Dr. Litwin is a triple board-certified (General Pediatrics, Lifestyle Medicine, Obesity Medicine) pediatrician who grew up in Cookeville, Tennessee, where she attended Tennessee Tech University, earning her bachelor's in biochemistry. She received her medical degree from Lincoln Memorial University-DeBusk College of Osteopathic Medicine.

After she was commissioned as an active-duty officer in the United States Navy, she completed her pediatric residency at the Naval Medical Center Portsmouth in Virginia. She served as a general medical officer for the Medical Readiness Division in Norfolk, Virginia, which took her to Spain, Italy, France, Monaco, and Portugal. She had the privilege of caring for families as a general pediatrician at the Navy Medical Readiness and Training Command Camp Lejeune in North Carolina. She moved to Chattanooga, TN to be near family with her husband and three sons after the conclusion of her military obligation. Dr. Litwin remains committed to supporting Chattanooga families through evidence-based, holistic medical care with a focus on foundational wellness, balanced family dynamics, and resilience. Her hobbies include running, international cuisine, yoga, reading, training the family golden retriever, and attending broadway shows.

Annamarie Rodriguez has almost 30 years of experience in a vast array of settings surrounding CKD and ESKD. She owns Nutrition Directions, LLC providing dietitian/nutrition consulting services and works in the renal division of Pentec Health, Inc. providing parenteral nutrition support to dialysis patients.

She is dedicated to serving the community to advocate for health equity to advance preventative measures to decrease the incidence and progression of kidney disease. She has a Master’s in Health and Wellness Management and is a Certified Lifestyle Medicine Professional. Annamarie is an avid volunteer with dietetic practice groups, her Affiliate, and the Academy. Outside her profession, she loves gardening, cooking, nature, travel, and her dogs (since her houseful of kids are grown!). She thrives on staying physically and mentally busy, loves hiking in state and national parks, and canoeing!

Colleen Sloan is a Physician Assistant and Registered Dietitian with over a decade of experience bridging the worlds of medicine and nutrition. Colleen has worked in both hospital and outpatient settings, specializing in diabetes education and weight management, and currently provides pediatric care for patients from infancy through young adulthood. She received her Bachelor of Science in Dietetics and Nutrition from Florida International University and her Master of Medical Science from Nova Southeastern University.


Passionate about addressing the nutrition gap in healthcare, Colleen launched the Exam Room Nutrition podcast to empower clinicians with the tools and confidence to have compassionate, evidence-based conversations about nutrition. Outside of her professional work, Colleen enjoys a good cup of coffee, spending time with her two dogs, and reading books with her 14-year-old daughter.

Ernestine Trujillo is a licensed and registered dietitian in practice since 2001. As a native New Mexican, she completed both her bachelor and master of science degrees at the University of New Mexico. She has also earned her Certificate of Training in Adult Weight Management with the Academy of Nutrition & Dietetics.

Over the years, Ernestine has cared for patients with varying degrees of nutritional needs in intensive care, cardiac care, long-term care, outpatient counseling, and home health, including hospice and transitioning patients on and off of enteral and parenteral feedings. Through these experiences she has developed a passion for oncology nutrition and continues to be serving as the Senior Clinical Nutritionist at the University of New Mexico Cancer Research & Treatment Center for the past ten years. Ernestine strives to leave no stone unturned in attempting to help her patients stay nourished throughout their cancer journey. As a busy mother of two, Ernestine enjoys frequent adventures with her children including gardening, hiking and camping.

Jessica Griffin is a credentialed registered dietitian with experience in medical nutrition therapy in both inpatient and outpatient clinical settings for over ten years. She currently works at Penn Medicine's gastroenterology and hepatology clinic seeing patients in the areas of gastrointestinal disorders, weight management, malnutrition, and enteral nutrition support.

She is a passionate healthcare educator with a master's degree in nutrition education. Enhancing patient's nutrition-related knowledge to allow autonomy and positive change into their lives is her most rewarding goal in clinic. Her educational platform extends beyond the patient base and often reaches healthcare trainees or professionals including dietetic interns, Penn Medicine fellows, and gastroenterologists. Providing well-rounded multidisciplinary care is extremely important to her, as well as making collaborations throughout the health and wellness industry. Outside of her dietetics role, Jessica is a wife and mother who enjoys yoga, the beach, and experimenting with recipes in the kitchen.

Joseph Zucchi is a board-certified Physician Assistant and Personal Trainer who serves as the Clinical Supervisor of Transition Medical Weight Loss in Salem, New Hampshire. With over a decade of experience in obesity medicine, Joseph leads a multidisciplinary team dedicated to helping patients achieve sustainable weight loss and improved health. He has worked with over 1,800 patients to collectively lose more than 40,000 pounds. Joseph integrates fitness, nutrition, and medical interventions to provide comprehensive, patient-centered care.

Joseph holds a Master’s in Physician Assistant Studies from MCPHS University and has a strong foundation in clinical research, having coordinated nutrition and exercise trials at Tufts University. His work has been recognized through multiple accolades, including leading Transition Medical Weight Loss to win awards for best weight loss center in NH. He has also written articles and has shared his expertise on obesity medicine and weight-loss treatments in outlets like the Wall Street Journal, MedPage Today, and Doximity. Joseph is passionate about evidence-based approaches to health and wellness and transforming lives through compassionate care. Outside of work, Joe loves spending time with his wife and daughter as well as playing tennis and weightlifting.

Kari Sharp is a registered dietitian nutritionist who has built a successful private practice in pediatrics since 2018. She is widely recognized as a leading expert on nutrition for neurodiverse children.

Kari’s unique expertise led to her becoming a consultant for several specialty companies and educational institutions. One example is Cognitive Leap Solutions, where she developed the evidence-based nutrition therapy section of their app designed to improve the well-being of children with ADHD. In addition, Kari invented “The Green Plate Method,” a creative strategy for nutritional dietary changes. Working with interns as a preceptor for Morrison Healthcare, sparked Kari’s invention of RD Boot Camp, a multidimensional program to help prepare students for the required national certification exam. It incorporates interactive learning materials, one-on-one tutoring, and class review sessions. 

When not working as a dietitian or innovating on RD Boot Camp, Kari can be found running marathons, playing tennis, and hiking in the woods with her beagle.

Katy MacQueen is a registered dietitian with 12 years of experience in outpatient counseling. She completed her bachelor's degree in nutrition at the University of Rhode Island and her master's degree at Tufts University.

She is recognized as a Certified Diabetes Outpatient Educator, and a Cardiovascular Disease Outpatient Educator in the State of Rhode Island. For the past seven years, she has been working in the field of Cardiovascular and Pulmonary Rehabilitation, as well as diabetes management and weight management. She currently works at Miriam Hospital, Center for Cardiac, Pulmonary & Vascular Fitness. Katy lives in Central Massachusetts with her husband and two little girls.

Mallory Hamilton is a registered dietitian who has worked in the clinical setting for seven years. She received a bachelor of science in nutrition and dietetics from the University of North Florida and currently works at UF Health in Jacksonville, Florida.

The inpatient clinical world of nutrition provides the opportunity for her to learn something new every day, which she enjoys. She sees a wide range of medical conditions with an emphasis in oncology, gastrointestinal disorders, critical care and diagnosing malnutrition. She strives for growth in her field so that she may provide the best care and nutrition to those who need it most. Outside of the field of dietetics, Mallory favors the outdoors and being in the mountains as much as possible. She also enjoys the challenges of baking sourdough bread and going on adventures with her husband and two Dachshunds, Mousse and Maverick.

Moushumi Mukherjee is a registered dietitian nutritionist with more than 25 years of experience in clinical and community settings. She has a master's degree in human nutrition from Michigan State University. She is the owner of DietitianMoushumi, LLC where she specializes in helping people reach their weight loss goals.

She believes in helping her clients make sustainable lifelong changes in their diet and lifestyle. Moushumi also works as a consultant for long term care homes, group homes, hospice, and assisted living facilities in Michigan where she sees trauma victims and patients with brain and spinal cord injuries. In the last few years, she's had more requests to speak at conferences and support groups and is increasingly quoted in lifestyle magazines. She enjoys volunteering and mentoring Michigan State University students at the undergraduate and graduate levels. Outside of being a dietitian, Moushumi is a wife and mother, and enjoys traveling and making culturally diverse cuisines.

Rachel Allio has been a practicing registered dietitian nutritionist for 14 years. Rachel completed both her master of science and dietetic internship at West Virginia University in 2010. She has worked in clinical nutrition, outpatient nutrition, long-term care, and employee wellness.

Rachel found her preferred specialty in 2012 when she started working with patients pursuing Bariatric and Metabolic Surgery. She has been at West Virginia University Medicine since 2017 helping both pre- and post-operative bariatric surgery patients realize their health and functional goals with nutrition. In her spare time, she enjoys CrossFit, tie-dying, drinking coffee and being a sports-mom.

Simona Hradil is a registered dietitian with a master's in nutrition and dietetics from California State University at Northridge, where she developed the first-ever sports nutrition program and fueling station for the Matador's Athletics Program working with over 400 division one athletes and coaches.

Simona also consults for the Marilyn Magara Center for Food Science, Nutrition, and Dietetics as the project manager of the Body Composition Assessment Program using the BOD POD and the InBody. Additionally, Simona serves as an outpatient dietitian for Kaiser Permanente, Woodland Hills. Through her private practice, FXP Athlete, she has privately consulted elite taekwondo athletes and since then, has evolved to assist other top athletes from various sports. Her successful athletic career, (an 11-time U.S. national taekwondo, a five-time Czech Republic national taekwondo team member, and an alternate for the 2012 London Olympic Games), and formal background in nutrition and dietetics have given her the edge to coach athletes on how to maximize their performance through nutrition. She works with athletes to target individual needs and specifications, so they are consistent in achieving high-level performance. Simona loves spending time with her five-year-old twins and French Bulldog named Dexter who all love camping, hiking, and the beach!