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Our office is a very relaxed and stress-free environment. We strive to tailor treatment according to each patient's individual needs. I use the latest techniques and proven procedures including minimally invasive techniques and robotic surgery. My philosophy includes using a nonsurgical approach, whenever it would provide the best treatment option. The overall goal is to return every patient back to better health.
CrossFit Level 1 trainer, Healthy lifestyle, Exercise, Sailing, Tennis, Golf, Gardening, Hiking
English
Greek
Fellow, American College of Surgeons
American Society of Breast Surgeons
American Medical Association
Illinois State Medical Society
Metropolitan Chicago Chapter of American College of Surgeons, Member committee
Society for Laparoendoscopic Surgeons
Hellenic Medical Society of Chicago
Western Surgical Association
Elmhurst Hospital Trauma Committee
Breast surgery, Minimally invasive treatment including Gallbladder, Hernia and Colon surgeries, Special expertise in Hiatal hernia repairs and Surgery to stop gastroesophageal reflux (GERD), including endoscopic approaches
Castle Connolly 2025 Top Doctor
2025
Chairman, Department of Surgery at Adventist Glen Oaks Hospital
2003
Director of Trauma, Adventist Glen Oaks Hospital
2001
Resident of the Year
2000
Surgeon Champion for the National Surgical Quality Improvement Program for Elmhurst Hospital
2000
Comments are collected in our Press Ganey Patient Satisfaction Surveys. Patients are de-identified to protect confidentiality and patient privacy. Learn more about our patient satisfaction survey.
Great care provided by all involved in my surgery from start to finish. Surgeon did a great job!
Good
Dr. Siavelis listened to my concerns and thoroughly discussed how they would be addressed both currently and going forward. He didn't rush me through the appointment ensuring all my questions were answered.
The nurse and the doctor were wonderful, thoughtful
I feel so fortunate to have Dr. Harry Siavelis as a member of my Duly care team. He put me at ease immediately and he was very patient with me as I explained the reason for my visit. Then he took enough time as he felt necessary to make sure everything that he told me concerning my options to improve my condition (after a physcial exam) and to help me attain my goals to improve my overall health were understood. He is very professional, and showed honest care and concern for me. Dr. Harry is the Best of the Best!
The Patient Satisfaction Rating score is an average of all responses to care provider related questions on our independent rating system, the Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our patient satisfaction survey.
Patients Seen: All Ages
Practices In: Bloomingdale, Elmhurst, Hinsdale, Lombard