Nathaniel Maor is a Product Development Engineer.  Before joining the company in October 2015, Mr. Maor gained internship experience in manufacturing operations and clinical trial management. Nathaniel graduated from Drexel University with a BS/MS in biomedical engineering with a focus in biomedical devices.

Greg Walters is President/CEO/Co-Founder and has 23 years of technical leadership experience within the medical device industry, the last five with Essential Medical.  In his prior role as VP of Product Development at Kensey Nash Corporation, he developed embolic protection devices, thrombectomy catheters and other specialty lesion crossing systems, and led the initial development and commercialization efforts of Angio-Seal.  In addition to his responsibilities in Product Development, he was heavily involved in Business Development activities and patent analysis.  Prior to Kensey Nash Mr. Walters was employed by General Electric in various engineering roles.   He is a graduate of GE’s corporate engineering program, has a BS in Physics from the Millersville University of Pennsylvania, and a Masters of Management from the Pennsylvania State University.  Greg is a listed inventor on 17 US and EU patents in medical devices with numerous patents pending.

​Closure Evolved.

Jason Keiser is a Senior Operations Manager and brings 15 years of manufacturing and product development experience within the medical device industry.   In his prior role, he was responsible for the development and implementation of manufacturing programs for devices used in thrombectomy, intravenous drug delivery, vitrectomy, phacoemulsification, tympanic temperature measurement and in-vitro diagnostic procedures.  Jason has an MBA from Drexel University and a BS in Bioengineering from the University of Pittsburgh.

Todd Grintz is a Senior Engineering Manager and the MANTA Program Manager. He has been with Essential medical for 3 years, during that time Todd and the team developed the MANTA design to a final product that was used in a first in human study in November of 2014.  Todd spent 4 years as a Senior Project Engineer at Teleflex and has over 20-years of product development experience.  He is a listed inventor on 7 US patents.  He graduated from Drexel University with a BS in mechanical engineering.

Todd Sorzano is the Director of Operations and brings 17 years of product development, engineering management, and operations experience.  His responsibilities include the execution of all aspects of both the X-Seal and MANTA programs, including facility development and ISO certifications.  Under Mr. Sorzano’s leadership the company became ISO 13485 certified, X-Seal was awarded CE mark, and MANTA was engaged in initial human trials.  Todd has a BS in Mechanical Engineering from Drexel University.

Angela Waltman is a Senior Clinical Project Manager.  Angela brings over 21 years of clinical trial experience including investigational drugs and medical devices. Hands-on experience with study contracts and budgets, site selection, site management, all phases of study monitoring, and study reporting during and after. Additional experience includes working within various project teams and administrative oversight of an investigator initiated trials program.

Dr. Gary Roubin MD, PhD. FSCAI, FACC is CMO/Co-founder and a world-renowned interventional cardiologist.  Dr. Roubin assists the company with device development, clinical evaluation, and corporate strategy.  He has a rich history and experience in interventional cardiology and entrepreneurial companies including Cook, MedNova, and The Medicines Company, Dr. Roubin is perhaps best known for implanting the first US stent and his pioneering work in carotid artery stenting.  He is experienced with nearly every interventional product, routinely uses vascular closure devices, and brings a wealth of knowledge to company activities.  Dr. Roubin is the author of 520 papers, abstracts, book chapters, and books related to interventional cardiology.

Sam Nardone is a Product Development Engineer and Program Manager for the X-Seal program. Mr. Nardone served as an engineering intern for Essential Medical during the summers of 2011 and 2012 before graduating college and joining the company full-time in June 2013. Sam holds a BS in Bioengineering from the University of Pittsburgh and is a certified EMT.