Westchester Medical Group is a physician-owned and managed multispecialty group that provides a range of medical and health care services for the residents of Westchester County, N.Y. Its various programs are accredited by the American College of Radiology. The group works with a team of more than 120 physicians. The Westchester Medical Group provides radiology services that include magnetic resonance imaging, ultrasonography, nuclear medicine, bone densitometry and mammography. The group also offers breast needle and biopsy services. The Westchester Medical Group s physicians are affiliated with White Plains Hospital Center. With a location in Rye Brook, N.Y., it maintains additional offices in White Plains, Purchase, Larchmont and Yonkers, N.Y.