Midwife & Doctor?

Kristi
Do most of you that have midwives also have a doctor for prenatal care/ general care?  The birth center I'm going to only has midwives, and I plan to only use midwives during the birth, but I'm wondering if I should also be seeing a doctor regularly in addition to my midwife visits?  I don't have a general practitioner, but maybe a Naturopathic or Integrative medicine doctor?