Construction may begin this month on a new 35,000-square-foot heart hospital slated to open in first quarter of 2019 on the Baylor Scott and White Medical Center McKinney campus.

The new Heart Hospital Baylor McKinney will serve patients in need of cardiovascular care in Collin and Grayson counties, as well as in parts of Oklahoma, according to Baylor Scott and White Health executives. The facility will sit on the northwest corner of the existing campus.

Baylor initially approached McKinney about the possibility of a building expansion in September, said Brian Lockley, the city’s director of planning.

A site plan for the facility was approved by the city’s planning department in November. Approval for construction is still pending, but the site has met certain planning and engineering requirements, Lockley said.

The facility will include an outpatient nursing unit and four procedure rooms. It will have 22 ambulatory surgery beds and offer more complex heart procedures, such as electrophysiological services and catheterization, said Baylor’s chief strategy officer, LaVone Arthur, in a phone call.

It’s the latest expansion to the nearly 57-acre Baylor McKinney campus that opened in 2012 with a $195 million, 95-bed hospital on the northwest corner of U.S. 380 and Lake Forest Drive.

Since then, the campus has undergone other expansions. Those include doubling the size of the emergency room; adding 48 new beds (to a total of 143) and a second physician office building; providing extra parking; and creating a physical rehabilitation gym and an orthopedic unit.

The heart hospital will cost an estimated $30 million to construct, according to Baylor Scott and White Health, and add 60 staff members to the medical campus that already employs over 600.