Food Allergy Nutritionists and Dietitians in Port Jefferson, NY

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
Serves Area
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 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 Jacqueline Iannone - The Rite Bite Nutrition Counseling, PLLC, Nutritionist/Dietitian, MS, RDN, CDN
The Rite Bite Nutrition Counseling, PLLC
Nutritionist/Dietitian, MS, RDN, CDN
Serves Area
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.
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

More Dietitians and Nutritionists Nearby

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. You’re not alone if you feel trapped by symptoms yet routine labs were normal. Or you’ve been given medication, acid blockers, antidepressants or vague advice like “try eating better” without anyone asking why you have symptoms in the first place. I’ve been there too and I know a better way. My approach focuses on finding the root cause of your health concerns through deeper testing to answer key questions: What’s driving the inflammation? Is the gut lining compromised? Is the microbiome balanced? Is the body absorbing nutrients properly?
My philosophy centers on one simple, powerful truth: the gut is the foundation of health. You’re not alone if you feel trapped by symptoms yet routine labs were normal. Or you’ve been given medication, acid blockers, antidepressants or vague advice like “try eating better” without anyone asking why you have symptoms in the first place. I’ve been there too and I know a better way. My approach focuses on finding the root cause of your health concerns through deeper testing to answer key questions: What’s driving the inflammation? Is the gut lining compromised? Is the microbiome balanced? Is the body absorbing nutrients properly?
(646) 679-7940 View (646) 679-7940
Photo of Jillian Mergruen, Nutritionist/Dietitian, RD, CDN
Jillian Mergruen
Nutritionist/Dietitian, RD, CDN
3 Endorsed
Online Only
If you are struggling with your relationship with food, movement or your body, we might be a good fit to work together! 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. If you often feel pre-occupied with food or your body, struggle with feeling chaotic or in control around food, or if it feels hard to feel confident in your food choices, we can do this work together! I am here to support you in finding peace with food and your body. My goal is to help you do sustainable work with support!
If you are struggling with your relationship with food, movement or your body, we might be a good fit to work together! 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. If you often feel pre-occupied with food or your body, struggle with feeling chaotic or in control around food, or if it feels hard to feel confident in your food choices, we can do this work together! I am here to support you in finding peace with food and your body. My goal is to help you do sustainable work with support!
(516) 604-3316 View (516) 604-3316
Photo of Llynn Newman, Nutritionist/Dietitian, MS, CN, NYS-Lic, AHG
Llynn Newman
Nutritionist/Dietitian, MS, CN, NYS-Lic, AHG
Serves Area
Llynn Newman works on a very broad scale with a tremendous amount of experience in regards to and discussed in her profile. Ms Newman works with each person as an individual with their concerns, lifestyles, favorite foods, dis-eases, stresses, possible herbs, supplements, medications etc.. Her goal is for this to be a Stress Less process to maintain and excel in Optimum Health and Wellness and Longevity!!!
Llynn Newman works on a very broad scale with a tremendous amount of experience in regards to and discussed in her profile. Ms Newman works with each person as an individual with their concerns, lifestyles, favorite foods, dis-eases, stresses, possible herbs, supplements, medications etc.. Her goal is for this to be a Stress Less process to maintain and excel in Optimum Health and Wellness and Longevity!!!
(516) 674-4868 View (516) 674-4868
Photo of Maria Dello - Dellonutritionals-MariaDello, Nutritionist/Dietitian, CN
Dellonutritionals-MariaDello
Nutritionist/Dietitian, CN
Online Only
Maria Dello, Expert in her field & member of NANP owner of Dellonutritionals, located at 75 Plandome Road in Manhasset, NY. Ms. Dello was most recently seen on NBC Channel 4 News and frequently appears on television nutrition segments. She also previously co-hosted WOR 710AM Radio's, "The Heart Show," where she lectured about weight loss, diabetes, and family nutrition. Ms. Dello is dedicated to her passionate goal of teaching, guiding, and educating every individual who walks in her door or visits her website about the benefits of a salubrious lifestyle and diet and has been working in the practice for 20 years now. Maria Dello.
Maria Dello, Expert in her field & member of NANP owner of Dellonutritionals, located at 75 Plandome Road in Manhasset, NY. Ms. Dello was most recently seen on NBC Channel 4 News and frequently appears on television nutrition segments. She also previously co-hosted WOR 710AM Radio's, "The Heart Show," where she lectured about weight loss, diabetes, and family nutrition. Ms. Dello is dedicated to her passionate goal of teaching, guiding, and educating every individual who walks in her door or visits her website about the benefits of a salubrious lifestyle and diet and has been working in the practice for 20 years now. Maria Dello.
(516) 973-2985 View (516) 973-2985
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) 502-7972 View (631) 502-7972
Photo of Dan Wernikoff - Champion Athletes Sports Nutrition, Nutritionist/Dietitian, MICP, CSN
Champion Athletes Sports Nutrition
Nutritionist/Dietitian, MICP, CSN
Serves Area
Champion Athletes Sports Nutrition programs are some of the most successful programs in the country. Clients from all over the country have been coming to our offices or using our online program to help them achieve their goals. We offer a holistic and fully customized approach taking into consideration our clients food preferences, training habits, sport, position, body composition and level of physical and mental development.. Every one of our clients receives a personal evaluation and 24/7 support and coaching. Unlike most practices which cater to adult clients.
Champion Athletes Sports Nutrition programs are some of the most successful programs in the country. Clients from all over the country have been coming to our offices or using our online program to help them achieve their goals. We offer a holistic and fully customized approach taking into consideration our clients food preferences, training habits, sport, position, body composition and level of physical and mental development.. Every one of our clients receives a personal evaluation and 24/7 support and coaching. Unlike most practices which cater to adult clients.
(855) 705-4735 View (855) 705-4735
Photo of Rebecca Tolan Cruse, Nutritionist/Dietitian, MS, RDN, CDN
Rebecca Tolan Cruse
Nutritionist/Dietitian, MS, RDN, CDN
Massapequa, NY 11758
Rebecca is a Registered Dietitian with a passion for helping others develop a deeper, realistic understanding of nutrition concepts. Rebecca’s counseling style is compassionate and exploratory. She feels strongly there is no one-size-fits-all approach to nutrition, and finds most success through a collaborative approach. Rebecca practices from a weight-neutral and functional lens, always searching for the root causes of her patient’s symptoms.
Rebecca is a Registered Dietitian with a passion for helping others develop a deeper, realistic understanding of nutrition concepts. Rebecca’s counseling style is compassionate and exploratory. She feels strongly there is no one-size-fits-all approach to nutrition, and finds most success through a collaborative approach. Rebecca practices from a weight-neutral and functional lens, always searching for the root causes of her patient’s symptoms.
(914) 825-6699 View (914) 825-6699
Photo of Barbara Ann Grova, Nutritionist/Dietitian, INHC, AADP
Barbara Ann Grova
Nutritionist/Dietitian, INHC, AADP
East Setauket, NY 11733
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
Photo of Stacy Seslowsky - Heal From Food , Nutritionist/Dietitian, RD, LDN, MS
Heal From Food
Nutritionist/Dietitian, RD, LDN, MS
Serves Area
I know what it feels like to be frustrated & sad about your physical condition. One pill after another is not the answer. Through 20 years of education and experience in nutrition and functional medicine, I have learned how to find the root cause of imbalance and work together with patients using an online platform to transform and restore good health. Health & weight issues are most often related to gut, hormone, or immune imbalance. A uniquely designed food and lifestyle modification plan can & will change your health status. Do not lose hope. My process works for even the most challenging of cases.- Stacy Seslowsky, RD, LDN, MS
I know what it feels like to be frustrated & sad about your physical condition. One pill after another is not the answer. Through 20 years of education and experience in nutrition and functional medicine, I have learned how to find the root cause of imbalance and work together with patients using an online platform to transform and restore good health. Health & weight issues are most often related to gut, hormone, or immune imbalance. A uniquely designed food and lifestyle modification plan can & will change your health status. Do not lose hope. My process works for even the most challenging of cases.- Stacy Seslowsky, RD, LDN, MS
(904) 899-4955 View (904) 899-4955
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 Jessica Jaeger, Nutritionist/Dietitian, MS, RD, LD
Jessica Jaeger
Nutritionist/Dietitian, MS, RD, LD
2 Endorsed
Online Only
Are you ready to find joy in food again? Jessica helps clients struggling with food, exercise, and weight. If food preoccupies your thoughts, she can help. Jessica combines her expertise in disordered eating research with practical, real-life experience to guide her clients toward recovery.
Are you ready to find joy in food again? Jessica helps clients struggling with food, exercise, and weight. If food preoccupies your thoughts, she can help. Jessica combines her expertise in disordered eating research with practical, real-life experience to guide her clients toward recovery.
(516) 703-4921 View (516) 703-4921
Photo of Madeline Basler - Real You Nutrition, Nutritionist/Dietitian, MS, RDN, CDN
Real You Nutrition
Nutritionist/Dietitian, MS, RDN, CDN
Serves Area
Real You Nutrition is a nutritional counseling practice that specializes in intuitive eating, eating disorders, chronic illness, and women’s health. We offer a non-diet treatment plan that helps people establish healthy eating patterns that align with their values. We believe by nurturing your physical, mental and emotional well-being, you can become the best REAL version of yourself, reduce your risk of chronic disease, have more energy, and feel good about yourself. We offer extensive gastrointestinal dysfunction and hormonal testing to get to the root causes and personalize and customize a protocol to address these needs.
Real You Nutrition is a nutritional counseling practice that specializes in intuitive eating, eating disorders, chronic illness, and women’s health. We offer a non-diet treatment plan that helps people establish healthy eating patterns that align with their values. We believe by nurturing your physical, mental and emotional well-being, you can become the best REAL version of yourself, reduce your risk of chronic disease, have more energy, and feel good about yourself. We offer extensive gastrointestinal dysfunction and hormonal testing to get to the root causes and personalize and customize a protocol to address these needs.
(516) 784-4052 View (516) 784-4052
Photo of Lisa Stollman, Nutritionist/Dietitian, MA, RDN, CDCES, CDN, CLT
Lisa Stollman
Nutritionist/Dietitian, MA, RDN, CDCES, CDN, CLT
1 Endorsed
Serves Area
Welcome! I’m a registered dietitian nutritionist (RDN) specializing in weight management, diabetes, inflammation, and gastrointestinal health. I work with individuals who are ready to feel better in their bodies, gain clarity around food choices, and build habits that actually last. My approach is warm, realistic, and science-based—no restrictive diets or shame-based strategies here. Whether you're dealing with a recent diagnosis, chronic symptoms, or simply want to eat in a way that supports your lifestyle, I’m here to help you. Are you ready feel great and enjoy better health? Call me at 631/364-0366 to schedule an appointment.
Welcome! I’m a registered dietitian nutritionist (RDN) specializing in weight management, diabetes, inflammation, and gastrointestinal health. I work with individuals who are ready to feel better in their bodies, gain clarity around food choices, and build habits that actually last. My approach is warm, realistic, and science-based—no restrictive diets or shame-based strategies here. Whether you're dealing with a recent diagnosis, chronic symptoms, or simply want to eat in a way that supports your lifestyle, I’m here to help you. Are you ready feel great and enjoy better health? Call me at 631/364-0366 to schedule an appointment.
(631) 364-0366 View (631) 364-0366

Online Dietitians and Nutritionists

Photo of Linda Arpino, Nutritionist/Dietitian, MA, RD, CDN, FAND
Linda Arpino
Nutritionist/Dietitian, MA, RD, CDN, FAND
Rye Brook, NY 10573
The Life Focus Nutrition Centers are a comprehensive nutrition practice specializing in individual adults, teen and children nutrition. Expertise in weight management, diabetes, cholesterol and cardiac management, cancer prevention, gastrointestinal diseases (food sensitivities,IBS, crohn's, colitis, sports nutrition,and pregnancy related issues. Additionally, for childhood nutrition (autism, failure to thrive, picky eaters, and food allergies guidelines are available . Our focus is to educate diverse cultures based on food prefereces. Healthy food choices for you and your planet!
The Life Focus Nutrition Centers are a comprehensive nutrition practice specializing in individual adults, teen and children nutrition. Expertise in weight management, diabetes, cholesterol and cardiac management, cancer prevention, gastrointestinal diseases (food sensitivities,IBS, crohn's, colitis, sports nutrition,and pregnancy related issues. Additionally, for childhood nutrition (autism, failure to thrive, picky eaters, and food allergies guidelines are available . Our focus is to educate diverse cultures based on food prefereces. Healthy food choices for you and your planet!
(914) 758-0789 View (914) 758-0789
Photo of Abby Walker, Nutritionist/Dietitian, MS, RDN, CDN, CPT
Abby Walker
Nutritionist/Dietitian, MS, RDN, CDN, CPT
West Hempstead, NY 11552
My heart is in helping people just like you break free from the discomfort, frustration, and uncertainty that come with health struggles. I know how exhausting it can be to feel trapped in a cycle of pain, bloating, digestive distress, inflammation, or food sensitivities. I’m here to help you uncover the root causes of your symptoms, not just manage them, so you can heal from the inside out. I create personalized wellness plans that support your body’s natural ability to restore balance. My goal is to help you feel at home in your body again. strong, energized, confident, and free to live the life you deserve.
My heart is in helping people just like you break free from the discomfort, frustration, and uncertainty that come with health struggles. I know how exhausting it can be to feel trapped in a cycle of pain, bloating, digestive distress, inflammation, or food sensitivities. I’m here to help you uncover the root causes of your symptoms, not just manage them, so you can heal from the inside out. I create personalized wellness plans that support your body’s natural ability to restore balance. My goal is to help you feel at home in your body again. strong, energized, confident, and free to live the life you deserve.
(516) 969-8564 View (516) 969-8564
Eva Lewandowski Hoffman
Nutritionist/Dietitian, MS, RDN
Online Only
Clinton Street Nutrition is a private nutrition practice located in Brooklyn, NY, founded by Eva Lewandowski Hoffman, MS, RDN, CDN. I help people with chronic GI symptoms and disordered eating find peace in their gut and on their plate. I’m a registered dietitian with advanced training in eating disorders, intuitive eating, and digestive health. I specialize in helping clients who feel stuck between symptom relief and food freedom.
Clinton Street Nutrition is a private nutrition practice located in Brooklyn, NY, founded by Eva Lewandowski Hoffman, MS, RDN, CDN. I help people with chronic GI symptoms and disordered eating find peace in their gut and on their plate. I’m a registered dietitian with advanced training in eating disorders, intuitive eating, and digestive health. I specialize in helping clients who feel stuck between symptom relief and food freedom.
(929) 708-3443 View (929) 708-3443
Photo of Rebecca Alcosser, Nutritionist/Dietitian, RD, CDN, CEDS
Rebecca Alcosser
Nutritionist/Dietitian, RD, CDN, CEDS
New York, NY 10007
Rebecca's ideal clients are those struggling with eating disorders—Anorexia, Bulimia, Binge Eating, Orthorexia, or ARFID—as well as dancers or athletes navigating performance pressure. They come seeking relief from food rules, guilt, and body image struggles, or needing support fueling demanding training. Rebecca meets each client with a compassionate, weight-inclusive, all-foods-fit approach—creating a safe space to heal their relationship with food, rebuild body trust, and develop sustainable nourishment habits. For performers, she integrates performance nutrition to support energy and recovery without compromising well-being.
Rebecca's ideal clients are those struggling with eating disorders—Anorexia, Bulimia, Binge Eating, Orthorexia, or ARFID—as well as dancers or athletes navigating performance pressure. They come seeking relief from food rules, guilt, and body image struggles, or needing support fueling demanding training. Rebecca meets each client with a compassionate, weight-inclusive, all-foods-fit approach—creating a safe space to heal their relationship with food, rebuild body trust, and develop sustainable nourishment habits. For performers, she integrates performance nutrition to support energy and recovery without compromising well-being.
(332) 264-5969 View (332) 264-5969
Photo of Trisha Shea, Nutritionist/Dietitian, MS, RDN, CDN
Trisha Shea
Nutritionist/Dietitian, MS, RDN, CDN
1 Endorsed
Online Only
You're living with a chronic condition like heart disease or kidney disease, and you're tired of generic advice that doesn't fit your reality. Your goal is about creating clinically backed, specialized evidence that results in progress that sticks. You're looking for someone who understands that managing chronic conditions is about more than just following a meal plan; it's about creating habits that work long-term while still living a full life. You deserve support from someone who gets that every person's journey is different and that sustainable change happens one realistic step at a time.
You're living with a chronic condition like heart disease or kidney disease, and you're tired of generic advice that doesn't fit your reality. Your goal is about creating clinically backed, specialized evidence that results in progress that sticks. You're looking for someone who understands that managing chronic conditions is about more than just following a meal plan; it's about creating habits that work long-term while still living a full life. You deserve support from someone who gets that every person's journey is different and that sustainable change happens one realistic step at a time.
(929) 493-4238 View (929) 493-4238
Food Allergy Nutritionists and Dietitians
What does it mean to have a food allergy?
A food allergy occurs when the body's immune system mistakenly identifies a specific food as a threat and mounts an immune response against it. The severity of food allergies can vary widely, ranging from mild reactions, such as hives or stomach discomfort, to severe cases like anaphylaxis. Anaphylaxis is a life-threatening condition characterized by a whole-body immune response that can cause symptoms such as swelling of the throat and difficulty breathing. While mild symptoms often resolve on their own, severe reactions may require emergency medical intervention. In such cases, epinephrine is commonly administered to relax the airway muscles and facilitate breathing.

Can a food allergy be cured?
There is little evidence to suggest that food allergies can be cured, and those with severe allergies are often guided to always take significant precaution when consuming foods that could potentially contain or be cross-contaminated with a major allergen. That said, food allergies are more common in children, and many allergies are actually outgrown as a child ages and develops a more robust immune system. Recent research has also suggested that exposure to certain common allergen foods, such as peanuts, early in childhood can reduce the risk the child goes on to develop an allergy to that food in their adult life.

How do I know if I have a food allergy?
Individuals can identify a food allergy by recognizing symptoms that appear after consuming a specific food. Common symptoms of food allergies include hives, itchy skin or mouth, dizziness, nausea, vomiting, stomach pain, and difficulty breathing. These symptoms usually occur immediately after eating the allergenic food, although in rare cases, they can develop more slowly.

How can a dietitian help someone with a food allergy?
Dietitians play a crucial role in assisting individuals with food allergies, especially those with multiple allergies that complicate their ability to maintain a balanced diet. They can help ensure that clients receive all essential nutrients while avoiding foods that could trigger severe allergic reactions. Dietitians are also knowledgeable about which foods pose a high risk of cross-contamination and can advise on strategies to prevent accidental exposure. Additionally, dietitians can help distinguish between food allergies and food intolerances—two related but distinct conditions. Food allergies involve an immune response, while intolerances typically involve digestive issues. Accurate diagnosis of these conditions enables clients to make informed decisions about symptom management and dietary choices.