
WENTZVILLE, Mo. - With shovels in hand and a vision for the future, community leaders and Mercy officials broke ground on the state’s first brand-new, acute care hospital campus in nearly a decade.
The ceremonial event marks a major milestone for Missouri’s health care landscape, as the Mercy Hospital Wentzville campus and its broad offering of services is set to bring the latest medical offerings to one of the state’s fastest-growing communities.

“This isn’t just the start of construction – it’s the beginning of a transformative journey for health care in Wentzville and the tri-county region,” said David Argueta, Mercy senior vice president of community operations. “After months of listening to and learning from neighboring businesses, residents and our community advisory council, we’re excited to move toward meeting the health care needs of the area.”
Crews began preparing the land, grading the site and working on a centralized utility plant late last month. As the dust settles from the ceremonial dig, excitement builds for what’s to come – an advanced medical campus designed to serve the present while anticipating the health care needs of the future. Construction is expected to be completed in four years.
In the late 1950s, the Sisters of Mercy purchased an apple orchard on a two-lane road in St. Louis County when others thought it was too far for patients to travel. Their vision is now the bustling Mercy Hospital St. Louis campus nestled near two major interstates and central to the area’s residents. With a similar vision inspired by the Sisters, nearly 20 years ago, Mercy saw potential in a sprawling 60-acre site at the intersection of interstates 64 and 70 in Wentzville.
“The Sisters have always seen beyond what is – to what could be,” said Steve Mackin, Mercy president and CEO. “Mercy Wentzville is the next chapter in that legacy – bringing health and hope to one of the fastest-growing communities in our region as envisioned nearly two decades ago.”

Plans for Mercy Hospital Wentzville include 75 inpatient acute care beds and a 26-bed emergency department with two trauma areas and four behavioral health rooms. The campus will offer a broad range of inpatient and outpatient care to the region, including surgical and specialty options such as cardiovascular, cancer and orthopedics as well as outpatient imaging, diagnostic and treatment services.
Mercy is working with CannonDesign for architecture and design and with McCarthy Building Companies to manage the construction process, which includes working closely with union labor throughout the region.
