ling5000About LING CUI. This page provides the complete NPI Profile along with additional information for Ling Cui, an internist established in Merrick, New York with a medicalLING5000 Special Project (6 UOC) LING5001 Second Language Acquisition (6 UOC) LING5002 Language Teaching Methodology (6 UOC) LING5003 Testing and Evaluation (6 UOC)