A 1099-MISC form is not complete without an EIN number. On the 1099-MISC, the EIN may be titled "Payer's TIN". This number usually appears under the payer's address.
If your 1099-MISC is missing the EIN, you will need to enter the income as if you did not receive a 1099-MISC. There is a screen titled "Enter Business Income That's Not on a 1099-MISC" where you will enter this amount within the Business income and expenses (Sch C) income section.