Orgain Healthcare Ambassador Advisory Panel

Meet the healthcare professionals serving on the panel from a variety of specialties, working in patient and client facing settings. These practitioners provide consulting support, insights, and recommendations from their respective areas of expertise with the Orgain Healthcare team.

Picture of Aileen Litwin
Aileen Litwin
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.
Read More
Picture of Aileen Litwin
Aileen Litwin

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.

Picture of Ernestine Trujillo
Ernestine Trujillo
Ernestine Trujillo, MS, RD, LD 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.
Read More
Picture of Ernestine Trujillo
Ernestine Trujillo

Ernestine Trujillo, MS, RD, LD 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.

Picture of Jessica Griffin
Jessica Griffin
Jessica Griffin, MS, RD, LDN 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.
Read More
Picture of Jessica Griffin
Jessica Griffin

Jessica Griffin, MS, RD, LDN 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.

Picture of Kari Sharp
Kari Sharp
Kari Sharp, MS, RDN, CLT is the founder of the private practice Sharp Nutrition and the innovative RD Boot Camp (RD Exam Test Prep), a consultant for Cognitive Leap Solutions and Snack Attics Organic Dehydrated Fruits, and a preceptor for Morrison Healthcare dietetic interns.
Read More
Picture of Kari Sharp
Kari Sharp

Kari Sharp, MS, RDN, CLT is the founder of the private practice Sharp Nutrition and the innovative RD Boot Camp (RD Exam Test Prep), a consultant for Cognitive Leap Solutions and Snack Attics Organic Dehydrated Fruits, and a preceptor for Morrison Healthcare dietetic interns.

She also has a background in culinary arts, nutrition program coordination, nutrition education, and as a health and wellness activist. She began her private practice in 2018 and is widely recognized as a leading expert on nutrition for children who are neurodiverse. In her role as a consultant for Cognitive Leap Solutions, Kari developed the evidence-based nutrition therapy section of a Prescription Digital Therapeutics app designed to improve the well-being of children with ADHD. In addition, she conducted nutrition education seminars and created educational videos on medical nutrition therapy for children with ADHD. When she is not working you can find her out running, hiking with her dog, or enjoying time with family.

Picture of Katy MacQueen
Katy MacQueen

Katy MacQueen, MS, RD, CDOE, CVDOE 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.


Read More
Picture of Katy MacQueen
Katy MacQueen

Katy MacQueen, MS, RD, CDOE, CVDOE 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.

Picture of Mallory Hamilton
Mallory Hamilton
Mallory Hamilton, RD 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.
Read More
Picture of Mallory Hamilton
Mallory Hamilton

Mallory Hamilton, RD 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.

Picture of Moushumi Mukherjee
Moushumi Mukherjee
Moushumi Mukherjee, MS, RDN 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.
Read More
Picture of Moushumi Mukherjee
Moushumi Mukherjee

Moushumi Mukherjee, MS, RDN 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.

Picture of Rachel Allio
Rachel Allio
Rachel Allio, MS, RD, LDN 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.
Read More
Picture of Rachel Allio
Rachel Allio

Rachel Allio, MS, RD, LDN 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.

Picture of Sharon Sergi
Sharon Sergi
Sharon Sergi, RD has over 25 years of experience educating clients with diabetes and kidney disease. Sharon has been working as a Registered Dietitian for Dialysis Clinic, Inc. for over 22 years and has been a resource in educating new dietitians and clinicians in the field.
Read More
Picture of Sharon Sergi
Sharon Sergi

Sharon Sergi, RD has over 25 years of experience educating clients with diabetes and kidney disease. Sharon has been working as a Registered Dietitian for Dialysis Clinic, Inc. for over 22 years and has been a resource in educating new dietitians and clinicians in the field.

Additionally, she is a Certified Diabetes Care and Education Specialist with experience educating patients one-on-one and in a group setting. Sharon is a mother of two young adults, who are also fitness advocates like her. Sharon enjoys weightlifting, tennis, and bike riding and believes good nutrition and exercise are critical to disease prevention as well as management of chronic disease.

Picture of Simona Hradil
Simona Hradil
Simona Hradil, MS, RD 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.
Read More
Picture of Simona Hradil
Simona Hradil

Simona Hradil, MS, RD 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!

"I have a 4-year-old patient who is a very picky eater and was struggling to gain weight. I had tried a variety of other nutritional shakes and toddler formulas, but she refused to drink them. I gave her mom a sample of Orgain and we were shocked that she drank the entire bottle! We were even more shocked when she finished and then asked for more! Orgain is the only thing she will currently drink. She asks for it by name. Thanks to Orgain her weight has increased from below the 1st to above the 5th percentile on the growth chart. Her favorite flavor is strawberry."
Julia
Pediatrician
"My colleagues and I are very happy to be able to tell our patients about Orgain products. It’s wonderful to have such a high quality product to recommend—one I use myself! I’m very happy you have such great vegan products!"
Clarisa
Oncology Dietitian
"You are to be commended on the quality and variety of information found in your webinars. You have done such an excellent job. I am at the end of my current 5-year review period for my RDN credential and have been listening/viewing the webinars recently and they are so practical and informative. Having taught in a public health program, I am always looking for simple ways to interpret nutrition research so it can be used by the public. I find something that I can promote to the public in these webinars, as well use in my personal life. Keep up the good work - I am very pleased with the professionalism provided by Orgain."
Wendy
Professor Emerita & Dietitian
"I have loved adding Orgain to the supplements I to offer the patients. Multiple patients have provided positive feedback on taste and tolerance. I have also received positive feedback about the cleaner ingredients and plant-based options."
Kathryn
Oncology Dietitian
"I just have to say that I love being an ambassador and having all these amazing resources. The webinars are immensely fascinating! I have truly learned so much from just the 5 I've watched recently. I can honestly say I've been implementing a lot of the information I've learned into my outpatient appointments. That, along with the Good Clean Nutrition Podcast, have been incredibly valuable. I've even recommended a few of the episodes of the podcast to my patients!"
Callie
Clinical Dietitian
"I have been getting a lot of positive feedback from patients who try Orgain shakes, and I have stopped getting samples from Glucerna, Ensure and others because I think this is the best product to recommend to my patients."
Angela
Diabetes & Weight Loss Dietitian
"I like that the product is available to our patients over the counter and even online. I've gotten back good feedback from a Crohn's patient who previously refused to take any supplements that we've offered."
Audra
Sports Medicine Dietitian
"I have had great experiences with the portal. Simple, easy, and quick. I love Orgain products and having access to them to offer to my patients is great."
Vivianne
Oncology Dietitian
"Orgain hits all the elements important to my patients, such as affordability and taste, and also gives me confidence as a Gastroenterologist that I’m providing patients a clean, hypo-allergenic product that is well-tolerated. I use the nutritional shakes on those who need supplemental calories, even via feeding tubes, and the protein shakes for my post-bariatric patients on modified diets as well as those on weight loss programs. Orgain is the go-to in my GI practice."
Seper
Gastroenterologist
"Working with the oncology population, I know just how detrimental it can be to not consume adequate calories and protein. Unfortunately, many of my patients and clients are at risk of becoming malnourished because their caloric demand is increased. Orgain allows these individuals the chance to add more nutrition in a clean, wholesome, and delicious way! I feel confident using Orgain as a tool in my toolbox to help optimize my patient and clients’ nutritional status. Orgain wants to help individuals as much as I do – and I really appreciate that!"
Rayna
Oncology Dietitian
"I think the direct-to-patient sampling program is one of the best, most convenient ways for patients to receive samples delivered to their homes during the pandemic that I've seen so far. The option for patients to also see the tracking information is an added bonus! My patients have been appreciative they don't have to go out shopping during the pandemic, & that they have the option to still try before buying."
Elizabeth
Oncology Dietitian
"I’m a Registered Dietitian and would first like to start by sharing how much your Orgain product has helped my medical condition, Crohn’s Disease. I was on the Specific Carbohydrate diet for almost 2 years in clinical and biochemical remission, however I had a flare up and was unable to get control until I started Exclusive Enteral Nutrition (EEN), by mouth, with your Orgain All-in-One Nutrition Shakes, for one month straight. I went into clinical remission for about 6 months, then figured out if I do Partial Enteral Nutrition (drinking 2 shakes for breakfast everyday) I’m back into remission. Your product has literally been my medicine!"
Sarah
Clinical Dietitian
"I've never found a plant based protein powder specifically that is so loved by so many athletes, and I'd love to be able to recommend it to other people."
Diane
Sports Dietitian
"I have been using the Orgain beverages for over 2 years in my GI practice. These products are the perfect fit for my GI compromised patients as well as anyone looking for a high quality, clean protein, calorie dense liquid beverage. The flavors are wonderful and these products are tolerated very well by all my clients. I have used the high protein beverage for my diabetic clients, as well as my athletes - these are the perfect fit due to the low sugar content! I highly recommend the Orgain line of nutritional products to both the compromised and healthy individual."
Lori
Gastroenterolgy Dietitian
"I really like the Orgain ambassador program as it makes it very easy to reorder samples, coupons, etc. I also like that you offer webinars and educational info as well. Really, I think your program is very well organized compared to many of the other supplement companies."
Liz
Oncology Dietitian
"I am very much enjoying being an ambassador. Ordering sample kits is a breeze, and my patients appreciate that they get to try a sample of your product before going out and buying a box for themselves."
Nicole
Sports Medicine Dietitian
"Being a registered dietitian, I feel confident promoting your product. I feel good telling my allergy clients the standards you uphold with manufacturing. It is difficult to find nut free protein shakes that are healthy. Your products are clean and non modified."
Christine
Clinical Dietitian
"I wanted to write you because I want you to know that Orgain really has great products. I have type 1 diabetes, which has been my primary motivator to become a dietitian and a diabetes educator and I have always had to be careful with processed foods, with an emphasis on protein powders and shakes. However, though I nearly always have a poor blood sugar reaction to protein products, this has not been the case with Orgain products! This just goes to show the quality of Orgain products. So thank you. I had samples sent to my house at first as a test run to see how it affected my diabetes, but Orgain has been wonderful and wonderful to work with the Ambassador program. I couldn't be happier. I now plan to work with the Endo and PA to start giving out Orgain samples and coupons to all the patients."
Ariel
Certified Diabetes Educator
"I am so happy I found Orgain! I have been looking for clean, plant-based protein and bars, and Orgain is perfect. My patients are constantly asking me what protein to use for shakes, and I will be happy to recommend Orgain!"
Sara
Oncology Dietitian
"I have been enjoying talking to patients about the product as an alternative for nutritional support. I've had several patients tell me this is one of the only nutritional drinks they are able to tolerate with gastroparesis (our patient population). It is nice to have samples to provide to patients if they need extra nutritional intake (or better options than Ensure, which many of our patients cannot tolerate). We appreciate the program and the opportunity to provide patients with samples."
Natalie
Gastroenterology Nurse
"My first choice for patients that need an oral supplement is almost always Orgain. As an RD I am much more comfortable recommending Orgain over conventional brands like Ensure because it’s certified organic, has a much cleaner and less controversial ingredient list and it’s lower in sugar. Yet most importantly, my cancer patients don’t complain about it being too sweet or having a chemical taste so they are much more likely to drink it and get the important nutrition they need during treatment. It’s a premium product yet doesn’t come with the premium price tag that puts it out of reach for patients. I also love that its so widely available now at retailers and can be purchased online too like on Amazon at a really good price."
Janet
Oncology Dietitian
"As an oncology dietitian, many of my patients and families have expressed a desire to use more natural nutrition supplements during their treatments. Many patients are interested in reducing their overall intake of added sugars and processed ingredients. I recommend Orgain supplements to many of my patients given the use of real fruits and vegetables, non-GMO ingredients, and lower amounts of sugar compared to conventional brands. Including Orgain products on our formulary has been a great option for patients and families who are looking for nutrition supplement options outside of the conventional brands."
Lindsey
Oncology Dietitian
"In pediatrics, many of the parents and teenagers I counsel on nutrition complain about artificial ingredients and sugar in the standard pediatric drinks like PediaSure. We recently started to recommend Orgain and us (the RDs), the parents and most importantly the kids love it! It tastes like a real milkshake but not too sweet and no vitamin after taste or tongue coating like traditional products! The monkey graphic is a big selling point over some of the other drinks in my mind. Kids call it the “Monkey Milk” and it puts a smile on their face when I bring it in for them to try! Thank you Orgain for making such a wonderful product!"
Monika
Pediatric Dietitan
"I recommend Orgain products to my patients because they have such a large variety of high quality options. The products are well balanced and responsibly sourced. I love having both plant and grass-fed whey based ready-to-drink and powder options that are not only good for them but also taste great."
Carla
Bariatric Dietitian
"Being an RD in gastroenterology, I need to view products very closely when I recommend them to patients. Orgain is a great option for patients looking for an organic, high quality protein shake that does not cause GI distress."
Laura
Gastroenterolgy Dietitian
"I have Chrohn's Disease, a host of food allergies and problems just getting in enough nutrition. I have little to no appetite most of the time, and have to eat very small portions. I struggle to get enough calories and vitamins in. Orgain's vegan shakes and protein bars are a literal life saver. I often have no appetite, and can keep either a shake or bar nearby and eat very slowly on it--which gets the calories in, but I don't feel rushed to eat a whole meal. And the ingredients are completely safe for me to eat--I don't have to worry about if what I'm putting in my body is going to make me sicker. Oh--and they taste great as well which makes the task of eating less stressful and I'm starting to enjoy it again. Thank you, Orgain for what you do!"
Courtney
Orgain Customer
Have Questions?
A member of the Orgain healthcare team can help.
Picture of Keith Hine, MS, RD
Keith Hine, MS, RD
Vice President of Healthcare, Sports and Professional Education
Picture of Lauren Bissonnette, MS, RD, LDN
Lauren Bissonnette, MS, RD, LDN
Ambassador Support & Education Manager
Picture of Acacia Wright, RD, CD
Acacia Wright, RD, CD
Nutrition Communications & Support Sr. Manager