As stated above, they are both 4 years.
Are they the same?
Ill do your research for you:
U Iowa (Allopathic) MSI:_________CCOM (Osteopathic) MSI:
Gross Anatomy Lab------------------Gross Anatomy Lab
Foundations of Clinical Practice------Introduction to Clinical Medicine
Biochemistry -----------------------Biochemistry (Cell bio+genetics+biochem)
Cell Biology-------------------------" "
Medical Genetics--------------------" "
Immunology------------------------Immunology
Neuroscience-----------------------Neuroscience
PE Skills_________________________Psychiatry
Case Based Learning_______________Physiology
Shadowing Experience______________Embryology
Human Organ Systems_____________History of Medicine
________________________________Osteopathic Manipulative Medicine
________________________________Bioethics and Diversity
As you can see -- DO and MD curriculum from these 2 schools are very similar as far as the core classes go (they vary a lot between schools). The main difference (in this case) is the strong DO focus on OMM and mental health.