Leadership
Our Team
MedSystems is guided by an experienced group of leaders and subject-matter experts committed to building a coordinated network of companies serving complex indoor environmental and property-related needs.
Yaron Lief
Co-Founder & Principal, MedSystems
Yaron Lief is a co-founder and principal of MedSystems, bringing entrepreneurial leadership and a track record of building mission-driven organizations. His work focuses on coordinating specialized companies to serve patients and providers navigating complex indoor environmental challenges.
Justin Sachs
Partner & Growth Strategist
Justin Sachs is a nationally recognized business growth strategist and author who brings expertise in leadership development, business scaling, and mission-aligned partnerships. He plays a key role in expanding the MedSystems network and building pathways between brands and the professionals who need them.
Eric Dorninger
Partner & Operations Lead
Eric Dorninger brings deep operational experience to the MedSystems network. His background spans environmental services, business development, and field operations management — ensuring that the brands within MedSystems deliver consistent, professional service to every client they serve.
Osmin Zelaya
Partner & Field Operations
Osmin Zelaya contributes hands-on operational expertise to the MedSystems family of companies. With extensive field experience in environmental and remediation services, he helps ensure that client engagements are executed with professionalism, precision, and care.
Bill Weber
Partner & Business Development
Bill Weber brings a strong background in business development and client relationship management to the MedSystems network. He plays a key role in connecting the network with referring professionals, healthcare providers, and partner organizations who benefit from coordinated environmental service delivery.
Anna Branch
Partner & Client Relations
Anna Branch brings warmth, clarity, and deep client-service instincts to the MedSystems network. Her focus is on ensuring that patients and families who engage with MedSystems and its affiliated brands receive responsive, compassionate, and well-coordinated support from first contact through project completion.
Michael Schrantz
Partner & Environmental Science Lead
Michael Schrantz is a leading environmental diagnostics professional with extensive expertise in building science, mold investigation, and indoor air quality evaluation. He brings technical credibility and scientific rigor to the MedSystems network, supporting inspection and assessment services across affiliated brands.
CIRSX Global
Strategic Partner Organization
CIRSX Global is a strategic partner within the MedSystems network, contributing expertise in CIRS-related education, clinical coordination, and professional development. Their work supports the broader mission of connecting patients, providers, and service professionals navigating biotoxin illness and indoor environmental health challenges.
John Banta
Partner & Environmental Consultant
John Banta is a seasoned environmental consultant with decades of expertise in indoor air quality, mold investigation, and building science. He brings deep technical knowledge and field experience to the MedSystems network, supporting the development and credibility of environmental assessment services across affiliated brands.
Yvonne Barrero
Partner & Network Relations
Yvonne Barrero brings deep expertise in network coordination and professional relations to the MedSystems family. Her work bridges clinical communities and service providers, ensuring that referring professionals and patients receive timely, appropriate guidance as they navigate the MedSystems network.
Meet the Full Team
Individual team member profiles, bios, and credentials are being added to this page. Contact us to connect with a specific member of the MedSystems leadership or operational team.
Get in TouchWhat Guides Us
Our Operating Principles
Medical Awareness
We understand that the people who need our services are often navigating serious health challenges. Every touchpoint in our network reflects that awareness.
Professional Process
Each brand within MedSystems is held to documented standards. Process, documentation, and accountability are not optional.
Coordinated Delivery
No single company can serve every need. Our network is designed so clients can be routed to the right resource without having to start over.