On Jan. 30, MEDNAX announced the acquisition of Radiology Alliance, the largest private practice radiology group in Tennessee. With this acquisition, MEDNAX officially entered the world of onsite radiology. Shannon Werb, president and COO of vRad, a MEDNAX company, spoke with imagingBiz about this announcement and what it means for MEDNAX, vRad and other private practice radiology groups throughout the country.