Nationwide HealthCare Billing Services, based in Dallas, Texas, provides nationwide medical billing services for all types of medical specialties along with other health care facilities. We pride ourselves on paying close attention to detail. Our owner is a physician, so he knows the thought processes and the problems related to running a medical practice or doctor’s office. In business for 13 years, the owner was previously the medical director of a health care company, overseeing their bill review and auditing department.