Gastrointestinal (GI) Nutritionists and Dietitians in Phoenix, AZ
We’re a team of GI Dietitians who’ve specialized in digestive issues since 2012.
You’ve tried probiotics, eliminated dozens of foods, and sat through appointment after appointment—yet you still don’t feel well. Maybe you’ve been diagnosed with IBS, SIBO, or GERD… or told everything looks “normal” and sent on your way. You’re tired of obsessing over what to eat, chasing internet remedies, and not knowing who to trust. You just want to enjoy meals without pain, know what’s really going on in your body, and get your life back. Our clients are tired of short-term fixes and ready for real answers, deeper healing, and lasting relief.
We’re a team of GI Dietitians who’ve specialized in digestive issues since 2012.
You’ve tried probiotics, eliminated dozens of foods, and sat through appointment after appointment—yet you still don’t feel well. Maybe you’ve been diagnosed with IBS, SIBO, or GERD… or told everything looks “normal” and sent on your way. You’re tired of obsessing over what to eat, chasing internet remedies, and not knowing who to trust. You just want to enjoy meals without pain, know what’s really going on in your body, and get your life back. Our clients are tired of short-term fixes and ready for real answers, deeper healing, and lasting relief.
I provide contracted nutrition therapy and cycle menu services for group homes, behavioral health centers, and care facilities. I also offer personal chef services with medically tailored meals prepared in a licensed commercial kitchen. Clients managing weight loss, diabetes, PCOS, or chronic conditions receive macro-balanced support from a dietitian-chef. Tailored Bites Nutrition Concierge blends clinical care with culinary support to help you nourish, heal, and thrive.
I provide contracted nutrition therapy and cycle menu services for group homes, behavioral health centers, and care facilities. I also offer personal chef services with medically tailored meals prepared in a licensed commercial kitchen. Clients managing weight loss, diabetes, PCOS, or chronic conditions receive macro-balanced support from a dietitian-chef. Tailored Bites Nutrition Concierge blends clinical care with culinary support to help you nourish, heal, and thrive.
Danielle’s ideal client is a bariatric patient struggling to meet daily protein needs. Common concerns include low energy, confusion about which foods are appropriate, and uncertainty around high-protein sources. Clients often want guidance on protein goals and support with staying consistent with bariatric multivitamins.
Danielle’s ideal client is a bariatric patient struggling to meet daily protein needs. Common concerns include low energy, confusion about which foods are appropriate, and uncertainty around high-protein sources. Clients often want guidance on protein goals and support with staying consistent with bariatric multivitamins.
We specialize in Weight Management, Diabetes & Prediabetes, Cardiovascular Disease, Kidney Disease, Gastrointestinal Disorders, Enteral/PN Nutrition (Feeding Tubes), Eating Disorders, Liver Disease, Nutrition in Cancer, Wound Management, Bariatric Surgery, Thyroid Disease, General Health & Wellness.
Registered Dietitians specializing in a variety of medical and health conditions for all ages.
Meet The Owner/Director: Thomas J Hellyer is a Registered Dietitian in Las Vegas, Nevada. He graduated with honors from Joan C. Edwards School Of Medicine, Marshall University. Having more than 10 years of diverse experience with a variety of medical conditions, Thomas affiliates with several hospitals and cooperates with many other doctors and specialists.
We specialize in Weight Management, Diabetes & Prediabetes, Cardiovascular Disease, Kidney Disease, Gastrointestinal Disorders, Enteral/PN Nutrition (Feeding Tubes), Eating Disorders, Liver Disease, Nutrition in Cancer, Wound Management, Bariatric Surgery, Thyroid Disease, General Health & Wellness.
Registered Dietitians specializing in a variety of medical and health conditions for all ages.
Meet The Owner/Director: Thomas J Hellyer is a Registered Dietitian in Las Vegas, Nevada. He graduated with honors from Joan C. Edwards School Of Medicine, Marshall University. Having more than 10 years of diverse experience with a variety of medical conditions, Thomas affiliates with several hospitals and cooperates with many other doctors and specialists.
Struggling with digestive issues like pain, bloating, constipation or diarrhea that make you feel miserable?
It all comes down to discovering the root cause of a client's symptoms. As a skilled "nutritional detective", I provide my clients with a data driven, personalized, step-by-step plan to address blocking factors while rebalancing and strengthening the body. I specialize in autoimmune conditions, gut health, food sensitivities, and customized meal plans.
Struggling with digestive issues like pain, bloating, constipation or diarrhea that make you feel miserable?
It all comes down to discovering the root cause of a client's symptoms. As a skilled "nutritional detective", I provide my clients with a data driven, personalized, step-by-step plan to address blocking factors while rebalancing and strengthening the body. I specialize in autoimmune conditions, gut health, food sensitivities, and customized meal plans.
Children are our future! For them to succeed, they have to first be healthy. As a Registered Dietitian/Nutritionist, I have specialized in pediatric nutrition for over 30 years! I work with children and their families to learn how to make healthy food choices and keep their bodies healthy through nutrition and activity. I work with adolescents to help them develop a positive self image and confidence in making healthy food choices during this period of change. I work with young women/future mothers. Nutrition is the foundation of a healthy life - educating children & families about nutrition is my passion.
Children are our future! For them to succeed, they have to first be healthy. As a Registered Dietitian/Nutritionist, I have specialized in pediatric nutrition for over 30 years! I work with children and their families to learn how to make healthy food choices and keep their bodies healthy through nutrition and activity. I work with adolescents to help them develop a positive self image and confidence in making healthy food choices during this period of change. I work with young women/future mothers. Nutrition is the foundation of a healthy life - educating children & families about nutrition is my passion.
We specialize in eating disorders and other medical complications such as digestive issues, gastroparesis, POTS, EDS, MCAS.
Kelli Jo has worked as a dietitian helping those who suffer from eating disorders for the last 9 years at all levels of care. Kelli Jo has worked with extensive medical complications, including gastroparesis, bariatric surgeries, allergies, enteral feedings, autoimmune disorders, diabetes, EDS, SMA, POTS, Kelli Jo has also worked with individuals who struggle with co-occurring BPD, DID, OCD, substance abuse, and other addictions. She works with individuals with significant trauma and understands how this impacts one's relationship with food and body.
We specialize in eating disorders and other medical complications such as digestive issues, gastroparesis, POTS, EDS, MCAS.
Kelli Jo has worked as a dietitian helping those who suffer from eating disorders for the last 9 years at all levels of care. Kelli Jo has worked with extensive medical complications, including gastroparesis, bariatric surgeries, allergies, enteral feedings, autoimmune disorders, diabetes, EDS, SMA, POTS, Kelli Jo has also worked with individuals who struggle with co-occurring BPD, DID, OCD, substance abuse, and other addictions. She works with individuals with significant trauma and understands how this impacts one's relationship with food and body.
Are you fed-up with the rollercoaster of dieting? Overwhelmed by conflicting diet advice? Are thoughts about food and body claiming too much of your headspace? How would it feel to NOT spend so much time and effort analyzing and second guessing your food choices? You are not alone and you don't have to figure this all out by yourself! Many of us are taught messages about food and health as far back as we can remember, and all of these “rules” can feel overwhelming. I'll help you sort through the noise and find ways to nourish your body in a way that makes sense for you and your goals.
Are you fed-up with the rollercoaster of dieting? Overwhelmed by conflicting diet advice? Are thoughts about food and body claiming too much of your headspace? How would it feel to NOT spend so much time and effort analyzing and second guessing your food choices? You are not alone and you don't have to figure this all out by yourself! Many of us are taught messages about food and health as far back as we can remember, and all of these “rules” can feel overwhelming. I'll help you sort through the noise and find ways to nourish your body in a way that makes sense for you and your goals.
Specialties include sports nutrition; prediabetes and type 2 diabetes (non-insulin dependent); IBS and digestive health (Low FODMAP); food allergies/intolerances; heart health; mindful/intuitive and plant-based eating; weight management (bariatrics, GLP-1s); fatty liver; and women’s health.
Welcome! I’m Adam Walz, a Registered and Licensed Dietitian dedicated to helping people achieve lasting wellness and improved health. I’ve worked with professional and Division I athletes, pregnant and postpartum women, and clients of all ages—from children and adolescents to adults. I hold a Certificate of Training in Adult and Pediatric Obesity (Commission on Dietetic Registration) and I’m certified in the Low Fodmap Diet for IBS management. I provide personalized, evidence-based support tailored to your needs.
Specialties include sports nutrition; prediabetes and type 2 diabetes (non-insulin dependent); IBS and digestive health (Low FODMAP); food allergies/intolerances; heart health; mindful/intuitive and plant-based eating; weight management (bariatrics, GLP-1s); fatty liver; and women’s health.
Welcome! I’m Adam Walz, a Registered and Licensed Dietitian dedicated to helping people achieve lasting wellness and improved health. I’ve worked with professional and Division I athletes, pregnant and postpartum women, and clients of all ages—from children and adolescents to adults. I hold a Certificate of Training in Adult and Pediatric Obesity (Commission on Dietetic Registration) and I’m certified in the Low Fodmap Diet for IBS management. I provide personalized, evidence-based support tailored to your needs.
Manal Qadeer, MS, RD, LDN is a trauma-informed registered dietitian who helps clients heal their relationship with food and their bodies through a compassionate, collaborative approach. With over six years of experience in both nutrition and mental health settings, she specializes in supporting individuals navigating anxiety, trauma, disordered eating, and the emotional side of nourishment.
Manal’s philosophy is grounded in Health at Every Size, All Foods Fit, and the belief that every body is a good body. She creates a safe, judgment-free space where you can feel truly heard, understood, and empowered to move at your own pace tow
Manal Qadeer, MS, RD, LDN is a trauma-informed registered dietitian who helps clients heal their relationship with food and their bodies through a compassionate, collaborative approach. With over six years of experience in both nutrition and mental health settings, she specializes in supporting individuals navigating anxiety, trauma, disordered eating, and the emotional side of nourishment.
Manal’s philosophy is grounded in Health at Every Size, All Foods Fit, and the belief that every body is a good body. She creates a safe, judgment-free space where you can feel truly heard, understood, and empowered to move at your own pace tow
My name is Heather M. Duquette-Wolf and I am the owner of HMD Nutrition. I have been in practice since 1999. I started out in medical nutrition therapy (diabetes, high blood pressure, high cholesterol...) and have expanded my areas of expertise to intestinal disorders, inflammatory disease and exercise nutrition. I have the utmost confidence that with my style of education and your motivation that we can eliminate most of your health issues, not just manage your weight! You will not be on a diet or feel deprived, I will teach you how to understand food and how it reacts in YOUR body.
My name is Heather M. Duquette-Wolf and I am the owner of HMD Nutrition. I have been in practice since 1999. I started out in medical nutrition therapy (diabetes, high blood pressure, high cholesterol...) and have expanded my areas of expertise to intestinal disorders, inflammatory disease and exercise nutrition. I have the utmost confidence that with my style of education and your motivation that we can eliminate most of your health issues, not just manage your weight! You will not be on a diet or feel deprived, I will teach you how to understand food and how it reacts in YOUR body.
I’m best suited for people seeking flexible, realistic support for cancer prevention or survivorship, chronic conditions (like CKD, diabetes, GI disorders), eating disorders, or women’s health and hormone transitions—who want sustainable change and a more supportive relationship with food.
I offer integrative, functional nutrition care grounded in Health at Every Size (HAES). Our work will be collaborative, compassionate, and evidence-based, focused on identifying root contributors and creating achievable plans that support health and quality of life across all stages.
I’m best suited for people seeking flexible, realistic support for cancer prevention or survivorship, chronic conditions (like CKD, diabetes, GI disorders), eating disorders, or women’s health and hormone transitions—who want sustainable change and a more supportive relationship with food.
I offer integrative, functional nutrition care grounded in Health at Every Size (HAES). Our work will be collaborative, compassionate, and evidence-based, focused on identifying root contributors and creating achievable plans that support health and quality of life across all stages.
Would you like help working on your relationship with food and your relationship with your body? There are so many confusing nutrition messages out there and no single plan works for every person. If you're looking for a dietitian with varied experience and a nonjudgemental approach, I would love to talk with you. With a whole-person approach, I meet people where they're at and help them set reasonable, attainable wellness goals. I use a non-diet, trauma-informed approach with HAES (Health at Every Size) alignment and Intuitive Eating at the forefront.
Would you like help working on your relationship with food and your relationship with your body? There are so many confusing nutrition messages out there and no single plan works for every person. If you're looking for a dietitian with varied experience and a nonjudgemental approach, I would love to talk with you. With a whole-person approach, I meet people where they're at and help them set reasonable, attainable wellness goals. I use a non-diet, trauma-informed approach with HAES (Health at Every Size) alignment and Intuitive Eating at the forefront.
As a Registered Dietitian and Certified Diabetes Care and Education Specialist, my approach to metabolic coaching is a collaborative one. What we work together on is tailored to your preferences and existing support network.
This often looks like an introductory video call, thorough and personalized health education, and ongoing texting and email support between visits. I pride myself on forging real connections with clients to help empower them to amazing success stories.
As a Registered Dietitian and Certified Diabetes Care and Education Specialist, my approach to metabolic coaching is a collaborative one. What we work together on is tailored to your preferences and existing support network.
This often looks like an introductory video call, thorough and personalized health education, and ongoing texting and email support between visits. I pride myself on forging real connections with clients to help empower them to amazing success stories.
Are you struggling with anxiety around meals, guilt after eating, or physical issues like digestive problems or hormonal imbalances?
The dietitians you will meet at NourishRX are passionate about eating disorders, continued eating disorder recovery, disordered eating patterns, diet-culture trauma, ARFID, picky eating, binge and emotional eating. We strive to help clients work on improving their relationship with food and their bodies using a customized, therapeutic, non-diet approach.
Are you struggling with anxiety around meals, guilt after eating, or physical issues like digestive problems or hormonal imbalances?
The dietitians you will meet at NourishRX are passionate about eating disorders, continued eating disorder recovery, disordered eating patterns, diet-culture trauma, ARFID, picky eating, binge and emotional eating. We strive to help clients work on improving their relationship with food and their bodies using a customized, therapeutic, non-diet approach.
Uhling Consulting is a group of Registered Dietitians (RDs) that offer medical nutrition therapy/nutrition counseling. We offer a private setting for one-on-one nutrition counseling. Our RDs implement evidence-based practice, along with professional judgment, in order to achieve optimum care and positive nutrition and health outcomes.
Uhling Consulting is a group of Registered Dietitians (RDs) that offer medical nutrition therapy/nutrition counseling. We offer a private setting for one-on-one nutrition counseling. Our RDs implement evidence-based practice, along with professional judgment, in order to achieve optimum care and positive nutrition and health outcomes.
Our Registered Dietitian Nutritionists work with you individually to formulate a personalized, sustainable nutrition plan. There's a lot of contradictory information about what and how to eat and it can be overwhelming. We are the largest team of dietitian nutritionists in the area and have over 15 years of experience helping individuals reach their health goals realistically, sustainably and with compassion. We have a RDN for everyone - whether you are managing a condition such as diabetes or heart disease, weight issues, eating disorders, vegetarian, adolescents, sports nutrition and more.
Our Registered Dietitian Nutritionists work with you individually to formulate a personalized, sustainable nutrition plan. There's a lot of contradictory information about what and how to eat and it can be overwhelming. We are the largest team of dietitian nutritionists in the area and have over 15 years of experience helping individuals reach their health goals realistically, sustainably and with compassion. We have a RDN for everyone - whether you are managing a condition such as diabetes or heart disease, weight issues, eating disorders, vegetarian, adolescents, sports nutrition and more.
My ideal clients are individuals seeking a sustainable, whole-health approach to nutrition that supports strength, mobility, and overall wellness. They often feel frustrated by restrictive diets or advice that doesn’t fit their lifestyle and want realistic, personalized support. I use a functional nutrition approach rooted in evidence-based care and focused on building lasting habits. Together, we create practical strategies that build on what’s already working, helping clients feel stronger, more confident, and supported in their everyday lives.
My ideal clients are individuals seeking a sustainable, whole-health approach to nutrition that supports strength, mobility, and overall wellness. They often feel frustrated by restrictive diets or advice that doesn’t fit their lifestyle and want realistic, personalized support. I use a functional nutrition approach rooted in evidence-based care and focused on building lasting habits. Together, we create practical strategies that build on what’s already working, helping clients feel stronger, more confident, and supported in their everyday lives.
My ideal clients are individuals seeking support for disordered eating, eating disorders, gastrointestinal health, diabetes, and overall wellness.
I specialize in disordered eating, eating disorders, GI health, diabetes, and overall wellness. I offer bilingual, evidence-based nutrition care focused on intuitive eating, sustainable habits, and individualized strategies that support realistic, long-term health improvements.
My ideal clients are individuals seeking support for disordered eating, eating disorders, gastrointestinal health, diabetes, and overall wellness.
I specialize in disordered eating, eating disorders, GI health, diabetes, and overall wellness. I offer bilingual, evidence-based nutrition care focused on intuitive eating, sustainable habits, and individualized strategies that support realistic, long-term health improvements.
Her specialties include eating disorders, emotional eating, intuitive eating, gastrointestinal disorders, food allergies and sensitivities, liver disease, high cholesterol, high triglycerides, hypertension, and prediabetes.
Krissy helps clients take the stress out of eating and find confidence and joy in nourishing themselves. She was inspired to become a Registered Dietitian after navigating her own health challenges involving food, and she brings an empathetic lens to supporting clients on their own health journeys. Krissy works with clients to explore and improve their relationship with food through an “all foods fit” approach, often incorporating intuitive and mindful eating practices.
Her specialties include eating disorders, emotional eating, intuitive eating, gastrointestinal disorders, food allergies and sensitivities, liver disease, high cholesterol, high triglycerides, hypertension, and prediabetes.
Krissy helps clients take the stress out of eating and find confidence and joy in nourishing themselves. She was inspired to become a Registered Dietitian after navigating her own health challenges involving food, and she brings an empathetic lens to supporting clients on their own health journeys. Krissy works with clients to explore and improve their relationship with food through an “all foods fit” approach, often incorporating intuitive and mindful eating practices.
Gastrointestinal (GI) Nutritionists and Dietitians
What is gut health?
Gut health refers to the overall functioning and well-being of the gastrointestinal (GI) system. Key to gut health is the gut microbiome, which is the collection of healthy bacteria living in the gut. These bacteria are essential for the digestion and breakdown of food, and their health significantly impacts digestion. Poor gut health can result in symptoms such as bloating, gas, diarrhea, constipation, and general abdominal discomfort, which may indicate imbalances or issues with the gut microbiome.
Can diet help with GI issues?
Diet plays a major role in gut health, and changes in diet can often reduce or eliminate some of the symptoms associated with gastrointestinal (GI) issues. Often, GI distress is due to food intolerances or sensitivities, such as gluten sensitivity or lactose intolerance. In these cases, eliminating the problematic foods from the diet can resolve the issue. GI problems can also stem from a combination of environmental or genetic factors, such as in the case of irritable bowel syndrome (IBS). Disruptions in the gut microbiome, such as those caused by taking antibiotics, can also lead to GI issues. In both scenarios, maintaining a balanced diet as much as possible with foods that support a healthy microbiome—such as fruits, vegetables, whole grains, and probiotic foods—can often significantly reduce symptoms and improve gut health.
What are the best foods for gut health?
Maintaining a balanced microbiome is essential for gut health, and this is best achieved through a varied diet rich in fruits, vegetables, and probiotic foods. Fruits and vegetables provide essential nutrients and fiber, which nourish the beneficial bacteria in the gut. Probiotic foods, which are those that contain live bacteria, are also great for gut health. Consuming probiotic foods and drinks, such as yogurt, kefir, kombucha, and tempeh, can help support the microbiome by contributing to the diversity of bacteria within the gut.
When should I see a dietitian for GI issues?
Many people can benefit from seeing a dietitian for GI issues. In general, most dietitians are knowledgeable about what foods support gut health and may help clients choose foods that support a healthy GI system, such as fruits and vegetables high in fiber or foods high in probiotics. Dietitians may be especially beneficial to clients with known gastrointestinal concerns, such as irritable bowel syndrome (IBS) or gastroesophageal reflux disease (GERD). For clients diagnosed with these or similar conditions, dietitians can help clients identify food triggers and develop a meal plan for the client that minimizes symptoms. Dietitians may also work with clients who are having gastrointestinal distress (such as bloating, gas, constipation, diarrhea, etc.) but are not aware of the cause of their symptoms. In such cases, dietitians may be able to help the client identify the cause of the GI distress and coordinate with other medical professionals to help the client better manage their symptoms.