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Our Leadership Team
Nesim Bildirici
Founder & CEO
Dr. Zebadiah Kimmel
Chief Strategy Officer
Doreen Salek
Chief Medical Officer
Jon Shankman
Chief Analytics Officer
Steve Tsamaras
Chief Financial Officer
Warren Stilwell
Chief Information Officer
Jeff Rector
EVP, Veterans Administration
Rebecca Marcisso
EVP, Client Success
Tom Kramer
VP, Software Engineering
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Nesim Bildirici
Founder & CEO
Drawing on over 20 years of leadership expertise, Nesim Bildirici has demonstrated a consistent ability to assemble top-tier management teams on a global scale. Before establishing AMC Health, he co-founded RSL Communications, Ltd., and served as a Managing Director for R. S. Lauder, Gaspar & Co., a venture capital fund backed by the Lauder Family of Estee Lauder. In this role, Mr. Bildirici played a key role in managing the initial investment in RSL Communications. His prior experience includes a tenure as an investment banker with Morgan Stanley. Mr. Bildirici is an alumnus of Harvard Business School, holding an MBA, and earned his BA from Columbia University.
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Dr. Zebadiah Kimmel
Chief Strategy Officer
Zeb is a multi-disciplinary professional with an MD and MBA, boasting extensive expertise in implementing advanced health-tech capabilities across diverse care settings and therapeutic areas. His notable achievements include holding VP-level positions in Product and Engineering at Medically Home, a prominent provider of hospital-at-home services. Previously, as a manager in McKinsey's Healthcare Technology Practice, he led teams serving global governments, hospitals, pharmaceutical firms, and medical device manufacturers. Zeb was among the first ten Federal Office of the National Coordinator for Health Information Technology (ONC) members. He played a crucial role as a founder of the precision medicine startup Atlas5D. Additionally, he has authored numerous patents and publications in home care and digital health. Zeb completed a Postdoctoral Fellowship at Harvard Medical School and Brigham and Women's Hospital, holds an MD from Northwestern University Feinberg School of Medicine, an MBA from MIT Sloan, a master's degree in computer science from the University of Illinois at Urbana-Champaign, and a bachelor's degree in math-physics from Brown University.
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Doreen Salek
Chief Medical Officer
Doreen holds a Bachelor of Science from Colorado State University and an MBA in Health Care from American Sentinel University. She studied nursing at Geisinger School of Nursing in Danville, PA, and has been a Registered Nurse for 24 years. Before joining AMC Health, Doreen dedicated 20 years to Geisinger Health System, serving as an inpatient RN in the Adult Intensive Care Unit. In the Innovations department, one of her initial projects involved integrating AMC Health RPM into the outpatient case management program. A homebody, she enjoys spending time with her husband, son, three pets, and friends. Doreen also takes pleasure in walks, tennis, and movie-watching. Her preferred travel destination is Cape Cod, Massachusetts.
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Jon Shankman
Chief Analytics Officer
Jonathan has been with AMC Health for over 17 years, focusing on optimal ways in which remotely gleaned data and the latest virtual care tools can be woven into established best practices for managing costly conditions. With over 30 years of experience as a research gerontologist, he spent the first half of his career developing and analyzing paradigms of community-based chronic care delivery for vulnerable populations. Prior to joining AMC Health, he held leadership positions in Metropolitan Jewish Health System’s Institute for Applied Gerontology, where he co-founded a unique HMO designed to help dually eligible individuals with advanced chronic illness remain in non-institutional settings. He holds a Master of Public Health in Gerontology, an MBA, and a BA in Literature & Philosophy, all from Columbia University. Outside of work, Jonathan enjoys hiking, travel, and reading.
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Steve Tsamaras
Chief Financial Officer
Steve brings over 20 years of finance experience from large public accounting and global international companies. Most recently, he served as the Chief Accounting Officer at BVI Medical. Steve held divisional finance roles throughout his career with prominent companies such as General Electric, Siemens, and Liberty Mutual. An alumnus of KPMG and PricewaterhouseCoopers, he obtained his C.P.A. license in the state of Massachusetts and holds a BS in accountancy from Bentley University.
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Warren Stilwell
Chief Information Officer
Warren, who joined AMC Health in February 2017, brings over 25 years of management experience in Information Technology and 17 years of telehealth expertise. Before joining AMC Health, he served as the VP of Information Technology and Product Development at Viterion, a joint venture between Bayer and Panasonic. Over the last decade, Warren played a pivotal role in obtaining and maintaining the ATO (Authority to Operate) for operating within the Department of Veterans Affairs telehealth program. Since 2014, he has successfully led multiple migrations from on-prem-based hosting to the cloud, resulting in significant monthly cost reductions, increased reliability, and scalable performance while ensuring regulatory compliance. Warren's specialties include Business Continuity and Contingency planning, Disaster Recovery, Cybersecurity, IT Process Improvement, and On-Prem to Cloud migration strategy. In his spare time, he enjoys playing classic rock on his Supro guitar and spending time with family and friends.
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Jeff Rector
EVP, Veterans Administration
Jeff leads the Veterans Health Administration Home Telehealth contract and the VA Sales Team at AMC Health. With over 20 years of clinical sales experience, he has successfully launched and managed several Chronic Disease programs, focusing on Cardiac and Adult Respiratory conditions. Jeff resides in Southern Illinois with his wife, Jana, and two daughters. Cayleigh is currently studying Chemical Engineering at the University of Illinois, while Gracie aspires to pursue medicine. Beyond work, Jeff enjoys spending time outdoors with family and friends, accompanied by his Labrador Retrievers, "Pepper and Olive."
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Rebecca Marcisso
EVP, Client Success
Rebecca Marcisso, AMC Health's EVP of Client Success, specializes in devising client engagement strategies across healthcare services, Remote Patient Monitoring (RPM), and SaaS platforms. Her central focus is optimizing client satisfaction and promoting positive clinical outcomes through a goal-oriented, consultative approach. In her prior roles as Director of Client Success at Carenet Health and Senior Client Executive at Carenet Health (formerly AxisPoint Health), Rebecca consistently achieved client success by prioritizing clients' happiness. She secured multi-year renewals, negotiated revenue additions, and implemented portfolio-wide strategies to ensure clients were satisfied with the services. At AMC Health, Rebecca's steadfast commitment to operational efficiency and the client's journey underscores her dedication to delivering impactful results in the healthcare industry.
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Tom Kramer
VP, Software Engineering
Tom Kramer brings over 15 years of experience in cultivating the convergence of technology and leadership to AMC. Before joining the company, Tom led the Product Engineering group at MVP Healthcare, gaining firsthand insights into leveraging technology for enhanced patient outcomes. With a decade-long consulting background across public and private sectors, including Health and Human Services, Tom brings a wealth of knowledge to AMC. He prioritizes people, process, and technology – in that order – as foundational elements for achieving AMC's patient-first mission to enhance the healthcare delivery model. Residing in Ballston Spa, NY, with his wife and three children, Tom actively supports his kids at their sporting events, coaches high school football, and explores new travel experiences when not immersed in his professional endeavors.
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