About
Dr. Georgios Karanastasis grew up on Kos, the Greek island where Hippocrates was born. He earned his MD from the University of Athens and completed his internal medicine residency at John H. Stroger Hospital of Cook County in 2008. During his residency, he received the Role Model to Peers and Humanitarian Award for two consecutive years, in 2007 and 2008.
Before founding IASIS Boutique Health, Dr. Karanastasis served as a Clinical Preceptor at Des Moines University. He holds board certification from the American Board of Internal Medicine and meets all continuing medical education requirements to keep that certification current. His research background centers on cardiovascular medicine, with a specific focus on congestive heart failure. He participated in and conducted several clinical trials, including the I-PRESERVE study on heart failure, two cardiovascular studies in 2004, and the SELECT prostate cancer prevention trial in 2005. He is affiliated with Northwestern Palos Hospital. Dr. Karanastasis is passionate about preventive care and longevity, and patients travel from states including Florida, Arizona, and California to remain under his care.
Education & Training
Medical School
MD, University of Athens, Greece
Residency
Internal Medicine, John H. Stroger Hospital of Cook County (completed 2008)
Additional Training
Clinical Preceptor, Des Moines University
Certifications
Conditions Treated
Who is Dr. Karanastasis right for?
Dr. Karanastasis is a strong fit for adults who want a primary care physician deeply invested in prevention and long-term health. Patients managing cardiovascular conditions, chronic disease, or complex health histories benefit from his research background and clinical depth. He works well with patients who value direct physician access and unhurried appointments. Adults focused on longevity and proactive health planning will find his approach well-matched to their goals.
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Frequently Asked Questions
Dr. Karanastasis specializes in internal medicine and preventive medicine. He has particular depth in cardiovascular health, chronic disease management, and longevity. His research background includes clinical trials focused on congestive heart failure and cardiovascular outcomes.
Yes. Dr. Karanastasis holds board certification from the American Board of Internal Medicine. He meets all continuing medical education requirements to keep that certification current.
Dr. Karanastasis earned his MD from the University of Athens in Greece. He completed his internal medicine residency at John H. Stroger Hospital of Cook County in 2008. During his residency, he received the Role Model to Peers and Humanitarian Award for two consecutive years.
Yes. Dr. Karanastasis has a research background centered on cardiovascular medicine. He participated in and conducted several clinical trials, including the I-PRESERVE study on heart failure and the SELECT prostate cancer prevention trial in 2005.
Dr. Karanastasis sees adult patients across a wide range of health needs. He works with patients managing chronic conditions, cardiovascular risk, and complex medical histories. Some of his patients travel from states including Florida, Arizona, and California to remain under his care.
Yes. Dr. Karanastasis is affiliated with Northwestern Palos Hospital.
Dr. Karanastasis grew up on Kos, the Greek island where Hippocrates was born. That background shaped a deep commitment to prevention as the foundation of good medicine. His clinical work and research both reflect a focus on catching and addressing disease early.
Yes. Before founding IASIS Boutique Health, Dr. Karanastasis served as a Clinical Preceptor at Des Moines University, where he trained medical students and residents.
Doctor profile last updated March 21, 2026