516-466-4279• Email Nancy
NYS Certified Dietitian-Nutritionist (CDN), Registered Dietitian Nutritionist (RDN), MS, CNS • Long Island, Queens, New York & Online
  • AboutAbout Nancy Nancy Mazarin is a Registered Dietitian (RD) and Certified Nutritional Specialist (CNS) with a Master’s Degree in Nutrition from Columbia University. She is also a Certified Dietitian Nutritionist (CDN) in the State of New York. Nancy’s career path has always been in the science field, starting as a researcher at the Albert Einstein College of Medicine. Her love of science, combined with her interest in nutrition, eventually led her to pursue her Master’s Degree. In her endeavors, Nancy has worked as a medical nutrition consultant for hospitals and physicians, taught college-level courses and reviewed scholarly nutrition education articles. Nancy has worked with hundreds of patients, helping them to understand the ever-changing science of nutrition and create programs that are tailored to their own health goals. Included in these individualized plans are education, meal planning and behavior modification. As a food and nutrition expert, Nancy translates the science of nutrition into practical everyday solutions. DEGREES B.A. with a major in biology M.S. in nutrition from Columbia University R.D. from the American Dietetic Association CNS: Certified Nutrition Specialist (American College of Nutrition) CDN: Certified Dietitian Nutritionist (New York State certification) MEMBERSHIPS American Dietetic Association Diabetes Care and Education practice group…
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  • Medical Nutrition TherapyMedical Nutrition Therapy Food is the fuel for your body and the cornerstone of your health. When you face medical issues that challenge your well-being, proper nutrition can be a powerful tool to restore your health. Medical Nutrition Therapy is an essential part of your comprehensive health care, enabling you to optimize health and well being. Patients with medical issues are usually referred to Nancy by physicians or hospitals. Nancy works with your doctor using an integrative approach to understand your medical needs. She translates research into practice and develops an intervention plan. At the initial consultation, Nancy evaluates your medical history, diet, habits, and lifestyle to determine when, where and how to modify your nutrition plan to achieve lifelong health. Your customized eating program will include: • Nutrition Education • A personalized meal plan that incorporates simplicity and flexibility • recommendations for specific foods and patterns of food choices to match your unique health needs Some of the medical issues Nancy has addressed through Medical Nutrition Therapy include: GASTROINTESTINAL DISORDERS: Crohn’s and Colitis; Irritable Nowel Syndrome; Diarrhea or Constipation; Celiac Disease/Gluten Sensitivity; GERD/Heartburn; Diverticular disease CARDIOVASCULAR/HEART HEALTH: Cholesterol; Triglycerides; Hypertension; Congestive Heart Failure ENDOCRINOLOGY: Diabetes Mellitus; Pre Diabetes; Hypoglycemia; Fatty…
    • Diabetes & Endocrine Issues
    • Cardiovascular/Heart Health
    • Fatty Liver Disease
    • Food Allergy – Sensitivity – Intolerance
    • Gastrointestinal/Digestive Disorders
    • SIBO & IBO
    • Renal Disease
    • Binge Eating
    • Geriatrics
  • Weight ManagementWeight Management Therapy Reaching and maintaining a healthy weight is a challenge for many people. One-size-fits-all programs are unrealistic, rarely result in weight maintenance and can be detrimental to good health. Success comes from sustained changes in eating that become incorporated into your daily routine. Your initial consultation with Nancy will allow her to: Assess your dietary needs and current eating practices. Understand your home, work and social environment. Identify what areas need improvement and where good choices and habits already exist. You will work together to develop a personalized plan with specific foods and patterns of food choices. You will be given the tools to promote positive behavior changes. *You do not need to eating special foods to lose weight *You do not need to be restrictive and deprived to lose weight *You do not need to be perfect to lose weight *You do not need to eat differently from your family or friends to lose weight Healthier food choices, blended with behavior changes and sound nutrition information will guide you to your optimal weight and health. Your action plan will: Set realistic and sustainable goals Analyze your dietary needs Get to the root of your food issues Provide…
    • Weight Gain
    • Weight Loss
  • Specialty Diets
    • Anti Inflammatory Diet
    • Dairy Free – Lactose Intolerance
    • Elimination Diet
    • FODMAP
    • Celiac / Gluten Free Diet
    • Plant Based Plans
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  • Homecontact info is 935 Northern Boulevard; Suite 301; Great Neck, NY 11021 516-466-9087 nmeatrite@mazarinrd.com Contact Info-On every page This will be on every page in a sidebar Nancy Mazarin, MS, RD, CDN Medical Nutrition Consultant like this on each page as a side bar   Sidebar widget: Nancy Mazarin is a Nutritional Consultant with a private practice in Great Neck, NY. With more than thirty years experience, Nancy employs practical nutritional tools to create long-term solutions. With her help, you can build a personalized program to improve your health, enhance your quality of life, achieve optimal weight goals, and address medical issues. • Are you struggling with weight issues? • Do you have a history of weight cycling? • Have you been diagnosed with medical conditions such as Diabetes, Cardiovascular disease, Hypertension, Reflux or Irritable Bowel Syndrome? • Has your energy and quality of life diminished? • Are you ready to feel better and become the best YOU? Nancy Mazarin is a Nutrition Consultant with a private practice in Great Neck, NY. She has practical every day solutions from over 30 years of working with doctors, patients and a full spectrum of medical conditions. She can help you (in bold): Pinpoint…
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Food Choices
Blog, Weight Loss

Weight Loss Simplified, Tips on How to Lose Weight from Long Island Registered Dietitian

Weight loss misinformation misleads! Food Fads and Fad Diets are defined as unusual diets and eating patterns that promote short-term weight loss, with no concern for long-term weight maintenance or overall health. These diets are often…
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February 15, 2022
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Slow Eating
Blog, Health & Nutrition, Weight Loss

Nutritionist Tips on How to Eat Less and Lose Weight, Behaviors to Support Sustainable Weight Loss and Wellness

Attaining and maintaining your optimal weight is a path toward disease prevention and health promotion. And portion control is an essential component of weight management.  Changing your thoughts can change the way you eat.  As a registered…
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February 1, 2022
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Nerve Pain
Antiinflammatory Diet, Blog

Long Island REGISTERED DIETITIAN EXPLAINS HOW NERVE PAIN CAN BE RELIEVED WITH NUTRITION: Tips to Support Nerve Function & Anti-inflammatory Diet Plans

What do your nerves do?  They send directions and information back and forth between your brain and every part of your body – allowing you to breathe,  see, feel, hear, move, and in general, live.  The question is whether food choices…
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January 15, 2022
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Slow Eating Tips
Blog, Weight Loss, Weight Maintenance

Long Island Certified Nutritionist Strategies to Slow Down Eating: Develop Healthy Eating Behaviors for Weight Loss, Weight Management, and Wellness

It’s the New Year, and whether you want to lose weight, improve wellness, manage a chronic condition, improve blood sugar levels and more, it’s not only what you eat that matters but how.  As a holistic nutritionist with over 30…
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January 1, 2022
https://mazarinrd.com/wp-content/uploads/2022/01/Jan1_SlowEating.jpg 533 800 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2022-01-01 15:24:462024-05-28 15:49:09Long Island Certified Nutritionist Strategies to Slow Down Eating: Develop Healthy Eating Behaviors for Weight Loss, Weight Management, and Wellness
Frozen Vegetables
Blog, Health & Nutrition

Long Island Registered Dietitian Discusses Fresh & Frozen Fruits and Vegetables: Debunking Misinformation About Frozen Foods

A balanced and diversified healthful food plan is important whether you are trying to lose weight, are living with a chronic illness, or want to promote health and prevent disease.  We all know that your shopping cart should be loaded with…
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December 15, 2021
https://mazarinrd.com/wp-content/uploads/2021/11/FrozenFoods_Dec15-804682242.jpg 667 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2021-12-15 16:06:192021-11-30 16:09:17Long Island Registered Dietitian Discusses Fresh & Frozen Fruits and Vegetables: Debunking Misinformation About Frozen Foods
Holiday Eating
Blog, Weight Maintenance

10 Tips for Healthy Holiday Eating from Long Island Registered Dietitian: Enjoy Your Favorites and Maintain a Healthy Weight

Among the many pleasures of the holidays are the foods and festivities of the season. As a registered dietitian nutritionist, it’s not uncommon for my patients to ask how they can enjoy the holidays and still manage to maintain a healthful…
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December 1, 2021
https://mazarinrd.com/wp-content/uploads/2021/11/HolidayEating_Dec1-1294915119.jpg 626 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2021-12-01 19:46:482024-05-28 15:49:3610 Tips for Healthy Holiday Eating from Long Island Registered Dietitian: Enjoy Your Favorites and Maintain a Healthy Weight
Gut Brain Axis
Blog, Gastrointestinal - Digestive Disorders

Long Island Registered Dietitian Explains the Gut-Brain Connection: Prevent Disease and Improve Mental Health with Good Nutrition

As a Registered Dietitian who practices holistic nutrition therapy, I find that most people think their bodies are divided at the neck without any connection between the brain and the body.  Not so. Researchers have found that a nervous system…
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November 15, 2021
https://mazarinrd.com/wp-content/uploads/2021/11/GutBrain_Nov15_609531952.jpg 1000 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2021-11-15 16:00:532024-05-28 15:49:46Long Island Registered Dietitian Explains the Gut-Brain Connection: Prevent Disease and Improve Mental Health with Good Nutrition
Unhealthy Snacks
Blog, Health & Nutrition, Weight Loss

Long Island Dietitian Tips to Healthy Snacking, Weight Loss and Maintenance: TO SNACK OR NOT TO SNACK – That Is the Question

It is well understood that snacking can be a significant factor in weight management and health, but the definition is inconsistent. A clear understanding is needed to prevent unwanted weight gain or to promote weight loss. The simplest…
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November 2, 2021
https://mazarinrd.com/wp-content/uploads/2021/11/Snacks_Nov-1-2021.jpg 669 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2021-11-02 14:26:522021-11-29 15:22:37Long Island Dietitian Tips to Healthy Snacking, Weight Loss and Maintenance: TO SNACK OR NOT TO SNACK – That Is the Question
Diabetes Prevention
Blog, Diabetes and Endocrine Issues, Health & Nutrition, Weight Loss

Prevent Diabetes with Nutrition Interventions from Long Island Registered Dietitian & NYS Certified Nutritionist: The Risk of Developing Diabetes has Increased in Younger & Younger Individuals

It is estimated that 10% of all U.S. adults have diabetes, while 34.5% have prediabetes.  Being overweight or obese is the strongest risk factor for developing prediabetes and then full-blown diabetes.  According to the CDC, additional…
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October 15, 2021
https://mazarinrd.com/wp-content/uploads/2021/10/DiabetesExercise_Oct15-2021-1.jpg 667 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2021-10-15 10:14:532021-11-29 15:21:24Prevent Diabetes with Nutrition Interventions from Long Island Registered Dietitian & NYS Certified Nutritionist: The Risk of Developing Diabetes has Increased in Younger & Younger Individuals
Senior Couple Eating Meal Together In Kitchen
Blog, Cardiovascular - Heart Health, Health & Nutrition

Tips to Avoid Heart Disease from Long Island Certified Nutritionist: Reduce Risk of Heart Attack and Stroke with Diet Plan

WHAT SHOULD YOU EAT TO AVOID HEART DISEASE? According to the CDC, “Heart disease is the leading cause of death for men, women, and people of most racial and ethnic groups in the United States.” Oftentimes, people don’t even realize…
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October 1, 2021
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Blog, Health & Nutrition, Weight Loss

Long Island Certified Nutritionist Recommendations to Promote Health and Maintain an Optimal Weight During the Menopausal Years

  As a Registered Dietitian Nutritionist, I work with individuals of all ages to develop personalized diet plans to meet changing nutritional needs, translating research into practice. Whether you’re struggling to attain or maintain…
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September 14, 2021
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Menopause
Blog, Health & Nutrition, Weight Loss

Causes of Weight Gain After Menopause: Long Island Registered Dietitian Works with Women to Reassess Health Goals and Nutritional Needs

  Though menopause is the end of the reproductive phase of a woman’s life, it is an opportunity to reassess their health goals and nutritional needs.  As a certified nutritionist, I work with women who are pre, peri and post-menopausal,…
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September 1, 2021
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Nancy Mazarin - Certified Nutritionist & Registered Dietitian MS, RDN, CDN, CNS
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Amy Pedolsky
17:02 26 Dec 22
Over the past six months that I have been seeing Nacny, she has been very helpful in hepling me lose 31 pounds. She understands very aspect of what I needed and how to accommidate them properly. With Nancy's help I have been able to change my lifestyle, eat healthier and change and treat my medical conditions very differently and for the best. I would highly reccommanded Nancy to anyone that has tried diets before and has not succeded and who has a lot of different medical conditions that make it difficult to know what to eat and what not to eat.
Michael Maino
21:11 17 Dec 22
I was hesitant at first to start seeing a nutritionist. I was very comfortable with my poor eating habits despite being upset about my weight; however I knew I needed to make a change.

Nancy was very understanding from the start. Before meeting with Nancy, I had been in a constant cycle of over-restricting myself to lose weight rapidly, followed by binge eating and gaining it all back plus some more.

Over the past year and a half, Nancy has helped me discover normal eating. She helped me understand my hunger and my fullness in addition to helping me choose better food options.

Nancy is very dedicated to working with you and helping you achieve your goals. She doesn’t just help you reach your goals — she helps you change your perspective of food and eating for the better. What you learn with Nancy is not temporary — you will carry it with you and practice it throughout your life.

I have lost almost 70 pounds since first meeting with Nancy and continuing on my journey. I highly recommend working with her.

Nancy, thank you for all of your help!
Carol Vogt
21:38 12 Dec 22
Although I was unlucky when I developed some health issues, I was very lucky to find Nancy Mazarin, a skilled, intelligent, caring nutritionist. I saw lots of doctors but she was the one who came up with the diagnosis that finally led to my improved health. She was always available when I had questions and was even willing to meet with me one weekend when I was struggling.
Bonnie Eisler
00:22 03 Dec 22
Nancy has been wonderful to work with. She is extremely knowledgeable about nutrition, and very intuitive in identifying and removing roadblocks her clients may be experiencing on their way to achieving their goals. Nancy is extremely organized and promptly keeps her appointments. I highly recommend her!
richard markx
02:55 11 Oct 22
Absolutely knowledgeable compassionate and very personable!
Anyone wishing to improve their health through nutrition and education will find Nancy Mazarin incredibly helpful Thank you for all your help Nancy!
  • Holistic
  • Medical Nutrition Therapy
  • Cardiometabolic
  • Diabetes
  • Cardiovascular / Heart Health
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  • Liver Disease/Fatty Liver
  • Gastrointestinal /Digestive disorders
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  • Inflammatory Bowel Disease
  • Celiac Disease/Gluten Free Diets
  • SIBO
  • Diarrhea/Constipation
  • GERD
  • FODMAP Diets
  • Elimination Diets
  • Dairy or Lactose free
  • Food Allergy / Sensitivity / Intolerance
  • Anti-Inflammatory Plans
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  • Plant Based / Vegan / Vegetarian
  • Weight Management
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  • Weight Gain
  • Disordered Eating / Dysfunctional Eating
  • Binge Eating Disorder
  • Geriatrics/Elderly

© Copyright | All Rights Reserved. | Nancy Mazarin NYS Certified Dietitian Nutritionist (CDN) & Registered Dietitian Nutritionist (RDN) on Long Island, Queens, New York & Online
11 Glenwood Drive Great Neck, NY 11021 United States - 516-466-4279
Works with patients from: Nassau County, Great Neck, Suffolk County, Queens, North Shore, Locust Valley, Port Washington, Glen Cove, Oyster Bay, Cold Spring Harbor, Huntington, Manhasset, Brookville, Syosset, Woodbury, Roslyn, Hicksville, East Hills, Long Island
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