Commercial or residential? Retired dermatologist.

[Timothy Solomon]

Hello, I am a dermatologist and I own multiple dermatology offices. I want to get into real estate investing (buying and holding) and was thinking about starting with the typical duplex multi family and growing from there. I’m not opening any more dermatology offices but I know a lot more about commercial properties rather than residential since I am a tenant in 6 locations. 

How do I decide if I want to buy commercial real estate or do the typical multi family? What are the drawbacks of going commercial rather than residential?