Diagnostic Clinic of Longview operates a Medicare Center open to Medicare recipients with Medicare Part B or a Medicare replacement policy as primary insurance. Established patients may receive outpatient medical care from a physician, nurse practitioner, or physician assistant, with treatment plans supervised by an internal medicine physician. The clinic is affiliated with Longview Regional Medical Center and CHRISTUS Good Shepherd for emergency care or inpatient needs, with follow-up visits scheduled after discharge so clinic providers can resume outpatient care.