OpGen, Inc. announced the closing of a $6 million financing by the Merck Global Health Innovation Fund. In connection with this financing, David M. Rubin Managing Director of Merck GHI, has been appointed to the company's board of directors, effective immediately. Rubin is managing director at Merck Global Health Innovation LLC., where he is responsible for identifying investment opportunities in emerging healthcare solutions and services, with a particular emphasis on solutions for precision medicine.

Previously he was at The Wilkerson Group/IBM Global Services.