Dr. David Onsager MD

Cardiac Surgeons in McHenry, IL

5  Excellent based on 1 review | Rate Dr. Onsager
Dr. Onsager has been compared 38 times

Dr. David Onsager specializes in cardiac surgery, vascular surgery, thoracic surgery, general surgery in McHenry, Illinois.

Dr. David Onsager has been compared 38 times. Details of Dr. Onsager's 27 years experience as an MD, his hospital affiliation and education at Rush University are available on your free doctor report.


Primary Location for Dr. Onsager

Dr. David Onsager
Cardiac Surgery Associates
4309 Medical Center Dr
Suite A200
McHenry, IL 60050

Patient Ratings and Reviews


Dr. David Onsager has an average rating of 5 stars (out of 5) with a rating of Excellent based on 1 reviews.

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 Board Certification, Specialty and Expertise

Dr. David Onsager has been identified as specializing in Cardiac Surgery, Vascular Surgery, Thoracic Surgery and General Surgery.


  • Thoracic Surgery
He is certified by The American Board of Surgery{} for and The American Board of Thoracic Surgery{} for Thoracic Surgery.

More information available on your free report

 Hospital Affiliation

A hospital affiliation covers any doctor who has an affiliation, association or admitting privilege with a hospital. A doctor's particular affiliation to a specific hospital can translate to the overall quality of that provider.

Dr. Onsager is affiliated with 1 hospital:

MacNeal Hospital
3249 S Oak Park Ave
Berwyn, Illinois


Dr. Onsager attended medical school at Rush University Rush Medical College and graduated in 1988 having 27 years experience.

While there is no proven correlation between the quality of one's educational institution and the quality of one's professional competence, it is often an indicator. Medical schools have various levels of selectivity (some are harder to get into than others), and both the quality of their clinical training and level of research are measured. Additional medical training in both residency and fellowships and the facilities they are conducted at also provide a history of the doctors' level of training and experience.


Patients may also know Dr. David Onsager MD as:

  • General Surgery, Thoracic Surgery, Vascular Surgery, Cardiac Surgery
    Show More

    Presence Mercy Medical Center, 1325 N Highland Ave, Aurora, IL 60506

    • General Info



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