Billionaire Profile
Joe Kiani
Global Rank
#2994

Image: The White House | Public domain | via Wikimedia Commons

Joe Kiani

CEO, Medical devices
UNITED STATES
Real-Time Net Worth
$1.255B
Estimated based on Medical devices stock value as of April 20, 2026
-0.02% (24h)
Age
61
Source
Medical devices
Industry
healthcare
Citizenship
UNITED STATES

Biography

Joe Kiani, an Iranian-born American, is a prominent figure in the medical technology industry, best known as the founder of Masimo, a company specializing in medical devices. His estimated net worth is $1.2 billion, sourced from his successful ventures in the healthcare sector. Kiani's career has been marked by significant achievements, including the co-invention of Masimo SET Pulse Oximetry, a technology that has saved countless lives and revolutionized patient monitoring. He holds several patents and has been recognized with numerous awards for his contributions to patient safety and innovation. Kiani's commitment extends beyond business, as he actively participates in philanthropy and civic engagement, demonstrating his dedication to improving healthcare and the well-being of others.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life

Joe Kiani was born in Shiraz, Iran, on September 16, 1964. At the age of nine, he immigrated to the United States with his family. His father was an engineer, and his mother was a nurse. Kiani graduated from high school at 15 and later pursued higher education, earning bachelor's and master's degrees in electrical engineering from San Diego State University (SDSU) by age 22.

Rise to Success

Kiani's career began with engineering roles at Burroughs and Bell Industries. In 1989, he founded Masimo, a medical technology company that would become a global leader in non-invasive patient monitoring. Kiani's vision was to improve patient care by developing more accurate and reliable monitoring technologies. Masimo's Signal Extraction Technology (SET) pulse oximetry, co-invented by Kiani, addressed critical limitations of traditional pulse oximetry, leading to a significant reduction in false alarms and improved patient outcomes. The company went public in 2007 and is listed on the NASDAQ under the ticker MASI. Kiani was ousted from Masimo's board and resigned as CEO in September 2024 after a dispute with activist investors.

Key Business Strategies

Masimo's success can be attributed to Kiani's focus on innovation and the development of proprietary technologies. The company's initial business model focused on developing and licensing its Signal Extraction Technology (SET) to major medical device manufacturers, which enabled rapid market reach. Masimo's products have been widely adopted in hospitals and healthcare settings globally.

Philanthropy

Kiani is committed to patient safety and has established the Patient Safety Movement Foundation. He has served on the Board of Trustees of the California Institute of Technology (Caltech), the Board of Councilors of the Carter Center, and the Chair of the Board Quality Committee of the Children's Hospital of Orange County (CHOC). Kiani has also been involved in various civic engagement platforms, including A Starting Point, a video-based platform.

Career Milestones

1989

Founded Masimo

Joe Kiani founded Masimo, a medical technology company that revolutionized patient monitoring.

1995

FDA Clearance for Masimo SET

Masimo's Signal Extraction Technology (SET) pulse oximetry received FDA clearance.

2007

Masimo Goes Public

Masimo became a publicly traded company on NASDAQ (MASI).

2021

Appointed to PCAST

Appointed by President Joe Biden to serve on the President's Council of Advisors on Science and Technology (PCAST).

2024

Resigned as CEO of Masimo

Kiani resigned as CEO after losing a board seat.

Philanthropy & Social Impact

Patient Safety

Patient Safety Movement Foundation

Undisclosed

Founded the Patient Safety Movement Foundation to eliminate preventable medical errors.

Business Philosophy & Leadership

Notable Quotes

"I wanted to be a doctor, but my grades weren't that good and chemistry was not my thing. Physics fortunately was. So I switched to engineering."

Leadership Principles

Remain faithful to your promises and responsibilities.

Emphasizes the importance of integrity and commitment.

Thrive on fascination and accomplishment, and not on greed and power.

Focuses on intrinsic motivation and a mission-driven approach.

Strive to make each year better than the year before both personally and for the team.

Highlights the value of continuous improvement.

Make each day as fun as possible.

Promotes a positive and enjoyable work environment.

Do what is best for patient care.

Prioritizes the well-being of patients.

Controversies & Challenges

2024

Shareholder Dispute and Departure

Kiani resigned as CEO in September 2024 after losing a proxy fight. A subsequent dispute arose regarding his share ownership, with Kiani claiming 13.2% ownership but the company stating a lower percentage.