AMN Healthcare Services Inc. (NYSE: AMN), one of the largest US healthcare staffing firms, completed its acquisition of Medical Search International and Dr. Wanted Healthcare Staffing, together known as MSDR. The acquired operations specialize in locum tenens and advance practice.

Founded in 2002, MSI provides healthcare professionals in psychiatry, anesthesia, radiology and surgery, while DRW, founded in 2011, provides psychiatry, anesthesia and surgery professionals.

The transaction was first announced on Oct. 23 and is valued at $300 million, to be funded with cash and borrowings.

The company expects the MSDR acquisition to have an immaterial contribution to its consolidated financial results for the fourth quarter.