ProxyMed, a provider of healthcare transaction processing and other services, has a new chief executive officer.

John Lettko, a veteran executive who was the former CEO and chairman of Viewpointe, was named to the ProxyMed post on Wednesday.

“John is a recognized leader in technology services with a track record of executing aggressive growth strategies and we are delighted to welcome him to ProxyMed,” said Kevin McNamara, chairman of the Board for ProxyMed, in a statement. “John’s appointment comes at a critical juncture in the evolution of ProxyMed and we are confident that under his leadership, the company will continue its rapid growth and expansion in the healthcare technology market.”

Viewpointe is a check image archive and retrieval services provider owned by Bank of America, IBM, J.P. Morgan Chase & Co., SunTrust Banks Inc., U.S. Bancorp, and Wells Fargo.

Lettko also has served as president of Xpede, an application service provider for the home lending market. The venture-backed firm was sold to Alltel.

Lettko replaces McNamara, who had been acting as interim CEO. Michael Hoover retired as ProxyMed’s CEO in January.