Paul E. Berger

The American College of Radiology is a national organization serving radiologists, radiation oncologists, interventional radiologists, and medical physicists with programs focusing on the practice of radiology and the delivery of comprehensive health care services. ACR devotes its programs to make imaging safe, effective, and accessible. The college publishes the journal of the American College of Radiology and the ACR bulletin. It also provides the national accreditation program for mammography. ACR also hosts the ACR career center for radiologists. The College was founded in 1923 and its office is located in Reston, VA.

NightHawk Radiology Holdings, Inc. provides radiology solutions to radiology groups and hospitals throughout the United States. The company's team of independent contractor and hospital-privileged physicians provides professional services 24 hours per day, seven days a week, for approximately 26 percent of all United States hospitals. In addition to these professional services, the company also provides its customers with cardiac 3D reconstructions, radiology clinical workflow technology and business services. It sells its services primarily through the direct sales force comprised of telesales and field sales personnel

Nighthawk Radiology Services LLC provides teleradiology services for hospitals, clinics, and imaging centers. The company is headquartered in Eden Prairie, MN.

MD3 Corp. designs and develops sophisticated products.

MEMRAD Medical Group, Inc. provided general and specialized medicine and surgery. The company was headquartered in Tustin, CA.