Although some primary care doctors look down on chiropractors, it's possible that yours will be willing to recommend a decent chiropractic office. Now that more and more insurers are covering chiropractic, in fact, such a referral may be necessary before your insurance will pay for treatment.
If you're on a form of government medical care like Medicare or Medicaid, don't worry -- your insurance will cover visits to your chosen chiropractic office. Currently, the U.S. military health service doesn't cover chiropractic care, but it's under consideration.