Akumin Inc.

■ FOUNDED: 2015

■ CO-CEOs: Riadh Zine; Rhonda LongmoreGrund

■ HEADQUARTERS: Plantation, Fla.

■ BUSINESS: radiology and imaging services

■ EMPLOYEES: 4,000

■ ANNUAL COMBINED REVENUE: $730M

■ NOTABLE: acquired Irvine’s Alliance HealthCare Services Inc.