About Semler
Semler Scientific, Inc. develops, manufactures and markets innovative products and services that support the early detection and treatment of chronic diseases.
Our flagship product, QuantaFlo®, is a patented, FDA-cleared point-of-care product that measures arterial blood flow in the extremities and provides results in a matter of minutes. QuantaFlo supports health care providers in the early diagnosis of vascular diseases, even in patients who are asymptomatic.
Our History of Accomplishments
2007
Dr. Herbert J. Semler cofounded Semler Scientific.
2010
Received FDA 510K clearance for first PAD system FloChec.
2015
Received FDA Clearance and ANSI Accreditation for QuantaFlo.
2016
Recognized in Deloitte's Technology Fast 500.
2018
Received HITRUST 9.1 Certification.
Reached milestone of 1,000,000 QuantaFlo Test Performed.
2020
Received HITRUST 9.2 Certification.
Introduced SemlerShield, SemlerVault, and SemlerAnalytics.
Recognized in Deloitte's Technology Fast 500 for Third Consecutive Year.
2021
Launched first ANAB Accredited Certificate Program for SemlerSimulation online Training.
2022
Received HITRUST 9.6 Certification.
Recognized in Forbes Top 100 Small-Cap List.
2023
Introduced Cloud-based computing for QuantaFlo Software.
2024
Introduced SemlerHub.
Semler Leadership
Dr. Douglas Murphy-Chutorian has served as a member of our board of directors since September 2012 and as our Chief Executive Officer since October 2012 (with a brief hiatus in April, 2023). He has had a broad, diverse career in healthcare over the past 30 years in numerous positions including clinician, academician, inventor, entrepreneur, CEO, chairman of the board, and consultant to financial firms. From 2005 to 2012, he was the managing director of Select Healthcare Capital, LLC. Dr. Murphy-Chutorian is a named inventor on more than 30 patents and has guided more than 50 products through various regulatory approval processes. His business career has included extensive involvement in all facets of the medical industry from financial, research and development, manufacturing, marketing and sales, regulatory, reimbursement, and clinical trials. His breadth of healthcare experience includes all major sectors of the industry: medical devices, health services, pharmaceuticals, biotechnology, and managed care. Dr. Murphy-Chutorian received his B.A. and M.D. from Columbia University. He completed his internal medicine residency at New York University/Bellevue Medical Center and his fellowship in cardiology at Stanford University Medical Center. He has served as a faculty member in interventional cardiology at both Stanford and Montefiore Medical Centers.
Renae Cormier joined Semler in May 2022. As our Chief Financial Officer, she leads our Bitcoin, accounting, finance, investor relations, and business strategy efforts, and she plays a pivotal role in shaping the overall direction of the company. Renae has extensive experience with investing, finance, and accounting. From 2001 until joining our company, she held various positions at investment management firms. She was partner at Aravt Global from 2013 to 2022, where she was responsible for allocating investment capital in public and private companies across a variety of industries, as well as leading accounting focused risk management across the portfolio’s holdings. From 2001 to 2010 she was an equity analyst and director of financial research at Ziff Brothers Investments. From 1997 to 2001 she was an auditor and provided mergers and acquisitions transaction advisory services at PricewaterhouseCoopers. Renae holds a dual bachelor’s degree in accounting and finance from the University of Colorado.
Shane Reid is our Chief Technology Officer. He brings a wide-ranging experience as an engineer and manager from the small startups to large, multi-divisional organizations. Shane has demonstrated success in both primary technology development and application of technology to meet vertical market business needs. He loves building teams of talented people and guiding them as they use technology and innovation to solve real world problems. Shane leads our team of engineers and IT professionals that deliver mobile and desktop applications, hardware, healthcare system interconnections and cloud-based services, all in support of Semler's mission to be a leader in medical risk-assessment.
Board of Directors
Mr. Semler has served as a member of and chairperson of our board since April 2023, and became executive chairman in June 2025. Mr. Semler is a public and private market investor in technology and media. His long/short investment fund, TCS Capital Management, which he founded in 2001 and converted into a family office in 2017, was at its peak among the largest independent technology, media and telecom investment funds worldwide. Mr. Semler has helped unlock value for several public companies, including Angie’s List, DHI Group, Geeknet, Nielsen/NetRatings and Xueda Education Group, as an active shareholder and/or board member. He currently serves on the board of Fundstrat Global Advisors – an independent financial services firm. Mr. Semler has previously served on three public company boards: Angie’s List, the Maven and Geeknet.com. Mr. Semler began his career as a journalist working for the New York Times and for the Moscow News in Russia. He is the co-author of two books published by Harper Collins: The Language of Nuclear War and The Businessman’s Guide to Moscow. Mr. Semler is the founder and chairman of the Bronx Baseball Dreams Foundation, which is a charitable organization that helps underserved New York City youth develop baseball and academic skills to earn college baseball scholarships. In 2019, Mr. Semler and his wife Tracy founded and developed the Raising Fame podcast franchise, partnering with NBA parents Dell and Sonya Curry. The podcast is currently in development as a TV show co-hosted by Sonya Curry and Lucille O’Neal, the mother of Shaquille O’Neal. Mr. Semler received a B.A. from Dartmouth College and a J.D. and M.B.A. from Harvard University.
Mr. Chang has served as a member of our board since April 2023. Mr. Chang serves as Chairman of Westlake Realty Group and Westlake International Group where he has worked for more than 40 years. Mr. Chang is a partner in Digikey Investment Holdings. Mr. Chang is also a principal partner in the San Francisco Giants of Major League Baseball. Mr. Chang was former Chairman of U.S. Rugby Football Union. Mr. Chang is currently on the Board of Ensysce Biosciences, Inc. and previously served on the Boards of the Asia Foundation and of the San Francisco Port and Social Services Commissions. Mr. Chang holds a Bachelor’s degree in Economics from Harvard University.
Mr. Messina has served as a member of our board of directors since August 2020. He has nearly 40 years of broad business experience as both a healthcare system professional and a technology solutions entrepreneur. Mr. Messina is the co-founder of HandsFree Health, the creator of WellBe®, the premier voice enabled virtual health assistant platform designed to help individuals access their health and wellness resources from home. Prior to co-founding HandsFree Health in 2016, he was a partner of West Corporation’s health advocate division for ten years, and he concluded his time there as co-president. From 2002 to 2006, Mr. Messina was the president of Rendina Healthcare Real Estate. Before that, from 2000 to 2002, Mr. Messina served as chief executive officer and president of Magellan Health and from 1998 to 2000 as the chief financial officer and head of business strategy of Aetna Health. For the decade prior to that, he was vice president of Financial Reporting at Cigna Corporation. Mr. Messina began his career as a certified public accountant at Deloitte. Mr. Messina earned a Bachelor of Science in accounting from the University of Notre Dame. We believe Mr. Messina’s extensive experience in virtual health and healthcare systems qualifies him to be a director of our company.
Dr. Douglas Murphy-Chutorian has served as a member of our board of directors since September 2012 and as our Chief Executive Officer since October 2012 (with a brief hiatus in April, 2023). He has had a broad, diverse career in healthcare over the past 30 years in numerous positions including clinician, academician, inventor, entrepreneur, CEO, chairman of the board, and consultant to financial firms. From 2005 to 2012, he was the managing director of Select Healthcare Capital, LLC. Dr. Murphy-Chutorian is a named inventor on more than 30 patents and has guided more than 50 products through various regulatory approval processes. His business career has included extensive involvement in all facets of the medical industry from financial, research and development, manufacturing, marketing and sales, regulatory, reimbursement, and clinical trials. His breadth of healthcare experience includes all major sectors of the industry: medical devices, health services, pharmaceuticals, biotechnology, and managed care. Dr. Murphy-Chutorian received his B.A. and M.D. from Columbia University. He completed his internal medicine residency at New York University/Bellevue Medical Center and his fellowship in cardiology at Stanford University Medical Center. He has served as a faculty member in interventional cardiology at both Stanford and Montefiore Medical Centers.
Ms. Brunell has served as a member of our board of directors since May 2025. Ms. Brunell is a top-rated podcast host, educator and media commentator in the Bitcoin industry. As the leading Bitcoin podcast, 'Coin Stories' is a deep, engaging dive into the revolutionary Bitcoin network and how it intersects with global economics and technology trends. Previously, Natalie was an award-winning TV journalist and investigative reporter. For more than 10 years she covered in-depth local and national news topics and holds a regional news Emmy for breaking news coverage. Natalie was also an adjunct professor of advanced communication and visual storytelling at the University of Southern California. She holds a Master’s of Science in Journalism from Northwestern University.