UChicago Faculty Physicians who provide services at UChicago Medicine Ingalls Memorial are not employees or agents of UChicago Medicine Ingalls Memorial.
Through his research, Dr. Onsager has investigated ways to improve surgical techniques and processes, and has been published in multiple peer-reviewed journals, such as Thoracic Cardiovascular Surgery.
Areas of Expertise
- Coronary Artery Bypass Surgery
- Mechanical Circulatory Support
Board Certifications
- Thoracic Surgery
- Surgery
Memberships & Medical Societies
- Society of Thoracic Surgeons
- International College of Surgeons
- American College of Surgeons
- International Society for Heart and Lung Transplantation
Practicing Since
- 1997
Languages Spoken
- English
Medical Education
- Rush University
Residency
- University of Wisconsin Hospitals & Clinics
Fellowship
- University of Chicago Medicine; University of Wisconsin Hospitals & Clinics
News & Research
View Published Papers- Aetna HMO (specialists only)
- Aetna POS
- Aetna PPO
- BCBS Blue Precision HMO (specialists only)
- BCBS HMO (HMOI) (specialists only)
- BCBS PPO
- Cigna HMO
- Cigna POS
- Cigna PPO
- CountyCare *see insurance page
- Aetna Better Health *see insurance page
- Medicare
- Multiplan PPO
- PHCS PPO
- United Choice Plus POS/PPO
- United Options (PPO)
- United Select (HMO & EPO) (specialists only)
- United W500 Emergent Wrap
- Aetna Medicare Advantage HMO & PPO
- BCBS Medicare Advantage HMO & PPO
- Humana Medicare Advantage Choice PPO
- Humana Medicare Advantage Gold Choice PFFS
- Humana Medicare Advantage Gold Plus HMO
- United Choice HMO (specialists only)
- University of Chicago Health Plan (UCHP)
Our list of accepted insurance providers is subject to change at any time. You should contact your insurance company to confirm UChicago Medicine participates in their network before scheduling your appointment. If your insurance company is not listed here, or if you have any other questions, please contact Managed.Care@uchospitals.edu.
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