Gastrointestinal (GI) Nutritionists and Dietitians in East Moriches, NY

Photo of Deborah A. Williams, Nutritionist/Dietitian, RD, CDN
Deborah A. Williams
Nutritionist/Dietitian, RD, CDN
Online Only
As a Registered Dietitian (RD, CDN), I help clients move beyond diets, confusion, and quick fixes into a sustainable, empowered relationship with food and body. My approach blends evidence-based nutrition with holistic practices rooted in neuroscience, mindset, and embodiment. Together, we uncover patterns that keep you stuck, calm the inner voice of doubt, and build trust in your body’s signals. Clients often arrive frustrated or disconnected; I guide them toward food freedom, body acceptance, and a clear, confident path to lasting wellness.
As a Registered Dietitian (RD, CDN), I help clients move beyond diets, confusion, and quick fixes into a sustainable, empowered relationship with food and body. My approach blends evidence-based nutrition with holistic practices rooted in neuroscience, mindset, and embodiment. Together, we uncover patterns that keep you stuck, calm the inner voice of doubt, and build trust in your body’s signals. Clients often arrive frustrated or disconnected; I guide them toward food freedom, body acceptance, and a clear, confident path to lasting wellness.
(631) 363-4580 View (631) 363-4580
Photo of Barbara Ann Grova, Nutritionist/Dietitian, INHC, AADP
Barbara Ann Grova
Nutritionist/Dietitian, INHC, AADP
Serves Area
I have over 20 years experience in womens hormonal health, weight loss, anxiety and nutrition. I am a 9 year Breast Cancer survivor, treating my stage 2 holistically. I help Survivors recover and prevent reoccurrence. Together we uncover the root cause of your health condition. I will give you a nutrition and lifestyle protocol so your body can heal naturally without medication. I teach you my life’s challenges coping skills. My clients lose an average of 12-15 lbs on my on-line program. I love and support you through every step, holding your hand until you’re ready to flourish on your own! I am very caring, dedicated, compassionate
I have over 20 years experience in womens hormonal health, weight loss, anxiety and nutrition. I am a 9 year Breast Cancer survivor, treating my stage 2 holistically. I help Survivors recover and prevent reoccurrence. Together we uncover the root cause of your health condition. I will give you a nutrition and lifestyle protocol so your body can heal naturally without medication. I teach you my life’s challenges coping skills. My clients lose an average of 12-15 lbs on my on-line program. I love and support you through every step, holding your hand until you’re ready to flourish on your own! I am very caring, dedicated, compassionate
(516) 530-7955 View (516) 530-7955

More Dietitians and Nutritionists Nearby

Photo of Molly Ostrander - Molly Ostrander | Women's Gut & Hormone Health, Nutritionist/Dietitian, MS, RDN LDN, IFNCP
Molly Ostrander | Women's Gut & Hormone Health
Nutritionist/Dietitian, MS, RDN LDN, IFNCP
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.
(718) 550-3694 View (718) 550-3694
Photo of Jennifer Clemente, Nutritionist/Dietitian, MS, CNS, CDN, IFMCP
Jennifer Clemente
Nutritionist/Dietitian, MS, CNS, CDN, IFMCP
Online Only
My philosophy centers on one simple, powerful truth: the gut is the foundation of health.
As a functional medicine provider specializing in gut health, my approach offers a unique alternative by combining cutting-edge stool testing, deeper blood labs, and intestinal permeability testing with heart-centered coaching. Together, we'll find a path forward including the right diet for your unique needs plus targeted nutrients to help you heal.
My philosophy centers on one simple, powerful truth: the gut is the foundation of health.
As a functional medicine provider specializing in gut health, my approach offers a unique alternative by combining cutting-edge stool testing, deeper blood labs, and intestinal permeability testing with heart-centered coaching. Together, we'll find a path forward including the right diet for your unique needs plus targeted nutrients to help you heal.
(646) 679-7940 View (646) 679-7940
Photo of Marina Bedrossian, Nutritionist/Dietitian, RDN, CDN, CLT, FMN
Marina Bedrossian
Nutritionist/Dietitian, RDN, CDN, CLT, FMN
Online Only
If you're exhausted from trying every diet, supplement, and protocol without lasting relief - and you're ready to finally understand what your body is trying to tell you - you've found the right place.
If you're exhausted from trying every diet, supplement, and protocol without lasting relief - and you're ready to finally understand what your body is trying to tell you - you've found the right place.
(631) 816-2287 View (631) 816-2287
Photo of Shoshana Pritzker - Nutrition by Shoshana, Nutritionist/Dietitian, RD, CDN, CSSD, CISSN
Nutrition by Shoshana
Nutritionist/Dietitian, RD, CDN, CSSD, CISSN
Online Only
My ideal client is someone who is ready to take control of their nutrition and lifestyle. A positive attitude and belief in your own abilities to make lasting lifestyle changes is the key to success in any areas of your life, including diet and nutrition. If you're someone who is excited about learning new things, then I'm the right Dietitian for you.
My ideal client is someone who is ready to take control of their nutrition and lifestyle. A positive attitude and belief in your own abilities to make lasting lifestyle changes is the key to success in any areas of your life, including diet and nutrition. If you're someone who is excited about learning new things, then I'm the right Dietitian for you.
(321) 351-3058 View (321) 351-3058
Photo of Renee M Barbis - R.M.B. Health~Rejuvenating Mind & Body, Nutritionist/Dietitian, CHHC, AADP
R.M.B. Health~Rejuvenating Mind & Body
Nutritionist/Dietitian, CHHC, AADP
East Setauket, NY 11733
I offer an anti-inflammatory detox program in order to jump start weight loss, clear up asthma, arthritis, digestive disorders (IBS), skin conditions, and overall well being.
I primarily work with women from the ages of 21-45 who are struggling with depression, anxiety, fertility issues, life issues, and unhappiness. While working together we are able to find an individualized plan that will suit your needs. We will use foods, handouts, cooking demonstrations, goals, and other healing techniques to assist you in becoming the person you always dreamed you could be!
I offer an anti-inflammatory detox program in order to jump start weight loss, clear up asthma, arthritis, digestive disorders (IBS), skin conditions, and overall well being.
I primarily work with women from the ages of 21-45 who are struggling with depression, anxiety, fertility issues, life issues, and unhappiness. While working together we are able to find an individualized plan that will suit your needs. We will use foods, handouts, cooking demonstrations, goals, and other healing techniques to assist you in becoming the person you always dreamed you could be!
(631) 240-0721 View (631) 240-0721
Photo of Francesca Alfano, Nutritionist/Dietitian, MS, CDN, CNS, IFNCP
Francesca Alfano
Nutritionist/Dietitian, MS, CDN, CNS, IFNCP
Serves Area
I help women who are struggling to lose weight implement simple, sustainable food and lifestyle habits so they can support a healthy metabolism, balance hormones, increase energy levels, and permanently lose weight without counting calories or following restrictive diets. Unlike traditional diets, I use an individualized functional medicine and culinary nutrition approach to help my clients build lifelong healthy habits so they can confidently nourish their bodies in a delicious and satisfying way.
I help women who are struggling to lose weight implement simple, sustainable food and lifestyle habits so they can support a healthy metabolism, balance hormones, increase energy levels, and permanently lose weight without counting calories or following restrictive diets. Unlike traditional diets, I use an individualized functional medicine and culinary nutrition approach to help my clients build lifelong healthy habits so they can confidently nourish their bodies in a delicious and satisfying way.
(631) 856-2213 View (631) 856-2213
Photo of Jacqueline Iannone - The Rite Bite Nutrition Counseling, PLLC, Nutritionist/Dietitian, MS, RDN, CDN
The Rite Bite Nutrition Counseling, PLLC
Nutritionist/Dietitian, MS, RDN, CDN
Miller Place, NY 11764
With backgrounds in both hospital and private practice, our dietitians are experienced in conditions ranging from weight management to diabetes, thyroid, cardiac health, menopause, GI concerns, pediatrics, and more.
Struggling with your health or feeling stuck? Most of our patients pay nothing out of pocket—insurance often covers visits in full with no copay. Maybe you’ve tried countless diets, or maybe your goal isn’t even weight loss—you just want to better manage diabetes, support heart health, ease digestion, or feel more energized. At The Rite Bite Nutrition Counseling, our team of award winning Registered Dietitian Nutritionists takes a different approach. We don’t do fad diets or one-size-fits-all plans. Instead, we offer evidence-based, personalized care that works with your lifestyle and goals.
With backgrounds in both hospital and private practice, our dietitians are experienced in conditions ranging from weight management to diabetes, thyroid, cardiac health, menopause, GI concerns, pediatrics, and more.
Struggling with your health or feeling stuck? Most of our patients pay nothing out of pocket—insurance often covers visits in full with no copay. Maybe you’ve tried countless diets, or maybe your goal isn’t even weight loss—you just want to better manage diabetes, support heart health, ease digestion, or feel more energized. At The Rite Bite Nutrition Counseling, our team of award winning Registered Dietitian Nutritionists takes a different approach. We don’t do fad diets or one-size-fits-all plans. Instead, we offer evidence-based, personalized care that works with your lifestyle and goals.
(631) 869-4069 View (631) 869-4069
Photo of Ann Silver, Nutritionist/Dietitian, MS, RDN, CDCES, CDN
Ann Silver
Nutritionist/Dietitian, MS, RDN, CDCES, CDN
Serves Area
Meeting with Ann Silver to address your nutritional issues and goals involves allowing Ann a window into your life. Changing one's eating style or food choices is not only about selecting different foods but looking at all aspects of your life that impacts your eating. The questions that need to be explored are why do you eat, when do you eat, where do you eat, how do you eat, what do you eat and how much do you eat.
Meeting with Ann Silver to address your nutritional issues and goals involves allowing Ann a window into your life. Changing one's eating style or food choices is not only about selecting different foods but looking at all aspects of your life that impacts your eating. The questions that need to be explored are why do you eat, when do you eat, where do you eat, how do you eat, what do you eat and how much do you eat.
(631) 284-4815 View (631) 284-4815
Photo of Shana Maleeff - FoodandFitnessPro, LLC, Nutritionist/Dietitian, MA, RD, CDN
FoodandFitnessPro, LLC
Nutritionist/Dietitian, MA, RD, CDN
1 Endorsed
Serves Area
I also have 16+ years of experience working with diabetes, prediabetes, PCOS, high cholesterol, high blood pressure, fitness/sports nutrition, GI disorders, and more.
I use a proven formula in my meal plans and programs that results in weight loss, balancing blood sugars, increasing energy, and sleeping better. My program includes unlimited support and accountability, private online support group, metabolic testing, and body fat testing. These tools help me tailor your program.
I also have 16+ years of experience working with diabetes, prediabetes, PCOS, high cholesterol, high blood pressure, fitness/sports nutrition, GI disorders, and more.
I use a proven formula in my meal plans and programs that results in weight loss, balancing blood sugars, increasing energy, and sleeping better. My program includes unlimited support and accountability, private online support group, metabolic testing, and body fat testing. These tools help me tailor your program.
(516) 441-9013 View (516) 441-9013
Photo of Nicole Holness, Nutritionist/Dietitian, MS, RD, CDN, IBCLC
Nicole Holness
Nutritionist/Dietitian, MS, RD, CDN, IBCLC
Serves Area
PCOS l Endometriosis l Fertility l Pregnancy l Postpartum l Women's Health: I’m passionate about helping women reclaim their health. I’ve helped hundreds of women manage their PCOS, fertility, pregnancy, and find relief from endometriosis. With over a decade's experience in top NYC hospitals like NYU Langone and Mount Sinai, I bring a blend of clinical expertise and compassionate care to women’s health. Beyond my clinical knowledge, I have a background in culinary arts—having earned a culinary degree and cooked in Michelin-star restaurants. Food is medicine, yet should be a joy, and I bring these experiences into my practice.
PCOS l Endometriosis l Fertility l Pregnancy l Postpartum l Women's Health: I’m passionate about helping women reclaim their health. I’ve helped hundreds of women manage their PCOS, fertility, pregnancy, and find relief from endometriosis. With over a decade's experience in top NYC hospitals like NYU Langone and Mount Sinai, I bring a blend of clinical expertise and compassionate care to women’s health. Beyond my clinical knowledge, I have a background in culinary arts—having earned a culinary degree and cooked in Michelin-star restaurants. Food is medicine, yet should be a joy, and I bring these experiences into my practice.
(929) 264-5030 View (929) 264-5030
Photo of Cristina Rivera - Nutrition in Motion, P.C., Nutritionist/Dietitian, MS, RD, CSSD, CDN, CEDS-C
Nutrition in Motion, P.C.
Nutritionist/Dietitian, MS, RD, CSSD, CDN, CEDS-C
Online Only
The Registered Dietitians at Nutrition in Motion, P.C. share a philosophy of using food to fuel, nourish and strengthen one's body. We treat each patient as an individual in order to collaboratively create a plan to reach the individual's goals. We believe in the use of behavior modification in conjunction with nutrition counseling, rather than attempting to follow an unsustainable diet. This helps clients make more attainable and enduring lifestyle changes. All foods can have a place as a part of a healthy lifestyle, and we are here to help you make them fit.
The Registered Dietitians at Nutrition in Motion, P.C. share a philosophy of using food to fuel, nourish and strengthen one's body. We treat each patient as an individual in order to collaboratively create a plan to reach the individual's goals. We believe in the use of behavior modification in conjunction with nutrition counseling, rather than attempting to follow an unsustainable diet. This helps clients make more attainable and enduring lifestyle changes. All foods can have a place as a part of a healthy lifestyle, and we are here to help you make them fit.
(631) 528-2139 View (631) 528-2139

Online Dietitians and Nutritionists

Photo of Jillian Mergruen, Nutritionist/Dietitian, RD, CDN
Jillian Mergruen
Nutritionist/Dietitian, RD, CDN
3 Endorsed
Online Only
I am a registered dietitian based in New York City who specializes in disordered eating and eating disorder treatment as well as other nutrition-related issues, like diabetes and GI nutrition.
I work with my clients to instill mindful eating and flexible eating practices. We can work to integrate the mindset that all foods fit and focuses on eating balanced meals and snacks. We can explore your relationship with your body and movement. We can also do meal support sessions and food exposure work together if that would feel supportive for you.
I am a registered dietitian based in New York City who specializes in disordered eating and eating disorder treatment as well as other nutrition-related issues, like diabetes and GI nutrition.
I work with my clients to instill mindful eating and flexible eating practices. We can work to integrate the mindset that all foods fit and focuses on eating balanced meals and snacks. We can explore your relationship with your body and movement. We can also do meal support sessions and food exposure work together if that would feel supportive for you.
(516) 604-3316 View (516) 604-3316
Photo of Laura Cordella, Nutritionist/Dietitian, MS, RDN, CDN
Laura Cordella
Nutritionist/Dietitian, MS, RDN, CDN
3 Endorsed
Online Only
Laura is a Registered Dietitian Nutritionist (RDN) with a background in psychology that focuses on helping clients cultivate a safe and nourishing relationship with food and eating while supporting their mental health. She believes health is so much more than what we eat, so she has a special focus at the intersection of nutrition and psychological wellbeing. Laura has won numerous awards for her holistic approach to care, including Dietitian of the Year at New York Presbyterian Hospital - one of the largest health systems in NYC.
Laura is a Registered Dietitian Nutritionist (RDN) with a background in psychology that focuses on helping clients cultivate a safe and nourishing relationship with food and eating while supporting their mental health. She believes health is so much more than what we eat, so she has a special focus at the intersection of nutrition and psychological wellbeing. Laura has won numerous awards for her holistic approach to care, including Dietitian of the Year at New York Presbyterian Hospital - one of the largest health systems in NYC.
(914) 690-7909 View (914) 690-7909
Photo of Ashley Danulevith, Nutritionist/Dietitian, MS, RD
Ashley Danulevith
Nutritionist/Dietitian, MS, RD
1 Endorsed
Online Only
Are you feeling overwhelmed managing diabetes? Ashley can help you navigate your blood sugars while also addressing complicated relationships with food. Ashley helps her clients expertly manage blood sugars in a stress-free way. If you feel caught between the medical expectations of “perfect” diabetes management and the emotional toll of rigid food rules, guilt, or shame around eating, Ashley can help!
Are you feeling overwhelmed managing diabetes? Ashley can help you navigate your blood sugars while also addressing complicated relationships with food. Ashley helps her clients expertly manage blood sugars in a stress-free way. If you feel caught between the medical expectations of “perfect” diabetes management and the emotional toll of rigid food rules, guilt, or shame around eating, Ashley can help!
(516) 928-4393 View (516) 928-4393
Photo of Adiana Castro - Compass Nutrition, Nutritionist/Dietitian, MS, RDN, CDN, CLT
Compass Nutrition
Nutritionist/Dietitian, MS, RDN, CDN, CLT
Online Only
We specialize in weight management, food sensitivities (MRT/LEAP), blood sugar control, heart health, digestive issues, sports nutrition, and prenatal care—creating realistic plans you can actually follow and sustain.
Our patients are often overwhelmed, frustrated, and tired of nutrition plans that don’t work. Many are dealing with symptoms like bloating, fatigue, migraines, blood sugar swings, or weight changes—and want clear answers. They come to us for clarity, relief, and a sustainable way to eat that fits real life. We simplify nutrition with personalized, realistic plans based on how their body responds to food—helping them feel better, understand triggers, and build habits that last.
We specialize in weight management, food sensitivities (MRT/LEAP), blood sugar control, heart health, digestive issues, sports nutrition, and prenatal care—creating realistic plans you can actually follow and sustain.
Our patients are often overwhelmed, frustrated, and tired of nutrition plans that don’t work. Many are dealing with symptoms like bloating, fatigue, migraines, blood sugar swings, or weight changes—and want clear answers. They come to us for clarity, relief, and a sustainable way to eat that fits real life. We simplify nutrition with personalized, realistic plans based on how their body responds to food—helping them feel better, understand triggers, and build habits that last.
(347) 577-9344 View (347) 577-9344
Photo of Alexandra (Lexi) Orlan, Nutritionist/Dietitian, MS, RDN, CDN
Alexandra (Lexi) Orlan
Nutritionist/Dietitian, MS, RDN, CDN
1 Endorsed
Online Only
I specialize in gentle weight loss, gut health and digestion, diabetes, gestational diabetes, pregnancy nutrition, bariatric nutrition, and heart health.
I have evening, telehealth appointments available. For the best result, I suggest we meet for at least 3 months (of course, longer is better!). Most of my clients meet with me weekly or every other week. Email me for the quickest response!
I specialize in gentle weight loss, gut health and digestion, diabetes, gestational diabetes, pregnancy nutrition, bariatric nutrition, and heart health.
I have evening, telehealth appointments available. For the best result, I suggest we meet for at least 3 months (of course, longer is better!). Most of my clients meet with me weekly or every other week. Email me for the quickest response!
(732) 379-1434 View (732) 379-1434
Photo of Erika Jacobson - Erika Jacobson Nutrition & Wellness , Nutritionist/Dietitian, MS, RD
Erika Jacobson Nutrition & Wellness
Nutritionist/Dietitian, MS, RD
1 Endorsed
Online Only
I’m Erika, an integrative and functional dietitian who helps people with digestive issues who are tired of being told “everything is normal” - when you definitely don’t feel normal.
Unlike band-aid treatments or long-term restrictive diets that don’t address the root cause, I use a functional nutrition approach that includes specialized testing, personalized nutrition, sustainable lifestyle strategies. Together, we’ll get to the root of your gut imbalances & craft your personalized plan, so you can nourish and heal your gut‒ for good.
I’m Erika, an integrative and functional dietitian who helps people with digestive issues who are tired of being told “everything is normal” - when you definitely don’t feel normal.
Unlike band-aid treatments or long-term restrictive diets that don’t address the root cause, I use a functional nutrition approach that includes specialized testing, personalized nutrition, sustainable lifestyle strategies. Together, we’ll get to the root of your gut imbalances & craft your personalized plan, so you can nourish and heal your gut‒ for good.
(718) 395-4772 View (718) 395-4772
Photo of Alex Gavronsky, Nutritionist/Dietitian, MS, RDN, CDN, CNSC
Alex Gavronsky
Nutritionist/Dietitian, MS, RDN, CDN, CNSC
4 Endorsed
Brooklyn, NY 11217
Alex is a board-certified lead dietitian at one of New York's largest hospitals. He started his private practice to improve access to nutritional counseling and build deep, long-term relationships with patients who are managing nutrition-related health conditions. His work focuses on patients with both chronic and acute/severe conditions, ranging from rapid weight change to cancer. Regardless of health reason, Alex strives to always create a kind and caring environment for his patients.
Alex is a board-certified lead dietitian at one of New York's largest hospitals. He started his private practice to improve access to nutritional counseling and build deep, long-term relationships with patients who are managing nutrition-related health conditions. His work focuses on patients with both chronic and acute/severe conditions, ranging from rapid weight change to cancer. Regardless of health reason, Alex strives to always create a kind and caring environment for his patients.
(716) 576-3638 View (716) 576-3638
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.