Gee, lets think out loud for a second...
You think a company that makes surgical instruments and devices will take you on as a consultant? As in, pay you for your knowledge and expertise.. when your only exposure to surgery was as a med student rotating for a month or two...
How about consulting for Health IT? Again, if you have a BA in Psych and then just finished your MD... I doubt you would be able to provide much value to anyone in HIT.
The answer, however, is no. No, you don't have to do residency. Yet, you do need to be able to provide value (thats what people pay for).