516-466-4279• Email Nancy
Nancy Mazarin - Registered Dietitian Nutritionist (RDN)
NYS Certified Dietitian-Nutritionist (CDN)
Long Island, Queens, New York & Nationally 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…
    • About Nancy
    • Concierge Nutrition Counseling
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    • What is the difference between a dietitian and a nutritionist?
  • Holistic Nutritionist
  • 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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Healthy food in heart diet
Blog, Cardiovascular - Heart Health, Health & Nutrition

Improve Heart Health with a Diet Plan from a Long Island RDN: Ingredients of a Heart Healthy Diet

Hearts are an amazing muscle – beating about 100,000 times every day to keep us alive.  What you eat – or don’t eat, increases or decreases the risk of heart attack, stroke, and heart failure, as well as type 2 diabetes, hypertension,…
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July 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/07/Mazarin_July1.jpg 515 800 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-07-01 14:15:552023-07-10 14:16:15Improve Heart Health with a Diet Plan from a Long Island RDN: Ingredients of a Heart Healthy Diet
Blog, Cardiovascular - Heart Health, Health & Nutrition

Eating Patterns Recommendations for Healthy Aging from New York Dietitian Nutritionist: Dietary Recommendations for Seniors

In my last blog, I explained how important nutrition is for both prolonged life expectancy and decreased chronic, degenerative disease. Now you need to understand how and what to eat. Research has found that healthy dietary “patterns”,…
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June 1, 2023
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Group of senior friends smiling
Blog, Geriatrics

Do older adults have different nutrition needs than younger adults? New York Dietitian Nutrition Tips for Seniors

Just like children do not have the same nutrition needs as adults, older adults have different nutrition needs. And there is no definition for “older adults”.  In my practice I define it as over 60. Both the science and my observation…
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May 15, 2023
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inflammatory bowl syndrome
Blog, Gastrointestinal - Digestive Disorders

What you need to know about Food Additives and Inflammatory Bowel Disease: Improve Gut Health with Tips from New York Certified Dietitian Nutritionist

The incidence and prevalence of inflammatory bowel disease, which includes Crohn’s disease and colitis, has increased over the 21st century.  Though the exact cause is unclear, there appears to be an interaction between environmental…
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May 1, 2023
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Fiber types and benefits
Blog, Cardiovascular - Heart Health

Soluble Fiber – why it is so important, explained by a Long Island Registered Dietitian Nutritionist

  Fiber is a nutrient found in carbohydrates. Unlike other food components, such as fats, proteins, or carbohydrates, which your body breaks down and absorbs, fiber is that part of the plant that we cannot digest. Instead, it passes…
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April 15, 2023
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Pushing Pseudoscience
Blog, Health & Nutrition, Healthcare Professionals

Is Nutrition Junk science taking over social media? Asked and answered by a Long Island Registered Dietitian Nutritionist

People of all ages are increasingly getting their nutrition information from social media. Next people look to friends and family, then celebrities for nutrition advice and information. The result - misinformation and false news is spreading.…
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April 1, 2023
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Diabetes Tips
Blog, Diabetes and Endocrine Issues

New York State Certified Dietitian Nutritionist Explains How to attain diabetes remission with nutrition

In my last blog I explained diabetes remission. To Achieve this goal, you need to understand What To Eat.   Here are some tips from the Academy of Nutrition and Dietetics:  The evidence is clear that a whole food, plant forward,…
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March 15, 2023
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Reversing Diabetes
Blog, Diabetes and Endocrine Issues, Health & Nutrition

IS TYPE 2 DIABETES REVERSIBLE?  Answered by a New York State registered dietitian nutritionist

Not only can you prevent or delay prediabetes from progressing to type 2 diabetes, but Type 2 diabetes is reversible. As a RDN working with patients for over 30 years, I can provide you with dietary and behavioral strategies to sustain the…
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March 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/03/ReversingDiabetes_511476350.jpg 1411 2124 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-03-01 17:19:442023-03-04 17:19:53IS TYPE 2 DIABETES REVERSIBLE?  Answered by a New York State registered dietitian nutritionist
Still Hungry
Blog, Weight Loss

5 REASONS YOU’RE ALWAYS STARVING: Hunger management to reach weight loss goals, from a New York State certified dietitian nutritionist 

People often tell me they are “starving” all day.  The first question I ask is where in your body is the hunger signal/feeling coming from.  If it is from the stomach, then you are actually hungry. If it is not from the stomach, then…
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February 15, 2023
https://mazarinrd.com/wp-content/uploads/2023/03/Still-Hungry-1396727861.jpg 1024 1024 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-02-15 17:06:282024-05-28 15:42:475 REASONS YOU’RE ALWAYS STARVING: Hunger management to reach weight loss goals, from a New York State certified dietitian nutritionist 
Hungry Woman
Blog, Weight Loss

Why Are You Always STARVING? – Long Island Registered Dietitian Nutritionist Hunger Management & Weight Loss Tips

Many of my patients complain they are always starving. Assuming they are experiencing real hunger, the need for food that comes from the stomach, not head hunger or appetite, the desire for food, there are explanations and solutions. As…
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February 1, 2023
https://mazarinrd.com/wp-content/uploads/2023/02/AlwaysStarving_Feb-1-2023.jpg 1000 1000 Nancy Mazarin https://mazarinrd.com/wp-content/uploads/2025/03/NancyMazarin-2-1030x281.png Nancy Mazarin2023-02-01 16:22:352024-05-28 15:42:58Why Are You Always STARVING? – Long Island Registered Dietitian Nutritionist Hunger Management & Weight Loss Tips
Intermittent Fasting
Blog, Diabetes and Endocrine Issues, Health & Nutrition, Weight Loss

CAN INTERMITTANT FASTING REVERSE TYPE 2 DIABETES?  Long Island Certified Clinical Nutritionist Discusses Advantages of Time-Restricted Eating

In two of my recent blogs, I explained Chrononutrition and Circadian Rhythm (biological clock). The discussion was the related to the effectiveness at as strategy for weight loss. As important, if not more important, is the potential…
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January 16, 2023
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Inflammation
Antiinflammatory Diet, Blog

Reduce Chronic Inflammation with Diet: What you need to understand explained by a registered dietitian nutritionist

Inflammation is the body’s natural response to injury, irritations, or infections. When we see or feel the symptoms, redness, swelling, heat, pain, we want to get rid of the inflammation as soon as possible.  However, this type of acute…
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January 1, 2023
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Amy Pedolsky profile picture
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 profile picture
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 profile picture
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 profile picture
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 profile picture
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!
  • Concierge Nutritionist
  • Holistic
  • Medical Nutrition Therapy
  • Cardiometabolic
  • Diabetes
  • Cardiovascular / Heart Health
  • Renal / Kidney
  • Liver Disease/Fatty Liver
  • Gastrointestinal /Digestive disorders
  • Irritable Bowel Syndrome
  • 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
  • Auto Immune Disorders
  • Plant Based / Vegan / Vegetarian
  • Weight Management
  • Weight Loss
  • 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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