Masimo

Medical Equipment ManufacturingCalifornia, United States1001-5000 Employees

Masimo is a global medical technology company based in Irvine, California, that designs and manufactures a broad range of monitoring technologies. Its portfolio includes measurements, sensors, patient monitors, and automation and connectivity solutions for clinical use. The company emphasizes noninvasive monitoring with the aim of improving patient outcomes while reducing the cost of care.

Its Masimo SET pulse oximetry technology has been studied in more than 100 independent studies and is reported to be used on more than 200 million patients globally each year, serving as the primary pulse oximetry at all ten of the top U.S. hospitals as ranked in the 2025 Newsweek World’s Best Hospitals listing. Masimo operates within the medical equipment manufacturing industry, providing advanced monitoring technologies used in hospitals and other care settings. In May 2026 Masimo shareholders approved a merger with Danaher, marking a notable corporate development.

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