Testing Locations » California » Santa Clara CA » William H. Trolan Md Inc. – William H. Trolan Md Inc. – Drug Testing Only (Preferred) William H. Trolan Md Inc. – William H. Trolan Md Inc. – Drug Testing Only (Preferred) William H. Trolan Md Inc. – William H. Trolan Md Inc. – Drug Testing Only (Preferred)1825 Civic Center Dr # 7Santa Clara, CA 95050-7301 United States