Our Advisors

Medtrition Clinical Advisory Board. We recognize that optimal nutritional management should be a combined clinical effort. Therefore, we have established a clinical advisory board (CAB) consisting of Key Opinion Leaders (KOL) to assist us in our approach. Based on the clinical background and nutritional expertise of our CAB members, each member provides a perspective of how nutrition intervention, and their clinical role in the healthcare system, play a part in patient care. Both teams share a common value of nutritional care as a necessary modality of intervention for the health and well-being of all.

We are honored to have these KOLs as part of our advisory team. Please take a moment to learn more about our CAB members and their impressive backgrounds in the world of clinical nutrition and medicine.

Elizabeth (Beth) Lyman MSN, RN, CNSC, FASPEN, FAAN

Currently a Nutrition Support Consultant as a professional nurse with multiple qualifications in the area of enteral access device, enteral feeding tolerance, in addition to pediatric and parenteral nutrition expertise. Most of Beth’s career was at Childrens’ Mercy Hospital in Kansas City, MO as their Nutrition Support Team Sr. Program Coordinator. Beth has numerous publications, awards and recognitions along with participating in much research and many presentations, with a focus on safe enteral formula delivery. Beth is active in the Patient Safety Movement, The American Society of Parenteral and Enteral Nutrition (ASPEN) and started the Global Enteral Device Supplier’s Association (GEDSA) CAB and therefore very familiar with ENFit.


Most of Carol’s career and current position is as a Clinical Nurse Specialist; Focus – Metabolic and Nutrition Support Member at Sanford USD (University of South Dakota) Medical Center Nutrition Support Team. Carol has received multiple scholarships, grants and awards. This includes Nurse of the Year, ASPEN Distinguished Nutrition Support Nursing award among many others. Her current professional affiliations are with ASPEN, NACNS (National Association of Clinical Nurse Specialists), & NBNSC (National Board of Nutrition Support Certification – ASPEN). Carol provided numerous presentations regarding Enteral and Parenteral Nutrition in addition to other professional topics for health care providers and students as well as surgical residents.


Jan is currently the Director of Nursing Research and Professional Practice at Parkview Regional Health System in Fort Wayne, Indiana since 2016 and continues to run her own consulting business for a healthy culture, nursing empowerment, clinical research and evidence based practice, and education on various clinical topics. Jan has spent much of her career in ICU practice, research and education. She does have a graduate certificate in Innovation and Implementation Science. Jan serves on the ASPEN Enteral Nutrition Committee and is a manuscript reviewer for multiple nursing associations. Jan is a recipient of multiple awards and honors in ICU nursing, research and other nursing related research. Also, an author of many chapters on nursing and a book titled; Clinical Nurse Specialist Certification Exam Review.

Linda Lord, RN ACNP-BC, CNSC

Presently Linda serves as the Nurse Practitioner, Adult Nutrition Support Services, Clinical Associate and serves on multiple committees at the University of Rochester School of Nursing since 1991. Linda has been an industry consultant for multiple pharma and enteral nutrition companies, including Abbott Nutrition and Corpak MedSystems. She is and has been a reviewer for multiple pier reviewed journals; including nutrition support and critical care journals, in addition to being the editor of AACN (American Association of Critical Care Nursing) Clinical Issues Advanced Practice in Acute and Critical Care – Nutrition and Section Editor of ASPEN Adult Nutrition Support Core Curriculum 3rd Ed, including Enteral Medication Administration Consensus Conference. Linda is a member of multiple nursing associations, ASPEN and the upstate NY ASPEN Chapter. She has multiple publications, presentations, has provided guest lectures/presentations, webinars, and research including clinical nutrition topics. Due to Linda’s impressive accomplishments, like our other CAB nurses, she has received multiple awards, including Distinguished Nutrition Support Nurse Service Award by ASPEN.

Matthew Bechtold MD, FACG, FASGE, AGAF, FASPEN

Matthew is a gastroenterologist who specializes in general gastroenterology and nutrition. He has been part of the University of Missouri since 1997 where he completed his medical school, residency, and gastroenterology fellowship. In 2013, he completed a nutrition fellowship with the Nestle Nutrition Institute. By 2018, he was accelerated to the level of Professor of Medicine, being one of the quickest promotions in Mizzou history. He is an accomplished researcher in the fields of outcomes research, nutrition, and bowel preparation before colonoscopy with 127 publications and 5 book chapters. His research, which is referenced in many guidelines, has changed worldwide practice in over 10 areas of gastroenterology and nutrition. He has received the prestigious fellow recognition from every American gastroenterological society and the American Society of Parenteral and Enteral Nutrition. He is very active at the national level, acting as a recurrent speaker at major conferences, moderator for expert panels, and chair of numerous national committees.

Marianne Aloupis, MS, RD, CNSC, LDN

Marianne is the Director of Nutrition Support with over 20 years of experience in nutrition support, with a primary focus on surgical critical care with extensive experience managing complex nutrition support patients, at the Hospital of the University of Pennsylvania in Philadelphia, PA. Throughout her career, she has worked on multiple performance improvement projects and written practice guidelines related to EN and PN. Most recently, she led the successful hospital-wide transition to ENFit due to her frequent collaboration with the Nursing Practice Committee and the Pharmacy & Therapeutics Committee. She has had the opportunity to work on multiple committees within ASPEN including the Program Planning Committee and the CNSC Exam Committee.

Cynthia Reddick, RD CNS

21 years of experience with home nutrition support program with a focus on the home tube feeding market, complimented with a history of acute care nutrition support. 14 years of experience with the largest home enteral and infusion provider in the US. Established, recognized, and skilled live public and webinar CE presenter, including ENFit presentations. With multiple ASPEN publications and presentations, as well as an active clinician on GEDSA’S CAB.

David Barmann, PHARM. D, BCNS

ICU, COVID and Nutrition Support for 35 years at Memorial Health System in Hollywood, FL. ASPEN, including the Florida society, FSPEN, and American Society of Hospital Pharmacist (ASHP) member. Winner of multiple preceptor of the year at University of Florida and other universities, History of developing and educating clinicians on parenteral and enteral nutrition and working closely with appropriate sales reps to implement pharmacy products. David is also an adjunct professor at Nova Southeastern and FAMU and an author of JPEN article.

Gail Gewirtz MS, RDN

Gail, from the Greater Chicago Area, has been a Registered Dietitian Nutritionist since 1987, with a Master of Science Degree from the University of Florida. She is experienced with nutrition support, patient consultation, parenteral and enteral nutrition, medical sales, and marketing, as well as sales training. She has achieved many dietitian, sales and marketing awards in her medical, sales, and marketing career. In 2008, she became the President and Founder of an IL non profit 501 (c) 3, nutritionDay in the US (nutritionDayUS.org) to raise awareness of the prevalence of US healthcare malnutrition. Gail is also an Active Member of the Global Enteral Device Suppliers Association (GEDSA).