1, 2 and 3 or Comprehensive Osteopathic Medical Licensing Examination Level 1, 2, and 3. In addition, the completion of a residency is required to practice independently. Residency is accredited by the ACGME and is the same regardless of degree type. After residency, physicians can become board certified by their specialty board. Physicians must have a medical license to practice in any state. See also Health policy Health workforce Healthcare in the United States Medical deserts in the United States Medical education in the United States Physician shortage in the United States Primary care service area References