Pull Data from Accounts to Cases

Pull Data from Accounts to Cases

When creating a case we will have a user select an account from an account lookup field. After they select the account there are four fields in the account module, Owning CSR, Practice Advisor, FPC Doctor Number & Software Version, that I would like to auto-populate into Owning CSR, Practice Advisor, Doctor Number and Software Version fields in the cases module. Since this info will already be entered into the account module it would be a nice time saver to just have it auto pull into the case that's being created. If anybody could offer any help with a custom function it would be greatly appreciated.

Thank you!