Justin Doherty


Justin Doherty brings over 20 years of international experience in integrated facility management and software solutions for multiple industries across the UK, Europe and the USA. Justin previously owned and operated Axis Control Systems for over 10 years, where he started, grew and eventually sold the business. His main area of expertise is operational management and process improvement within the technological and healthcare field, with experience ranging from security systems to healthcare solutions and dementia home health care facilities.

Justin was previously CEO of Medical Mime, an InnovaQor company specializing in healthcare technologies for medical practices throughout the United States. He is currently a board member for Pathlogic.

Sharon Hollis

CEO, Director

Sharon transitioned from property sales in NY and Florida into Healthcare in 2010 when she oversaw the development of a proprietary lab ordering and reporting software, Advantage, which allowed doctors and clinical laboratories to evolve from paper orders and reports with minimal disruption and cost. Sharon oversaw the evolution of Advantage to a fully integrated product that allowed real time tracking of lab samples and their results from sample collection to reporting and billing. Sharon sold her interests in this software into the predecessor of Rennova Health, Inc., Medytox Solutions, Inc. in 2012 and was the VP of Operations of the corporate office to 2015 overseeing sales development, development of software products and their integration and medical billing related processes. From October 2015, as the owner of PetVetCorp, Inc., Sharon built a veterinarian health records software and application to facilitate pet records and scheduling of various services for an owner, in an App for their phone.

Sharon re-joined Rennova in 2016 and became the COO of the software division, HTS in 2018. Sharon has been focused on setting direction for the software division in anticipation of a separation from Rennova Health and has been engaged in the provision of software solutions to Rennova Health’s hospital entities for real-time reporting and analysis of billing related data in easy to utilize dashboards for management. Sharon’s focus is on the provision of easy-to-use software solutions that create efficient solutions and visual interpretation of necessary and actionable data and information.

Gerard Dab


Gerard Dab is a pioneer of the modern healthcare informatics industry – He is notably the co-founder of one of the world’s most innovative systems for the automation of clinical workflow in hospitals and medical facilities that had been originally developed at McGill University Royal Victoria Hospital.

His companies provided advanced software platforms that power clinical applications at point of care in hospitals and clinics developed at a cost of some fifty million dollars.

These applications offered advanced patient management clinical systems with full diagnostic and medical content including decision support that have been developed by senior McGill University practitioners and were used by more than 1000 clinicians and care givers in the US and Canada.

Prior to his work in the healthcare field, Mr. Dab worked for advertising giant Foote, Cone & Belding of Chicago following his graduation from McGill University. During the 1980s, he founded and was the managing partner of Productions Publi-Cité, a film and television finance company that helped raise some 100 million dollars in production money for independent film producers.

During the 1990s, Dab Communications was noted for producing weekly information programs on Canadian network television about investing, created with the support of Maryland Public Television and Louis Rukeyser, long-time host of Wall Street Week. The company also produced TV programming that tackled pressing global healthcare issues.