4.4
8 Ratings with 3 written Reviews
Summary
Dr. Onsager received his bachelor’s degree in Bio chemistry, History and Sociology of Science from the University of Pennsylvania. He completed medical school at Rush Medical College and a general Surgery Residency at the Medical College of Wisconsin Affiliated Hospitals. He completed Fellowship training in cardiothoracic surgery at the University of Wisconsin Hospital and Clinics where he also completed a Thoracic Organ Transplantation Fellowship. An Advanced Fellowship in Adult Cardiac Surgery was completed at the University of Chicago Medical Center. He is a Clinical Assistant Professor in the Division of Cardiothoracic Surgery at Loyola University Medical Center.
Dr. Onsager is happily married. He enjoys tennis, skiing and flying. He is an instrument-rated pilot.
Dr. Onsager is happily married. He enjoys tennis, skiing and flying. He is an instrument-rated pilot.
Quick Facts
- 38 years of experience
- speaks English
- Rush Medical College Of Rush University Medical Center
- 3 written reviews
- 3 specialties
- 8 areas of expertise
- 3 board certifications
- 4 hospital affiliations
- 2 office locations
- Male
Office Locations
Dr. David Ralph Onsager has 2 locationsThe University Of Chicago Medical Center Duchossois Center For Advanced Medicine
5758 S Maryland AveChicago, IL 60637Mon7:30 am - 6:00 pm
Tue7:30 am - 6:00 pm
Wed7:30 am - 6:00 pm
Thu7:30 am - 6:00 pm
Fri7:30 am - 6:00 pm
Sat7:30 am - 6:00 pm
SunClosed
Compare with Similar Doctors
 |  |  |  |
| Dr. David Ralph Onsager, MD | Dr. Di Fan, MD | Dr. Prerna Kumar, MD | Dr. Deep Kumar Aggarwal, MD |
| Thoracic Surgery | Thoracic Surgery | Internal Medicine | Surgery |
| Accepts New Patients | |||
| 38 Years of Experience | 43 Years of Experience | 17 Years of Experience | 10 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks Spanish, Russian | ||
| Chicago , IL | Chicago , IL | Chicago , IL | Berwyn , IL |
| Med School: Rush Medical College Of Rush University Medical Center | Med School: China Medical University | Med School: Sri Devaraj Urs Medical College | Med School: University Of Louisville School Of Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. David Ralph Onsager
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. David Ralph Onsager has the following 3 specialties
Specialty Expertise
Dr. David Ralph Onsager has the following 8 areas of expertise
Certifications, License, & Education
38 Years Experience
MEDICAL LICENSE
Medical Doctor, Illinois, 2026, Active
EDUCATION & TRAINING
Medical School
Rush Medical College Of Rush University Medical CenterGraduated in 1988
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Frequently Asked Questions
- Is Dr. David Onsager accepting new patients?
- Dr. David Onsager has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. David Onsager accept my insurance?
- You can see the insurance plans that Dr. David Onsager accepts on their Vitals profile.
- Which hospitals is Dr. David Onsager affiliated with?
- Dr. David Onsager is affiliated with The University Of Chicago Medicine, The Methodist Hospitals Northlake Campus, Methodist Hospitals Southlake Campus, and Uchicago Medicine Comer Childrens Hospital Hyde Park.
- Where is Dr. David Onsager's office located?
- Dr. David Onsager's office is located at 5758 S Maryland Ave, Chicago, IL, 60637.
- Does Dr. David Onsager accept virtual/telehealth appointments?
- Dr. David Onsager has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
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