College:
The University of Cincinnati,  Summa Cum Laude.  

Medical school:
The Ohio State University College of Medicine.

Residencies:
Surgery:
 William Beaumont Hospital, 
         Royal Oak, Michigan 
Internal Medicine:
 Indiana University Medical Center
         Indianapolis, Indiana

Board Certified:
The American Board of Surgery. 1998, 2008
The American Board of Internal Medicine, 1991 

Current professional activities:
Practice limited to surgery.


Main focus:
Advanced laparoscopic procedures including
-Laparoscopic gastric bypass

-Laparoscopic sleeve gastrectomy

-Laparoscopic anti reflux
-Laparoscopic hernia procedures
-Laparoscopic cholecystectomy (gallbladder).    
-Laparoscopic stomach and intestine procedures

Organizations:
Detroit Surgical Association
Academy of Surgery of Detroit
Oakland County Medical Society
Michigan State Medical Society
Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)
American Society for Metabolic and Bariatric Surgery

Michigan Bariatric Society

Michigan Bariatric Society Collaborative

Publications:  Dr. Chengelis wrote papers which were published in major journals in both general surgery and vascular surgery during his residency.  More recent articles involving work in bariatric surgery document his participation in research in the field of weight loss surgery.  He has presented research work before major scientific meetings. 

Medical Education:  Dr Chengelis has participated in the teaching of medical students from Wayne State University and now the recently formed Oakland University William Beaumont School of Medicine.   He is an active educator in the training of surgical residents at Royal Oak and serves on various committees for Education and Quality Assessment.  

Board Certified:
After successful completion of medical school, a surgeon must complete a minimum of five years of residency at an approved program, pass a written test and then pass an oral examination to obtain board certification.   The process is long and rigorous.   Every ten years, a surgeon is retested to stay board certified.  Surgeons are required to spend at least 50 hours a year in Continued Medical Education.  This process helps to insure that the American public is served by surgeons who are knowledgable, current, skilled and safe.