<p>A Louisville-based health care management company is merging a subsidiary with an Atlanta-based health care software company in what the companies say is a $56 million deal.</p><p>Louisville-based SHPS Holdings Inc. announced Monday that its subsidiary, SHPS Inc., will merge with Landacorp Inc., a company that provides software to corporations to manage health care accounts.</p><p>The deal is expected to close in the second quarter, subject to stockholder and regulatory approval.</p><p>Dave Nelson, chief executive officer of SHPS, said the merger will benefit both companies by expanding services.</p><p>SHPS Holdings provides software to companies that manage health benefits and health plans. Landacorp provides software for health plans and health care delivery organizations.</p>