Gastrointestinal (GI) Nutritionists and Dietitians in San Marcos, CA

Photo of Cassie Wolfe, Nutritionist/Dietitian, RD
Cassie Wolfe
Nutritionist/Dietitian, RD
1 Endorsed
Online Only
Hello! I am a California-based Registered Dietitian with the group practice, Karuna Wellness Studio, who sees clients both virtually across the U.S. Karuna is a group practice specializing in nutrition and movement services through a anti-diet, HAES-aligned, weight-neutral approach. We integrate the pillars of lifestyle medicine and nutritional psychiatry to serve as health advocates for our clients, promoting both physical and mental health. I truly enjoy helping clients explore their relationship with food, movement and their bodies.
Hello! I am a California-based Registered Dietitian with the group practice, Karuna Wellness Studio, who sees clients both virtually across the U.S. Karuna is a group practice specializing in nutrition and movement services through a anti-diet, HAES-aligned, weight-neutral approach. We integrate the pillars of lifestyle medicine and nutritional psychiatry to serve as health advocates for our clients, promoting both physical and mental health. I truly enjoy helping clients explore their relationship with food, movement and their bodies.
(760) 418-6146 View (760) 418-6146

More Dietitians and Nutritionists Nearby

Photo of Cristal Medina, Nutritionist/Dietitian, MS, RDN, RYT-200
Cristal Medina
Nutritionist/Dietitian, MS, RDN, RYT-200
Serves Area
Are you ready to heal your relationship with food, movement, and your body? You don’t have to do it alone! I am a trauma-informed, anti-diet Registered Dietitian Nutritionist and Yoga Teacher. My goal is to help you learn how to make peace with food and relearn trust in your body. My specialized approach will help you reconnect with your body’s inner wisdom, free yourself of shame, and heal what no longer serves you. I can help you break free from dieting with intuitive eating counseling. I offer eating disorder treatment for Anorexia, Bulimia, Binge Eating, & disordered eating. I also offer body-positive yoga.
Are you ready to heal your relationship with food, movement, and your body? You don’t have to do it alone! I am a trauma-informed, anti-diet Registered Dietitian Nutritionist and Yoga Teacher. My goal is to help you learn how to make peace with food and relearn trust in your body. My specialized approach will help you reconnect with your body’s inner wisdom, free yourself of shame, and heal what no longer serves you. I can help you break free from dieting with intuitive eating counseling. I offer eating disorder treatment for Anorexia, Bulimia, Binge Eating, & disordered eating. I also offer body-positive yoga.
(619) 597-1035 View (619) 597-1035
Photo of Paula Sturm, Nutritionist/Dietitian, RDN, FMN, CGN, CFSP, MNLP
Paula Sturm
Nutritionist/Dietitian, RDN, FMN, CGN, CFSP, MNLP
San Diego, CA 92130
Gastrointestinal, Hormone, Genomic, and Micronutrient Testing offered.
Have you been told you're "fine", that all of your lab work looks great but you don't feel great? Are you struggling to have the energy you need to play with your kids? Do you feel bloated, achy, heavy, and a little spacey sometimes? Or, maybe you've been struggling with your weight? Have you tried to figure out your myriad of unrelated symptoms to no avail and started chalking it up to aging? Look no further, I can help you address these issues and more with my experience as a Functional Medicine Dietitian. We'll dive deep and discover the root cause/s of what is happening so you can feel back to your energetic self again.
Gastrointestinal, Hormone, Genomic, and Micronutrient Testing offered.
Have you been told you're "fine", that all of your lab work looks great but you don't feel great? Are you struggling to have the energy you need to play with your kids? Do you feel bloated, achy, heavy, and a little spacey sometimes? Or, maybe you've been struggling with your weight? Have you tried to figure out your myriad of unrelated symptoms to no avail and started chalking it up to aging? Look no further, I can help you address these issues and more with my experience as a Functional Medicine Dietitian. We'll dive deep and discover the root cause/s of what is happening so you can feel back to your energetic self again.
(858) 496-7928 View (858) 496-7928
Photo of Alexia Beauregard, Nutritionist/Dietitian, MS, RD, CSP, LD
Alexia Beauregard
Nutritionist/Dietitian, MS, RD, CSP, LD
3 Endorsed
Serves Area
My ideal client is an individual or parent seeking to learn more about their food allergy diagnosis, diagnosis related to abnormal gut function.
Alexia specializes in food allergies and gut disorders, including celiac disease, IBS, and IBD. She also supports clients with eating disorders, helping them build a healthier relationship with food. Her approach aims to make eating joyful and empower clients to care for themselves through food.
My ideal client is an individual or parent seeking to learn more about their food allergy diagnosis, diagnosis related to abnormal gut function.
Alexia specializes in food allergies and gut disorders, including celiac disease, IBS, and IBD. She also supports clients with eating disorders, helping them build a healthier relationship with food. Her approach aims to make eating joyful and empower clients to care for themselves through food.
(508) 469-5018 View (508) 469-5018
Photo of Tanya Mezher, Nutritionist/Dietitian, MS, RD, CDN
Tanya Mezher
Nutritionist/Dietitian, MS, RD, CDN
Online Only
I work with busy professionals battling digestive concerns, weight gain, fatigue, and blood sugar swings from hectic schedules.
I am an integrative and functional dietitian which means food/nutrition is medicine and integral to your well being but not the only focus. I seek to understand you as a whole person which includes your personal & family history, preferences, sleep patterns, stress, lifestyle, lab data, etc. to create realistic habits that fit your life.
I work with busy professionals battling digestive concerns, weight gain, fatigue, and blood sugar swings from hectic schedules.
I am an integrative and functional dietitian which means food/nutrition is medicine and integral to your well being but not the only focus. I seek to understand you as a whole person which includes your personal & family history, preferences, sleep patterns, stress, lifestyle, lab data, etc. to create realistic habits that fit your life.
(949) 628-1454 View (949) 628-1454
Photo of Ellen L. Syversen - Ellen Syversen, Functional Nutrition, Nutritionist/Dietitian, MPH, FNTP, MRWP
Ellen Syversen, Functional Nutrition
Nutritionist/Dietitian, MPH, FNTP, MRWP
Serves Area
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.
(541) 366-4062 View (541) 366-4062
Photo of Ana Cristina Lewis - Functional Nutrition by Ana, Nutritionist/Dietitian, MS, RD, LDN, IFMNT
Functional Nutrition by Ana
Nutritionist/Dietitian, MS, RD, LDN, IFMNT
Online Only
I specialize in balancing hormones, fertility, digestive healing, and skin health.
I use a blend of medical nutrition therapy, specialty lab testing, nervous system tools, and individualized supplement protocols to get to the root of your symptoms. We work together for at least 4 months, allowing time for adequate exploration of your health presentation. No quick fixes or crash diets here!
I specialize in balancing hormones, fertility, digestive healing, and skin health.
I use a blend of medical nutrition therapy, specialty lab testing, nervous system tools, and individualized supplement protocols to get to the root of your symptoms. We work together for at least 4 months, allowing time for adequate exploration of your health presentation. No quick fixes or crash diets here!
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Photo of Naria Le Mire - Naria Le Mire Nutrition - Virtual Practice, Nutritionist/Dietitian, MPH, RD
Naria Le Mire Nutrition - Virtual Practice
Nutritionist/Dietitian, MPH, RD
Online Only
Ready to stop the digestive pain!?
I specialize in gut health and help my clients stop the digestive pain while adding foods back to the diet!
Ready to stop the digestive pain!?
I specialize in gut health and help my clients stop the digestive pain while adding foods back to the diet!
(619) 329-8251 View (619) 329-8251
Photo of Donna M Wolf, Nutritionist/Dietitian, RDN, CLT, IFMNT
Donna M Wolf
Nutritionist/Dietitian, RDN, CLT, IFMNT
2 Endorsed
Oceanside, CA 92054
I specialize in digestive issues, food sensitivities & allergies, and weight management.
30+ yr. exp. w/ specialized training: Identification & treatment of food sensitivities & allergies; weight loss, health issues. Passionate about healing, teaching, counseling. Help clients feel balanced, hi energy, more productive, less pain, & eat healthfully for life. Have fibromyalgia, hypothyroid, and healed myself. Teach clients how to manage health issues & live with vitality & hope for future.
I specialize in digestive issues, food sensitivities & allergies, and weight management.
30+ yr. exp. w/ specialized training: Identification & treatment of food sensitivities & allergies; weight loss, health issues. Passionate about healing, teaching, counseling. Help clients feel balanced, hi energy, more productive, less pain, & eat healthfully for life. Have fibromyalgia, hypothyroid, and healed myself. Teach clients how to manage health issues & live with vitality & hope for future.
(858) 224-0731 View (858) 224-0731
Photo of Adam Walz, Nutritionist/Dietitian, RD, LD, ISAK-1
Adam Walz
Nutritionist/Dietitian, RD, LD, ISAK-1
3 Endorsed
Serves Area
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.
(551) 365-7752 View (551) 365-7752
Photo of Kelly Jean Dammeyer-Mills, Nutritionist/Dietitian
Kelly Jean Dammeyer-Mills
Nutritionist/Dietitian
Encinitas, CA 92024
I specialize in correcting the root cause behind health conditions, as well as, weight loss, digestive disorders, hormone imbalances, blood sugar stabilization and inflammatory issues.
I will lead you to success by educating you about your body and how to properly manage your nutrition in an easy, straightforward way.
I specialize in correcting the root cause behind health conditions, as well as, weight loss, digestive disorders, hormone imbalances, blood sugar stabilization and inflammatory issues.
I will lead you to success by educating you about your body and how to properly manage your nutrition in an easy, straightforward way.
(760) 389-4325 View (760) 389-4325
Photo of Kelli Foerster, Nutritionist/Dietitian, MS, CNS, CPT
Kelli Foerster
Nutritionist/Dietitian, MS, CNS, CPT
Online Only
My expertise is in metabolic health, weight loss, sports nutrition, and gut health.
Hey! I'm Kelli, let's build the ideal strategy for your health and your goals. I help people use diet, exercise, and mindset to improve energy, lose weight, build muscle, and improve health. I know it can be overwhelming, let me help you make it simple AND effective :)
My expertise is in metabolic health, weight loss, sports nutrition, and gut health.
Hey! I'm Kelli, let's build the ideal strategy for your health and your goals. I help people use diet, exercise, and mindset to improve energy, lose weight, build muscle, and improve health. I know it can be overwhelming, let me help you make it simple AND effective :)
(818) 600-9625 View (818) 600-9625
Photo of Dianna Reilly - Dianna Reilly Nutrition, Nutritionist/Dietitian, MS, RD, RDN
Dianna Reilly Nutrition
Nutritionist/Dietitian, MS, RD, RDN
Serves Area
I am a Registered Dietitian Nutritionist, Certified Intuitive Eating Counselor and Health at Every Size (HAES) practitioner. I specialize in eating disorder recovery and helping people find food freedom. Whether you are struggling with an eating disorder, tired of yo-yo dieting and weight cycling, or just feeling confused about how to eat, I am here to guide you towards the path to food freedom and Intuitive Eating. Every person has their own personal journey with food. I am here to listen and understand yours and find the most effective interventions individual to you.
I am a Registered Dietitian Nutritionist, Certified Intuitive Eating Counselor and Health at Every Size (HAES) practitioner. I specialize in eating disorder recovery and helping people find food freedom. Whether you are struggling with an eating disorder, tired of yo-yo dieting and weight cycling, or just feeling confused about how to eat, I am here to guide you towards the path to food freedom and Intuitive Eating. Every person has their own personal journey with food. I am here to listen and understand yours and find the most effective interventions individual to you.
(424) 789-8780 View (424) 789-8780
Photo of Nadia Pugh, Nutritionist/Dietitian, MS, RDN, LDN
Nadia Pugh
Nutritionist/Dietitian, MS, RDN, LDN
4 Endorsed
San Diego, CA 92116
, pediatrics, disordered eating, generalized healthy eating, ketogenic diet, tube feed management, GI health, weight loss and weight promotion.
Nadia is passionate about women’s health, PCOS, fertility, thyroid and autoimmune disorders, renal health, and diabetes management. Her holistic approach focuses on individualized nutrition plans that cater to your unique needs and goals. She emphasizes that there’s no one-size-fits-all diet and aims to empower you with healthy eating habits that resonate with your preferences. Whether you’re addressing imbalances, seeking better habits, or enhancing your relationship with food, Nadia is committed to providing personalized support and practical advice for lasting well-being.
, pediatrics, disordered eating, generalized healthy eating, ketogenic diet, tube feed management, GI health, weight loss and weight promotion.
Nadia is passionate about women’s health, PCOS, fertility, thyroid and autoimmune disorders, renal health, and diabetes management. Her holistic approach focuses on individualized nutrition plans that cater to your unique needs and goals. She emphasizes that there’s no one-size-fits-all diet and aims to empower you with healthy eating habits that resonate with your preferences. Whether you’re addressing imbalances, seeking better habits, or enhancing your relationship with food, Nadia is committed to providing personalized support and practical advice for lasting well-being.
(904) 567-0490 View (904) 567-0490
Photo of Maria Isabel Ramirez Zamora - Holistika Nutrition and Wellness, Nutritionist/Dietitian, MS, CN, CNSc
Holistika Nutrition and Wellness
Nutritionist/Dietitian, MS, CN, CNSc
Online Only
We specialize in supporting women through hormonal changes, PCOS, pregnancy, postpartum recovery, and menopause, as well as adults managing diabetes, high cholesterol, metabolic syndrome, and gut health concerns.
Many clients come to us frustrated by restrictive diets and quick fixes. At Holistika, we listen to your story and create personalized plans that fit your life. Using lifestyle medicine and nutrition therapy, we help you improve energy, balance hormones, and restore lasting health from the inside out.
We specialize in supporting women through hormonal changes, PCOS, pregnancy, postpartum recovery, and menopause, as well as adults managing diabetes, high cholesterol, metabolic syndrome, and gut health concerns.
Many clients come to us frustrated by restrictive diets and quick fixes. At Holistika, we listen to your story and create personalized plans that fit your life. Using lifestyle medicine and nutrition therapy, we help you improve energy, balance hormones, and restore lasting health from the inside out.
(206) 457-1558 View (206) 457-1558
Photo of Amy Ornelas, Nutritionist/Dietitian, RDN
Amy Ornelas
Nutritionist/Dietitian, RDN
La Mesa, CA 91942
Whether you are looking to end your battle with disordered eating, feeling tired and confused by diet culture, wanting to be done with food stress for good, or looking to find a way to finally feel great in your own body... I totally get the struggle. I've been there myself, and I can tell you that it is absolutely possible to find total food and body freedom. Utilizing the same holistic techniques that I've used to help hundreds of clients recover from unhealthy relationships with food & weight, I will help you reclaim your mind-body-food connection in order to feel your very best.
Whether you are looking to end your battle with disordered eating, feeling tired and confused by diet culture, wanting to be done with food stress for good, or looking to find a way to finally feel great in your own body... I totally get the struggle. I've been there myself, and I can tell you that it is absolutely possible to find total food and body freedom. Utilizing the same holistic techniques that I've used to help hundreds of clients recover from unhealthy relationships with food & weight, I will help you reclaim your mind-body-food connection in order to feel your very best.
(619) 344-8603 View (619) 344-8603
Photo of Hannah Auldridge, Nutritionist/Dietitian, RDN, LD, CEDS
Hannah Auldridge
Nutritionist/Dietitian, RDN, LD, CEDS
1 Endorsed
Serves Area
Hannah works with individuals aged 15 and up and has a special interest in supporting athletes and former athletes—people who often experience unique challenges related to performance, food, and body image. She brings experience from higher levels of care and has supported clients with a wide range of eating disorder diagnoses, including anorexia nervosa, bulimia nervosa, binge eating disorder (BED), ARFID, and OSFED.
Hannah works with individuals aged 15 and up and has a special interest in supporting athletes and former athletes—people who often experience unique challenges related to performance, food, and body image. She brings experience from higher levels of care and has supported clients with a wide range of eating disorder diagnoses, including anorexia nervosa, bulimia nervosa, binge eating disorder (BED), ARFID, and OSFED.
(617) 337-3855 View (617) 337-3855
Photo of Erica Markovitz, Nutritionist/Dietitian, MS, RD
Erica Markovitz
Nutritionist/Dietitian, MS, RD
Online Only
Whether you’re recovering from an eating disorder or working toward a more peaceful relationship with food, I emphasize a flexible, weight-neutral approach to nutrition. This means moving away from labeling foods as “good" or "bad” and letting go of seeing your body as something to fight against. I invite you to reconnect with your body as a vehicle for living and experiencing the world, rather than something to control. My goal is to support choices that feel informed and aligned with your needs, not driven by rules. If you’re looking for a supportive, judgment-free space where you can show up as you are, we might be a good fit.
Whether you’re recovering from an eating disorder or working toward a more peaceful relationship with food, I emphasize a flexible, weight-neutral approach to nutrition. This means moving away from labeling foods as “good" or "bad” and letting go of seeing your body as something to fight against. I invite you to reconnect with your body as a vehicle for living and experiencing the world, rather than something to control. My goal is to support choices that feel informed and aligned with your needs, not driven by rules. If you’re looking for a supportive, judgment-free space where you can show up as you are, we might be a good fit.
(323) 515-1249 View (323) 515-1249
Photo of Megan Hellner - AthleatMD, Nutritionist/Dietitian, DrPH, MPH, RD
AthleatMD
Nutritionist/Dietitian, DrPH, MPH, RD
Online Only
Hello, and welcome to AthleatMD!
Hello, and welcome to AthleatMD!
(470) 574-5442 View (470) 574-5442
Photo of Masha Sardari - Masha Sardari MS, RD, LD - Fearlessly Nourished , Nutritionist/Dietitian, MS, RDN, LDN
Masha Sardari MS, RD, LD - Fearlessly Nourished
Nutritionist/Dietitian, MS, RDN, LDN
Online Only
At Fearlessly Nourished, I’m passionate about working with clients struggling with eating disorders and disordered eating who are ready to transform their relationship with food and rediscover body trust. Together, we’ll break free from judgment and stress around nutrition, creating space for balance, body acceptance, and self-compassion.
At Fearlessly Nourished, I’m passionate about working with clients struggling with eating disorders and disordered eating who are ready to transform their relationship with food and rediscover body trust. Together, we’ll break free from judgment and stress around nutrition, creating space for balance, body acceptance, and self-compassion.
(904) 921-3421 View (904) 921-3421
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.