You can set different phone numbers to a contact and better than that, you can choose one from multiple numbers as a default phone number on Galaxy S4, S3, Ac2, and almost all the other Android devices.
In this tip, our focus phone is GS4 and the instruction is as follows:
1. Open "Contact" App
2. Choose the Person or Contact and tap on it
3. Long Press on the Phone number, you would like to set as default
4. On the opened menu, simply tap on "Set Default"
Update: On some Galaxy devices, after step 2, press Menu Button, tap Mark as default option, and then choose the number as the default
If you don't know how to add multiple numbers to a Galaxy S device, See: How to Add Multiple Phone Numbers to Galaxy S4
Read More Galaxy S4 Tips and Tricks