View the BIG 100 largest medical device companies in the world listings hereiRhythm2022 Rank: 922021 Rank: 91HeadquartersSan FranciscoUnited Stateswww.irhythmtech.com 2022 Revenues ($USD) : $322,825,0002022 R&D spend : $38,671,0002022 Number of Employees : 1,700Fiscal Year End : 12/31/2021Company CEO : Quentin Blackford, president and CEOSeeking to usurp the old-school Holter monitor for electrocardiograph monitoring and AFib detection, iRhythm has developed the Zio XT platform. The wearable includes cloud-based data analytics and machine-learning capabilities for cardiac monitoring. Founded in 2008, the San Francisco–based company’s Zio service aims to offer quality clinical accuracy, positive patient experience and compliance. It also holds the promise of lower cost of care through the miniature, wearable patch that includes a breathable, waterproof outer layer and a strong adhesive with a flexible design for secure attachment on the left side of the chest. In 2022, the company continued to build its leadership team, hiring Dr. Mintu Turakhia as chief medical officer and chief scientific officer, Brice Bobzien as chief financial officer and Reyna Fernandez as chief human resources officer. Chief Commercial Officer Dave Vort resigned in July, replaced by Chad Patterson. – SW and JH Previous: Nevro ( #91 ) Next: Barco (healthcare division) ( #93 )