the safest & least safe hospitals in metro-east: Report | Belleville News-Democrat — Nov 19, 2025
- BJC GI lab promotes preventive screenings in Illinois — Mar 9, 2026
Information sourced from the clinic's website as of July 11, 2026.
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