Gastrointestinal (GI) Nutritionists and Dietitians in Hillsborough County, FL

Photo of Nora Clemens - Nutrition and Wellness Solution, Nutritionist/Dietitian, IFNCP, RDN, CLT
Nutrition and Wellness Solution
Nutritionist/Dietitian, IFNCP, RDN, CLT
Online Only
Whether you want to lose weight or address your gut health, I can help you make changes in your eating & lifestyle habits so that you achieve your personal health and nutrition goals.
Let me help you get to the root cause of your health or medical condition with cutting edge testing. Let’s address WHY you have symptoms or medical issues, not put a Band-Aid or throw another pill on it. Tests offered: stool testing for gut health, breath test (sibo), vitamin/mineral test, food sensitivities, adrenal test
Whether you want to lose weight or address your gut health, I can help you make changes in your eating & lifestyle habits so that you achieve your personal health and nutrition goals.
Let me help you get to the root cause of your health or medical condition with cutting edge testing. Let’s address WHY you have symptoms or medical issues, not put a Band-Aid or throw another pill on it. Tests offered: stool testing for gut health, breath test (sibo), vitamin/mineral test, food sensitivities, adrenal test
(561) 644-4691 View (561) 644-4691
Photo of Jessica Vandergriff, Nutritionist/Dietitian, MS, RD, RDN, LD, LDN
Jessica Vandergriff
Nutritionist/Dietitian, MS, RD, RDN, LD, LDN
Tampa, FL 33603
Jessica’s ideal clients are individuals seeking support with diabetes management, heart health, healthy aging, and overall wellness. Many come to her feeling overwhelmed, stuck, or unsure how to improve their health in a sustainable way. Using an integrative, functional medicine approach, Jessica helps clients understand how food choices affect how they feel, identify possible root causes, and build a realistic plan that supports lasting progress.
Jessica’s ideal clients are individuals seeking support with diabetes management, heart health, healthy aging, and overall wellness. Many come to her feeling overwhelmed, stuck, or unsure how to improve their health in a sustainable way. Using an integrative, functional medicine approach, Jessica helps clients understand how food choices affect how they feel, identify possible root causes, and build a realistic plan that supports lasting progress.
(312) 872-4780 View (312) 872-4780
Photo of Brigitta Jansen, Nutritionist/Dietitian, MS, CNS, CDN, CHC
Brigitta Jansen
Nutritionist/Dietitian, MS, CNS, CDN, CHC
1 Endorsed
Online Only
My areas of expertise are weight management, diabetes management and prevention, hormone balancing, anti-inflammatory diets, and autoimmune and digestive disorders.
All disease begins in the gut, including autoimmune disorders, autism, depression, skin issues, overweight, diabetes and more. I focus on healing the gut using the 5R program, detoxing and addressing nutrient deficiencies. We will design a personalized diet and supplement plan that suits your preferences and lifestyle.
My areas of expertise are weight management, diabetes management and prevention, hormone balancing, anti-inflammatory diets, and autoimmune and digestive disorders.
All disease begins in the gut, including autoimmune disorders, autism, depression, skin issues, overweight, diabetes and more. I focus on healing the gut using the 5R program, detoxing and addressing nutrient deficiencies. We will design a personalized diet and supplement plan that suits your preferences and lifestyle.
(917) 818-0992 View (917) 818-0992
Photo of Nicole Hallissey, Nutritionist/Dietitian, MS, RDN, CDN
Nicole Hallissey
Nutritionist/Dietitian, MS, RDN, CDN
3 Endorsed
Serves Area
I focus on sustainable weight loss, diabetes, heart health, and digestive health.
Nearly 95 percent of my insurance clients pay $0 out of pocket for their sessions! When we work together I'll give you the tools needed to feel confident in your food choices and in control around food. I'll guide you through creating a plan that works for YOU, based on your body's needs, lifestyle, and food preferences. Together, we'll simplify cooking with quick, easy recipes, and I'll share realistic strategies to make meal planning a breeze. Let's make your wellness adventure enjoyable, achievable, and sustainable! Currently, I only offer virtual sessions. Get started ASAP, book directly using this link: bit.ly/bookRDnow
I focus on sustainable weight loss, diabetes, heart health, and digestive health.
Nearly 95 percent of my insurance clients pay $0 out of pocket for their sessions! When we work together I'll give you the tools needed to feel confident in your food choices and in control around food. I'll guide you through creating a plan that works for YOU, based on your body's needs, lifestyle, and food preferences. Together, we'll simplify cooking with quick, easy recipes, and I'll share realistic strategies to make meal planning a breeze. Let's make your wellness adventure enjoyable, achievable, and sustainable! Currently, I only offer virtual sessions. Get started ASAP, book directly using this link: bit.ly/bookRDnow
(551) 272-6869 View (551) 272-6869
Photo of Molly Ostrander - Molly Ostrander | Women's Gut Health, Nutritionist/Dietitian, MS, RDN, LDN, IFNCP
Molly Ostrander | Women's Gut Health
Nutritionist/Dietitian, MS, RDN, LDN, IFNCP
1 Endorsed
Online Only
GI care often becomes trial and error, which makes symptoms hard to interpret without guidance.
Are you a high-functioning woman 35+ whose digestion has gotten annoyingly unpredictable? Bloating shows up out of nowhere. IBS patterns shift. Hormonal changes make your “usual fixes” stop working. You’ve tried elimination diets and supplements that promised clarity and delivered... nothing. You want a structured, evidence-based plan to stabilize digestion, support hormone-related symptoms, and eat without constant second-guessing. I’ve lived with Crohn’s disease for more than three decades. That perspective informs a clinical approach focused on discernment and durable results, not generic advice or trend-driven protocols.
GI care often becomes trial and error, which makes symptoms hard to interpret without guidance.
Are you a high-functioning woman 35+ whose digestion has gotten annoyingly unpredictable? Bloating shows up out of nowhere. IBS patterns shift. Hormonal changes make your “usual fixes” stop working. You’ve tried elimination diets and supplements that promised clarity and delivered... nothing. You want a structured, evidence-based plan to stabilize digestion, support hormone-related symptoms, and eat without constant second-guessing. I’ve lived with Crohn’s disease for more than three decades. That perspective informs a clinical approach focused on discernment and durable results, not generic advice or trend-driven protocols.
(407) 809-3060 View (407) 809-3060
Photo of Melanie Schuller, Nutritionist/Dietitian, RDN, LD
Melanie Schuller
Nutritionist/Dietitian, RDN, LD
Online Only
I specialize in helping women with IBS, bloating, reflux, and constipation using personalized nutrition, gut-healing strategies, and optional testing.
I help women who are frustrated, exhausted, and constantly wondering what foods will set her off. She’s been dismissed or overwhelmed by rigid plans that don’t address the root of her symptoms. She just wants to feel normal again - less bloating, more energy, consistent digestion, and peace around food. She wants a plan that works in real life and a provider who listens. She’s ready to stop guessing, feel confident in her body, and finally enjoy food and life again.
I specialize in helping women with IBS, bloating, reflux, and constipation using personalized nutrition, gut-healing strategies, and optional testing.
I help women who are frustrated, exhausted, and constantly wondering what foods will set her off. She’s been dismissed or overwhelmed by rigid plans that don’t address the root of her symptoms. She just wants to feel normal again - less bloating, more energy, consistent digestion, and peace around food. She wants a plan that works in real life and a provider who listens. She’s ready to stop guessing, feel confident in her body, and finally enjoy food and life again.
(727) 353-6260 View (727) 353-6260
Photo of Samantha Siegel, Nutritionist/Dietitian, MPH, RDN, LDN
Samantha Siegel
Nutritionist/Dietitian, MPH, RDN, LDN
Online Only
Struggling to juggle work, life, and still find time to eat well? You’re not alone. Many of my clients are busy professionals who want to feel better, have more energy, and build healthier habits - but need a plan that fits real life. As someone who’s worked 100-hour weeks in finance, I understand that balance isn’t easy. My goal is to help you find a balanced approach to nutrition, without the extremes - through realistic, sustainable changes that fit your lifestyle and last long term.
Struggling to juggle work, life, and still find time to eat well? You’re not alone. Many of my clients are busy professionals who want to feel better, have more energy, and build healthier habits - but need a plan that fits real life. As someone who’s worked 100-hour weeks in finance, I understand that balance isn’t easy. My goal is to help you find a balanced approach to nutrition, without the extremes - through realistic, sustainable changes that fit your lifestyle and last long term.
(980) 377-2647 View (980) 377-2647
Photo of Alec Moore, Nutritionist/Dietitian, RD, LD
Alec Moore
Nutritionist/Dietitian, RD, LD
1 Endorsed
Online Only
As owner of Nutrition Collaborative, I specialize in sports performance fueling, weight management, digestive support, and sustainable lifestyle change.
I offer 1-on-1 nutrition coaching, medical nutrition therapy, and consultations designed to create lasting change. Clients gain practical tools, education, and structured guidance that build confidence and independence, equipping them to manage their nutrition successfully for life.
As owner of Nutrition Collaborative, I specialize in sports performance fueling, weight management, digestive support, and sustainable lifestyle change.
I offer 1-on-1 nutrition coaching, medical nutrition therapy, and consultations designed to create lasting change. Clients gain practical tools, education, and structured guidance that build confidence and independence, equipping them to manage their nutrition successfully for life.
(469) 809-4761 View (469) 809-4761
Photo of Emily Stewart, Nutritionist/Dietitian, MPH, RDN, LDN
Emily Stewart
Nutritionist/Dietitian, MPH, RDN, LDN
Serves Area
In addition to addressing these disorders, Emily is well-versed in managing commonly co-occurring gastrointestinal issues like IBS, IBD, GERD, food allergies/sensitivities, and hormonal dysfunctions such as PCOS, Hashimoto's, Hypothalamic Amenorrhea and Diabetes.
In my practice, I walk alongside you on your unique path toward healing. I approach each client with empathy; understanding that behind every struggle with food lies a deeply personal story. As a Non-Diet Dietitian, I reject harmful diet culture and instead embrace a holistic, Health At Every Size approach.
In addition to addressing these disorders, Emily is well-versed in managing commonly co-occurring gastrointestinal issues like IBS, IBD, GERD, food allergies/sensitivities, and hormonal dysfunctions such as PCOS, Hashimoto's, Hypothalamic Amenorrhea and Diabetes.
In my practice, I walk alongside you on your unique path toward healing. I approach each client with empathy; understanding that behind every struggle with food lies a deeply personal story. As a Non-Diet Dietitian, I reject harmful diet culture and instead embrace a holistic, Health At Every Size approach.
(609) 779-1152 View (609) 779-1152
Photo of Holly Zabrin, Nutritionist/Dietitian, MA, RDN, LDN, CEDS
Holly Zabrin
Nutritionist/Dietitian, MA, RDN, LDN, CEDS
2 Endorsed
Online Only
She also provides support for those with co-occurring conditions with particular interest in diabetes, gastrointestinal issues and mood/anxiety concerns.
She has extensive experience working in all levels of eating disorder care including residential, partial hospitalization, and outpatient care. She helps broaden their idea of what health really is. Holly wants to empower her clients to gain more autonomy and empowerment around their food decisions.
She also provides support for those with co-occurring conditions with particular interest in diabetes, gastrointestinal issues and mood/anxiety concerns.
She has extensive experience working in all levels of eating disorder care including residential, partial hospitalization, and outpatient care. She helps broaden their idea of what health really is. Holly wants to empower her clients to gain more autonomy and empowerment around their food decisions.
(224) 242-3132 View (224) 242-3132
Photo of Stacy Seslowsky - Heal From Food , Nutritionist/Dietitian, RD, LDN, MS
Heal From Food
Nutritionist/Dietitian, RD, LDN, MS
Serves Area
Health & weight issues are most often related to gut, hormone, or immune imbalance.
Digestive, hormonal, cardiovascular, energy, mood, fertility, immune (thyroid, rheumatoid arthritis, multiple sclerosis, etc.). Online platform: I spend an extended amount of time learning about the many life factors that led you to the present time. Together, we will implement a personalized nutrition/behavior modification plan to transform your health.
Health & weight issues are most often related to gut, hormone, or immune imbalance.
Digestive, hormonal, cardiovascular, energy, mood, fertility, immune (thyroid, rheumatoid arthritis, multiple sclerosis, etc.). Online platform: I spend an extended amount of time learning about the many life factors that led you to the present time. Together, we will implement a personalized nutrition/behavior modification plan to transform your health.
(904) 899-4955 View (904) 899-4955
Photo of Kristen Fustos - Kristen Fustos - Happy Tummy Nutrition, Nutritionist/Dietitian, MS, RDN, CSP
Kristen Fustos - Happy Tummy Nutrition
Nutritionist/Dietitian, MS, RDN, CSP
Online Only
Common concerns I support include: • Constipation or diarrhea • Reflux or GERD • Eczema or skin flares • Food allergies or sensitivities • FPIES, CSID, EoE & complex GI issues
I combine evidence-based pediatric nutrition with functional gut testing to identify what’s driving your child’s symptoms. Together, we create a personalized nutrition and supplement plan that supports digestion, reduces inflammation, and restores balance for lasting relief.
Common concerns I support include: • Constipation or diarrhea • Reflux or GERD • Eczema or skin flares • Food allergies or sensitivities • FPIES, CSID, EoE & complex GI issues
I combine evidence-based pediatric nutrition with functional gut testing to identify what’s driving your child’s symptoms. Together, we create a personalized nutrition and supplement plan that supports digestion, reduces inflammation, and restores balance for lasting relief.
(813) 851-2134 View (813) 851-2134
Photo of Brayden Goldblatt, Nutritionist/Dietitian, MS, RD, LD
Brayden Goldblatt
Nutritionist/Dietitian, MS, RD, LD
3 Endorsed
Tampa, FL 33602
Brayden is a registered dietitian with a passion for health and wellness. She supports clients through realistic, sustainable lifestyle changes using a compassionate, inclusive, and client-centered approach. Brayden blends evidence-based nutrition with practical habits to help clients feel their best in the long term. She creates a safe, non-judgmental space for exploring goals and challenges, offering personalized counseling and education to build lasting, meaningful change.
Brayden is a registered dietitian with a passion for health and wellness. She supports clients through realistic, sustainable lifestyle changes using a compassionate, inclusive, and client-centered approach. Brayden blends evidence-based nutrition with practical habits to help clients feel their best in the long term. She creates a safe, non-judgmental space for exploring goals and challenges, offering personalized counseling and education to build lasting, meaningful change.
(971) 365-3205 View (971) 365-3205
Photo of Ashley Lambert, Nutritionist/Dietitian, RD, LDN
Ashley Lambert
Nutritionist/Dietitian, RD, LDN
Online Only
Thank you for checking out my profile! I’m Ashley, a passionate and dedicated registered dietitian based in Florida. With over four years of experience in the field, including three years in a clinical setting, I have had the privilege of working with a diverse range of patients. My approach to nutrition is rooted in making small, sustainable changes that fit seamlessly into your lifestyle, ensuring that our goals are not just achievable but also realistic and long-lasting. I believe that nutrition should be simplified and personalized, and I am here to guide you through every step of your health journey with empathy and expertise.
Thank you for checking out my profile! I’m Ashley, a passionate and dedicated registered dietitian based in Florida. With over four years of experience in the field, including three years in a clinical setting, I have had the privilege of working with a diverse range of patients. My approach to nutrition is rooted in making small, sustainable changes that fit seamlessly into your lifestyle, ensuring that our goals are not just achievable but also realistic and long-lasting. I believe that nutrition should be simplified and personalized, and I am here to guide you through every step of your health journey with empathy and expertise.
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Photo of Sina D'Amico, Nutritionist/Dietitian, RDN, LDN
Sina D'Amico
Nutritionist/Dietitian, RDN, LDN
Tampa, FL 33607
Whether you're navigating digestive issues, trying to improve your energy, manage your weight, improve your athletic performance, or simply feel better in your body, I meet you where you are.
My approach is grounded in evidence, but also deeply personal. I take the time to understand you—your goals, your routines, and the roadblocks you’ve hit along the way. My goal is to help you build habits you can actually stick within your lifestyle.
Whether you're navigating digestive issues, trying to improve your energy, manage your weight, improve your athletic performance, or simply feel better in your body, I meet you where you are.
My approach is grounded in evidence, but also deeply personal. I take the time to understand you—your goals, your routines, and the roadblocks you’ve hit along the way. My goal is to help you build habits you can actually stick within your lifestyle.
(813) 592-4414 View (813) 592-4414
Photo of Jessica Heckroth, Nutritionist/Dietitian, MS, RDN
Jessica Heckroth
Nutritionist/Dietitian, MS, RDN
Online Only
Are you struggling with hormone imbalances, gut issues, or fertility challenges?
Whether you're navigating irregular cycles, PCOS, painful periods, IBS, or unexplained infertility, I work with you to uncover the "why" behind your symptoms and create a clear path forward using food, lifestyle, and functional testing when appropriate.
Are you struggling with hormone imbalances, gut issues, or fertility challenges?
Whether you're navigating irregular cycles, PCOS, painful periods, IBS, or unexplained infertility, I work with you to uncover the "why" behind your symptoms and create a clear path forward using food, lifestyle, and functional testing when appropriate.
(727) 202-5515 View (727) 202-5515
Photo of Kourtney C Gordon, Nutritionist/Dietitian, MS, RD/LD, CEDS-C, CSSD
Kourtney C Gordon
Nutritionist/Dietitian, MS, RD/LD, CEDS-C, CSSD
Tampa, FL 33609
With more than 25 years of clinical practice experience in both residential and outpatient environments, I have transformed my personal recovery journey into a passion for assisting clients in developing healthier relationships with food and their bodies. Whether working with adolescents or adults, my goal is to guide them in understanding, valuing, and embracing their body’s needs, enabling them to thrive and lead fulfilling lives in recovery from an eating disorder. I was also awarded my Board Certification in Sports Dietetics expanding my guidance to athletes struggling with disordered eating, REDS or eating disorders.
With more than 25 years of clinical practice experience in both residential and outpatient environments, I have transformed my personal recovery journey into a passion for assisting clients in developing healthier relationships with food and their bodies. Whether working with adolescents or adults, my goal is to guide them in understanding, valuing, and embracing their body’s needs, enabling them to thrive and lead fulfilling lives in recovery from an eating disorder. I was also awarded my Board Certification in Sports Dietetics expanding my guidance to athletes struggling with disordered eating, REDS or eating disorders.
(813) 590-7901 View (813) 590-7901
Photo of Stephanie Nicholson, Nutritionist/Dietitian, MS, RDN, LDN, CLT
Stephanie Nicholson
Nutritionist/Dietitian, MS, RDN, LDN, CLT
Tampa, FL 33609
Specialties include binge eating disorder, GLP-1 medication support, gut health, food sensitivities, perimenopause, diabetes, kidney disease, and healthy aging.
I create individualized plans that address both medical needs and real-life challenges. From managing binge eating disorder to navigating GLP-1 medications, gut issues, hormone changes, and chronic conditions, I provide targeted strategies that work in daily life — no cookie-cutter plans or quick fixes.
Specialties include binge eating disorder, GLP-1 medication support, gut health, food sensitivities, perimenopause, diabetes, kidney disease, and healthy aging.
I create individualized plans that address both medical needs and real-life challenges. From managing binge eating disorder to navigating GLP-1 medications, gut issues, hormone changes, and chronic conditions, I provide targeted strategies that work in daily life — no cookie-cutter plans or quick fixes.
(813) 680-3804 View (813) 680-3804
Photo of Pamela J Roney, Nutritionist/Dietitian, RDN, LDN
Pamela J Roney
Nutritionist/Dietitian, RDN, LDN
Tampa, FL 33609
I can help with general health and wellness, weight management, chronic disease prevention and management, diabetes management, pulmonary disease, gastrointestinal issues, cardiovascular disease, high cholesterol, high triglycerides, high blood pressure, atherosclerosis.
I look forward to helping you achieve your personal health goals through nutrition counseling and setting small specific goals. Please contact me with any questions you may have.
I can help with general health and wellness, weight management, chronic disease prevention and management, diabetes management, pulmonary disease, gastrointestinal issues, cardiovascular disease, high cholesterol, high triglycerides, high blood pressure, atherosclerosis.
I look forward to helping you achieve your personal health goals through nutrition counseling and setting small specific goals. Please contact me with any questions you may have.
(813) 736-5517 View (813) 736-5517
Photo of Olivia Davila - Liv Simply Nutrition, Nutritionist/Dietitian, RDN
Liv Simply Nutrition
Nutritionist/Dietitian, RDN
Online Only
Nutrition is not solely about the food we consume but also about our relationships with food, lifestyle factors, and emotional well-being. My approach is to establish an empathetic and supportive relationship with my clients. I will take the time to actively listen and assist with any personal struggles, challenges, and aspirations. By fostering a safe and judgment-free space, together we can develop personalized strategies tailored to your specific needs and goals. Let’s work together!
Nutrition is not solely about the food we consume but also about our relationships with food, lifestyle factors, and emotional well-being. My approach is to establish an empathetic and supportive relationship with my clients. I will take the time to actively listen and assist with any personal struggles, challenges, and aspirations. By fostering a safe and judgment-free space, together we can develop personalized strategies tailored to your specific needs and goals. Let’s work together!
(813) 592-1638 View (813) 592-1638
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.