Our Team

William Hollander

CEO & Founder

Bill Hollander, a self-educated scientific instrument maker and businessman, began his career in 1979 at JILA, a joint NIST/CU Boulder research institution. In 1993, Bill founded High Precision Devices (HPD) with one employee. HPD grew to a 60+ employee company (sold in 2020 to FormFactor) known worldwide for excellence in engineering and manufacturing of high-quality precision scientific instruments. At CaliberMRI (a spinout of HPD), Bill brings his experience and expertise to develop new phantoms and companion QC software to advance qMRI.

Gordon Kessler

Founder and General Counsel and Chief Administrative Officer, AiCure

Gordon Kessler was previously the first Chief Patent Counsel at LeCroy Corporation. Gordon’s law firm experience includes founder of Kessler Law and Consulting PLLC, partner at the boutique IP law firm Frommer Lawrence and Haug LLP where he was a founding attorney, and associate in the IP department at Stroock and Stroock and Lavan.

While at LeCroy Corporation, Gordon developed and implemented a strategic plan for managing all LeCroy IP, oversaw patent and other company litigation, and was involved with the purchase of two companies by LeCroy. As a partner at Frommer, Lawrence and Haug LLP Gordon managed important client relationships, oversaw junior attorneys, and performed all aspects of patent and IP prosecution and management. Gordon has close to 20 years of experience in preparing patent applications, infringement and invalidity opinions, and is registered to practice before The United States Patent and Trademark Office.

Mr. Kessler holds an MBA from the Wharton School of Business, a Juris Doctor degree from Duke University, and a Bachelor’s degree in systems engineering from the University of Pennsylvania.

Neal Masia

Co-Founder and CEO, EntityRisk, Inc., Adjunct Professor at Columbia University

Neal Masia is Co-Founder and CEO of Entitity Risk. EntityRisk’s software enables healthcare innovators and payers to measure and manage uncertainty.

Neal is also founder of Health Capital Group, an economics-driven research, advisory and healthcare innovation firm where he serves as a consultant and advisor to a variety of healthcare companies and healthcare-focused investment firms.

Neal spent nearly 18 years rising through the ranks at Pfizer Inc, most recently as Chief Economist and Vice President of Patient and Health Impact. As a member of Pfizer’s Senior Leadership Council, Neal advised the Executive Leadership Team and Board of Directors on how global economic forces would shape the healthcare industry, and he worked closely with the CFO on all significant strategic transactions and business development opportunities.  Neal built and managed major commercial enterprise platform functions including Global Pricing, Real World Data and Analytics, Patient-Centered Outcomes, and Market Access/HTA Methods and Capabilities. He also spent nearly 10 years in Finance, where he led Capital Strategy, International Treasury, investment allocations in Pfizer’s $16 billion pension plan, and Capital Markets. Earlier in his Pfizer career Neal held roles in public policy and corporate strategy.

Before joining Pfizer, Neal worked as a consultant at the Advisory Board Company, as an economist with the U.S. Congressional Budget Office, in planning and marketing at a venture-backed insurance technology startup, and as a policy advisor to Senator Bill Bradley during his 2000 Presidential campaign.

Neal earned a B.A. (High Honors) in Mathematical Economics from Colgate University and a Ph.D. in Economics (specializing in Public Finance and Game Theory) from the University of Rochester.

David Stone

Owner, Accidental Ranch

David Stone, Founder and Managing Director, Liberty Tree Advisors, LLC, Partner, Flagship Ventures, Managing Director and Head of Biotechnology Equity Research at Cowen & Company, Project Manager and Director of Corporate Communications at Genetics Institute.

David brings to CaliberMRI more than 30 years of experience in management, analysis, investment, C-Suite, and Board Member roles in life sciences companies. David earned a BS in Microbiology from Colorado State University and an MBA from Harvard University.

Paul Tofts, Ph.D.

Advisor

Paul Tofts gained a 1st class degree in Physics from Oxford University, and a PhD at Sussex University in Nuclear Magnetic Resonance (NMR). Drawn by the ethical appeal of medical applications, he collected NMR spectra from newborn babies at University College London (UCL), and was the first to measure metabolite concentrations in the living brain. At the Institute of Neurology (UCL) for 35 years, he mathematically modelled the uptake of Gd in tissue (the ‘Tofts model’ is now standard) to measure in-vivo physiology and biology. He co-edited two influential books on quantitative MRI in the brain. He is now Emeritus Professor at Brighton and Sussex Medical School, University of Sussex.

Jeffrey L. Evelhoch, Ph.D.

Advisor

Jeffrey L. Evelhoch, PhD is a consultant for the discovery, development, qualification and implementation of biomarkers and diagnostics. He retired from his role as Vice President and Head of Translational Biomarkers at Merck Research Laboratories (MRL) in August 2020.  In that role, he led a group of 100 scientists, with expertise in quantitative imaging and molecular assays, responsible for development, qualification and use of biomarkers to inform pipeline decisions, including support for drug and diagnostic approval at Merck.  Dr. Evelhoch joined MRL in 2008 as Vice President and Head of Imaging and was named Vice President and Head of Translational Biomarkers in 2015. He joined Merck after four years at Amgen as Executive Director and Head of Imaging Sciences, which followed 2 years at Pfizer Global Research & Development (initially Pharmacia) as Director of Structural Imaging.  Prior to joining the biopharmaceutical industry, Dr. Evelhoch was Professor of Internal Medicine, Oncology and Radiology at Wayne State University School of Medicine focused on quantitative magnetic resonance imaging biomarkers in oncology.

Roger Hauptman, J.D.

Hauptman, LLC

Roger Hauptman has been practicing corporate and technology law for almost 30 years, working almost exclusively with early-stage technology companies and financial service businesses.  Roger holds an A.B. from Duke University and a J.D. from University of Michigan Law School.

Roger has assisted in the capital formation, and ultimately, liquidity event process for numerous companies, and in many instances has helped effectuate a sale of institutionally funded entities to publicly traded companies.

William Hollander

CEO & Founder

Bill Hollander, a self-educated scientific instrument maker and businessman, began his career in 1979 at JILA, a joint NIST/CU Boulder research institution. In 1993, Bill founded High Precision Devices (HPD) with one employee. HPD grew to a 60+ employee company (sold in 2020 to FormFactor) known worldwide for excellence in engineering and manufacturing of high-quality precision scientific instruments. At CaliberMRI (a spinout of HPD), Bill brings his experience and expertise to develop new phantoms and companion QC software to advance qMRI.

Debi Holmes

Financial Controller

Debi Holmes is a technical financial leader with more than twenty years in manufacturing and global supply chain management. Debi brings extensive accounting and business management, human resources, payroll and benefits administration, and systems analysis experience to CaliberMRI. She is a solutions-oriented go-getter driven by process improvements and empowering others with the tools needed for success.

Debi is an avid motorcyclist and photographer who often delights in both passions in her free time.

Chamni Jayarathna, Ph.D.

Analytical Research Chemist

Chamni Jayarathna, Ph.D. in Chemistry, is an organic, analytical, and polymer chemist and an environmentalist. She received her Ph.D. from UT Dallas studying the transition metal-catalyzed polymerization of heteroallenes, specifically of Cholesteric gels and Cyclopolymerizations. At CaliberMRI, Chamni applies her scientific knowledge and experience to the research and development of quantitative MRI.

In her free time, she enjoys volunteering on climate change mitigation, hiking, and mastering new skills.

Shannon John

Assembly Technician

Shannon John is a Veteran of the United States Army with experience in production manufacturing which began at Prodyn Technologies, located in Albuquerque, NM, a company that supplies high quality electromagnetic pulse instruments to research labs, universities, military and aerospace. She is able to apply her extensive experience in assembly and logistics at CaliberMRI. She is a Veteran of the United States Army.

In Shannon’s free time, she enjoys the outdoors, photography, and traveling.

Todor Karaulanov, Ph.D.

Chief Scientist

Todor Karaulanov, Ph.D. in Physics, is leading the development of CaliberMRI’s QA/QC MRI platform and its introduction to clinical practice. Todor’s experience spans from research on atomic-based magnetic field sensors (IE/BAS, Bulgaria, and UC Berkeley) through the realization of the first ultra-low field MRI device based on atomic sensing technology (LANL) to the development of a unique platform/instrument for early specific cancer detection currently in use at the Imaging Physics Department of MDAnderson Cancer Center.

Kevin Miller

Director of Business Development

Kevin Miller has over three decades of experience with advanced technology and business development and program management. At CaliberMRI, Kevin applies his scientific and business experience to the identification and development of new business opportunities, customer support, and strategic development.

Martha Moore

Grants Administrator

Martha Moore is a CPA with over thirty years of experience in public, private, and non-profit accounting. Martha assists CaliberMRI with the filing of government grants and contracts and various accounting projects.

Martha spends her free time giving rescue dogs a second chance at life while adding a little traveling, hiking, and singing into the mix.

Callie Weiant

President/Chief Revenue Officer

Callie Weiant’s professional experience includes working with startups, including in life sciences, and responsible investing. Callie started her career practicing law at McKenna Long & Aldridge (currently Dentons).

In her free time, Callie embraces Colorado’s outdoors whenever possible and serves as a volunteer board member of Impact on Education, a local non-profit that supports Boulder Valley Public Schools.

John Wenzel

Manufacturing Engineer

John Wenzel’s career started in 1985 as a Laser Electro Optics Technician for Hughes Aircraft Company, when it was still Hughes Aircraft. John has since then gained 37yrs. of experience in new product design/ introduction, production, and service/repair of advance instrumentation. Highlights of his career are a publication in Advanced Solid-State Photonics 2005, “High Brightness, Rapidly Tunable, Cr: ZnSe Laser, also for Lockheed Martin designed Orion test panels to simulate pad ups, splice-joints and zero gusset joints for FEA tests and validations, and recently a TRAS Actuator Test Stand for Woodward Corporation.