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About us

Mark Summers set out on his journey to solve the problem of slow clinical trial enrollment by founding ThreeWire. As trailblazers in the field of patient recruitment, the investment community initially had its doubts, and while most said no, the company moved forward with the support of a few close investors. Over time, Natan Paz joined to expand the company internationally, beating the odds (and those initial doubts) and in the end, fundamentally changing the clinical trial market, becoming an industry leader, operating in over 40 countries worldwide and creating billions of dollars in value. Today, the field of patient recruitment attracts mainstream investments and acquisitions.

It all started in 1999…

While one problem was being solved, Mark and Natan recognized another issue. Patients came home after treatments in the hospitals and had to deal with debilitating side effects, questions about dosing, and difficulty reaching their care teams. At the same time, care teams were becoming overwhelmed by patient load and having to manage processes from afar. It was clear that the process of at-home cancer medication treatment was broken.

With experience trailblazing new fields and supported by the same investors, Dosentrx and ReX were born. Alan Paz joined the team as founder and CTO to build the platform. Similar to ThreeWire, Dosentrx works together with data, service technology, pharmaceutical companies, doctors, and pharmacists to ensure that home treatment is effective.

The Dosentrx team


Alan Paz


An inventor entrepreneur who holds over 20 patents, Alan invented, designed, and developed the ReX platform. Alan also developed a medical device business which was sold to Baxter.

“My passion is to mobilize the disciplines of physics, mechanics, plastics, electronics, and software to create complex devices that are easy to use, easy to manufacture, and inexpensive to produce.”

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Natan Paz

CEO and co-founder

Natan cofounded the European subsidiary of ThreeWire, scaling the business to over 40 countries. Following the acquisition of ThreeWire served as General Manager of the Europe region for WCG, a global leader in clinical trial services.

“Managing dozens of clinical trials, I noticed we over-burden patients and care teams, putting patients at risk, and making decisions based on unreliable data. I am proud to lead Dosentrx on our mission to revolutionize at-home cancer care.”


Prof. Chen Shapira

MD, Medical Director

A cardiologist by training, Chen’s passion for practicing medicine to improve peoples’ lives led her to roles including CEO of a hospital and an HMO. Chen also served on the boards of the Israeli Hospital Directors Society and the Auditing Committee of the Israel Medical Association.

“It’s a dream come true to know in real-time how your patient is reacting to the treatment that you prescribed, to be able to intervene quickly and to know that he really took his medication.”


Molly Hair

VP Commercial Operations

Molly has a rich background in business development, account management, and recruitment in the pharmaceutical world. Before joining Dosentrx, Molly was on the ThreeWire and WCG teams. 

“ReX's benefits can not be understated. When I consider how it will enhance patients’ communication with their care teams and their overall experience…well, I’m just beyond excited to play a role on the Dosentrx team..”


Kfir Meidav


Kfir has vast experience designing, implementing, and debugging RT Embedded systems for the communications, UAV, and medical industries. Kfir has led multiple multidisciplinary startup R&D teams to successful IPOs.

“I’m fascinated by the prospect of tackling intricate and systematic challenges, especially within the realm of real-time embedded systems. At Dosentrx, this comes to head with the challenge of stabilizing and scaling the current technology platform, coupled with the endless possibilities for future development.”


Kety Bardugo

Director of Operations

With over 18 years of experience in the medical device industry, where she scaled companies from R&D to mass production, making sure that ReX always meets the highest standards.

“The skills I've accumulated during my career come together with this position. This was a real opportunity for me to grow and take the next step in my career.”


Mark Summers


Veteran entrepreneur and founder of ThreeWire, a pharmaceutical services company he grew to 500 employees and sold to a leading global clinical research services firm. Previously a senior executive at Spine-Tech and Alcon.

“Having served on Dosentrx’s Board since 2016 I knew the company had all of the elements for success… Therefore, when the Board asked if I would take on the Executive Chairman role, I couldn’t say no.”


Liron Levi-Gabay

CFO and General Counsel

 Liron brings legal and financial expertise, having trained at The Hebrew University of Jerusalem and earned an MBA in Finance. She supports female entrepreneurs through Yazamiyot and serves as an Independent Director at Moriah Jerusalem Development Corporation, overseeing a budget of NIS2.4 billion annually.

“I'm excited to bring my legal and financial expertise to Dosentrx and contributing to its growth and success.”


Kristopher Fuhr

VP Business Dev.

Kris has held roles of increasing responsibility including management and corporate strategy in the pharmaceutical industry at Shionogi, the medical device industry at Hologic, and in the life science industry at WCG.

“Dosentrx is the epitome of helping not only patients, but all people.  Uniquely, we help Industry deliver upon their commercial objectives while simultaneously decreasing costs for insurers while also optimizing healthcare provider operational workflows.”


Kelsey Heiland

Associate Director, Commercial Operations

Kelsey, an operations pro, works closely with study teams, physicians, execs, and sponsors. Her diverse roles include onboarding, training, and co-developing new services. She excels in process improvement and mentoring.

“The ReX combines new technology while re-envisioning existing technology to really make an impact in patient’s lives. I am honored to once again be on a team that is revolutionizing healthcare.”


Yaniv Ben-Asher

Mechanical Engineer Manager

Yaniv brings over two decades of experience in designing and manufacturing medical devices for startups and multinational companies like Becton Dickinson and Phillis. As our mechanical lead for the ReX device, he prioritizes patient well-being and ensures top-quality care standards.

“I'm delighted to contribute to Dosentrx, where our dedication to patient well-being and innovative medical devices resonates with my passion for ensuring the highest standards of care.”


Yael B Gadot

Sr. Product Manager

Yael's background in UX/UI design brings to the team extensive knowledge in product development, research, strategy, and user-centric design. Yael excels in seamlessly connecting the domains of research, design, and technology to craft meaningful and delightful user experiences.

“Being part of Dosentrx enables me to combine my passion for product design with the satisfaction of contributing to a game-changing product. It's an exhilarating and challenging experience.”

External board members

Dan Beck

Dan is a partner in DPI, a global trading company for all dairy products as well as corresponding futures and derivatives, and has over 26 years experience in that industry. Dan has had a key role in the success of both ThreeWire and Dosentrx. He brings business acumen, entrepreneurship, and risk management experience to the board.

Jerry Lieberman

Jerry currently serves as a special advisor to Reverence Capital Partners, a private investment firm, sits on the Board of Directors of Teva Pharmaceuticals Ltd. as Audit Chair, and Entera Bio Ltd. as Chairman. He previously served on the boards of Forest LaboratoriesAllianceBernstein and several Mutual Fund Boards.  Jerry graduated with honors from the University of Connecticut, elected to Beta Gamma Sigma, the international business honor society and became a Certified Public Accountant while a manager at Arthur Andersen. 

Having held executive positions in some of the world’s leading financial institutions including Citibank, Fidelity, and the COO AllianceBernstein, Jerry adds Human resources, financial, risk management, and executive experience in the financial and pharmaceutical industries to our board. 

Frank Sheehy

Frank has more than thirty years of executive experience in the healthcare industry. Throughout his expansive career Frank has held executive leadership roles in managed care, insurance companies, pharmacy benefit management, and specialty pharmacy in both public companies and private equity.  In addition, Frank does extensive consulting and serves as a board director for a number of entities in the healthcare field.

Frank served as Chief Executive Officer of EnvisionRxOptions, a pharmacy benefit management and insurance company, until 2018.  Previously Frank was President of Accredo Health, Medco's specialty pharmacy, and served as a member of Medco's Executive Committee.  Prior to Accredo, he held senior executive and general management positions with Medco, Aetna, and US Healthcare. 

Frank brings to the board executive strategic insights as well as a deep understanding of the healthcare market including managed care, payers and specialty pharmacy. 

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