A total of 43 staffing firms generated at least $50 million in US healthcare staffing revenue in 2017, according to the report “Largest Healthcare Staffing Firms in the US: 2018 Update” by Staffing Industry Analysts. Combined, they generated $11.3 billion in such revenue and comprised 70% of the market.

AMN Healthcare Services Inc. (NYSE: AHS) retained its place as the largest healthcare staffing firm in the US. CHG Healthcare ranked second, followed by Cross Country Healthcare Inc. (NASD: CCRN) — both retaining the same spots as last year.

Aya Healthcare moved into the top five on the 2018 list.

The five largest healthcare staffing firms in the US and their estimated 2017 staffing revenue are:

1. AMN Healthcare: $1.68 billion, 10% market share
2. CHG Healthcare Services: $1.55 billion, 10% market share
3. Cross Country Healthcare: $903 million, 6% market share
4. Jackson Healthcare: $850 million, 5% market share
5. Aya Healthcare: $444 million, 3% market share

Seven companies qualified for this year’s ranking that did not appear in last year’s list: All Medical Personnel, All Star Recruiting, American Health Staffing Group, Atlas MedStaff, Gifted Healthcare, The Execu|Search Group and Triage Staffing.

The report also provides four rankings of the largest firms in each healthcare subsegment: travel nurse, per diem nurse, locum tenens and allied healthcare.

By sub-segment, AMN Healthcare also ranked as the largest travel nurse firm and the largest allied healthcare staffing firm.

CHG Healthcare Services ranked as the largest locum tenens firm in the US, holding 34% market share in locum tenens by SIA estimates.

Cross Country Healthcare ranked as the largest per diem nursing firm with 7% market share.

AMN’s revenue does not include revenue from its acquisition of MedPartners in the second quarter of this year. However, Cross Country’s revenue does include revenue from Advantage RN, which it acquired in July 2017, and Aya’s includes revenue from its acquisition of RN & Allied Specialties in the third quarter of 2017.

Staffing Industry Analysts ranked companies by revenue, according to industry custom, but this ranking should not be taken to imply that a firm with a higher rank provides better service or more value to its shareholders.

SIA corporate members can download the full report online.