About HDI
Operators who have done this before.
HDI brings NICaS to US primary care, with the team, training and support to make it the standard of care for controlling high blood pressure.
Our mission
The Quadruple Aim, every day.
Better patient experience
A painless test and fewer failed medications.
Better outcomes
Control in weeks, confirmed by a repeat test.
Lower cost
Fewer visits per patient and less trial and error.
Less clinician burden
Clear information, organized for quick decisions.
Founders
The team behind HDI.
Dixon Thayer
Managing Partner
Former Ford and Kimberly-Clark executive. As CEO, he turned around I-trax, a national workplace primary-care company, and sold it to Walgreens in 2008.
LinkedInDr. Jay Rosan
Co-Founder
Family physician and 21-year US Healthcare medical director who pioneered paying physicians for quality. Senior roles at I-trax and Walgreens.
LinkedInMark Dumoff
Co-Founder
Growth executive at GE, RR Donnelley and Bowne & Co. Co-founder of ReviveHealth, KayAI and Healing Spaces, a nonprofit for children battling cancer.
LinkedInOur partner
Built with InnovaMed Sphere.
NICaS is made by InnovaMed Sphere (IMS) in Israel. HDI is the US distribution partner of IMS under a binding agreement signed October 22, 2026.
HemoDynamic InfoThe science
Five decades in the making.
1973
Whole-body bioimpedance shown to estimate stroke volume
then1998
Prototypes correlate closely with the invasive gold standard
then2006
NICaS developed
then2015
Hemodynamic Navigator patented
then2026
14,058-patient study published in the American Journal of Medicine
Aligned with the movement to get the medications right
HDI shares the goals of the GTMRx Institute: the right medication for each patient, chosen and confirmed with the right information.