WMCHealth Physicians Acute Care, General and Trauma Surgery offers critical care surgery, general surgery, trauma surgery and minimally invasive and robotic surgery in Valhalla, NY. WMCHealth Physicians is a member of the Westchester Medical Center Health Network (WMCHealth), a 1,700-bed healthcare system headquartered in Valhalla, New York, with 10 hospitals on eight campuses spanning 6,200 square miles of the Hudson Valley.