Nancy Mazarin, MS, RDN, CDN
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Nancy Mazarin, MS, RDN, CDN
Nancy Mazarin is a nutrition consultant with a private practice in Great Neck, New York. She is a New York State certified nutritionist and registered dietitian with a master's degree from Columbia University. Her focus is on health, wellness, and sustainable lifestyle choices. With thirty years of experience, Nancy employs practical nutritional tools to create long-term solutions while working closely with health professionals and patients on a full spectrum of medical conditions and nutritional needs.
Services
Holistic nutrition may seem like the catchphrase of the last few years, but it's simply a common-sense way to healthy living. The philosophy of holistic nutrition is that one's health is the result of a complex interplay between the physical, mental, and emotional components, therefore it is necessary to approach health and healing from a whole-person perspective.
Finding the right nutrition plan can be challenging, especially when you're not sure who to reach out to for help. The services advertised by nutritionists and dietitians may be similar, but their expertise and experience can differ greatly. A dietitian (also referred to as a Registered Dietitian Nutritionist - RDN) is a board-certified food and nutrition expert.
Food provides the fuel for your body and the nutrients for your health. When you face medical issues, an injury or conditions that challenge your well-being, proper nutrition can be a powerful tool to restore your health. Patients with medical conditions and their associated symptoms are often referred to Nancy by physicians and health care professionals.
Taking charge of your health begins here. Nutrition is the cornerstone of treatment for diabetes (pre-diabetes), hypoglycemia, a fatty liver, and metabolic syndrome.

Whether you have been diagnosed recently, have lived with your medical condition for many years, or are a caregiver helping a loved one, an understanding of science based nutrition therapy and the development of a personalized program are the tools needed for disease prevention and health promotion, empowering you to make the changes to improve outcome.
Cardiovascular disease (CVD) is the leading cause of death in Western countries. With the rising incidence over the last 25 years, intervention has become a public health priority. Evidence shows the effectiveness of healthy dietary patterns and lifestyles for the prevention of CVD and cardiovascular events.
Reviews (10)
Nancy Greengrass
Nancy Greengrass
Dec 28, 2021
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I have consulted with Nancy Mazarin off and on for the last 10 years with a variety of dietary issues ranging from weight loss to how to navigate diet with a chronic condition. . I have not only found her to be very knowledgeable and always professional, but an extremely caring and patient health care provider. She always works very hard to ensure your success and better health!
Lawrence Pinsky
Lawrence Pinsky
Oct 03, 2021
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I have worked with Nancy for several years now. She has helped me with reflux issues, keeping my A1c down, and weight loss. I have experienced excellent results from working with her.
She is a fountain of knowledge and shares it in any easy to understand manner. She is a true pro.
I highly recommend Nancy to anyone needing a nutritionist.
Janet Peters
Janet Peters
May 26, 2021
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Nancy is a concerned nutritionist who has given me many techniques for better, healthy eating habits. She follows through with all promised handouts and materials. I strongly recommend Nancy.
Karen Schneiderman
Karen Schneiderman
May 19, 2021
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I met Nancy around 37 years ago. She saved my quality of life!! I was experiencing gastrointestinal attacks constantly and couldn’t keep anything in. I told my Gastroenterologist that I felt that I needed to see a nutritionist. I walked into Nancy’s office and my life changed. She said ,”tell me about yourself.” I explained that I had multiple food allergies as a child and was allergic to milk as a baby. She responded,” stop eating it”. I stopped all dairy and we proceeded with an elimination diet to see what else bothered me. I slowly was able to come off the medications that had been
Mary DiDio
Mary DiDio
Feb 21, 2021
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Nancy was extremely professional, prompt and caring. She was able to help my husband's gastric issues that he suffered many years with by diligence and persistence and thinking out of the box with minimal supplementation and realistic alternative food choices for his age and lifestyle. We were especially appreciative that she consulted with his Gastric Doctor to complete my husband's health history in order to have a greater and more complete picture of his health history. Would highly recommend.
Marilyn Seaberg
Marilyn Seaberg
Dec 18, 2020
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My husband and I have both gone to Nancy Mazarin for nutritional guidance. We found her to be extremely knowledgable and professional. She has great strategies for healthy eating, which she customized to our individual needs. Her practical approach has enabled us to maintain our weight even after we completed our time with her. Nancy is very dedicated and is always willing to go the extra mile on behalf of her clients. Indeed, long after I finished my sessions with her, I emailed her a couple of questions. She followed up with a complimentary phone call to discuss my concerns. I would highly recommend
Mollie Sugarman
Mollie Sugarman
Oct 08, 2020
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Speaking both personally and as a medical professional, Nancy is extraordinary. She has vast knowledge, is extremely committed to your wellness, and especially responsive. There is an abundance of information available on-line which is overwhelming and incorrect. Nancy has clarified specific needs and has been instrumental in bringing me a better quality of life. I am grateful for her expertise.
Barbara Mazzei
Barbara Mazzei
Sep 30, 2020
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I have worked with Nancy Mazarin regarding diet and nutrition issues for some time. Nancy is very knowledgeable, detail oriented in her advice and is great with follow up. I have experienced positive results as a result of her guidance and enthusiastically recommend her.
Jenna Kavaler
Jenna Kavaler
Sep 08, 2020
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Nancy is amazing! I came to her to try and solve stomach issues that I have been struggling with for years. No other doctor or medication has been able to help me and I saw results immediately after seeing Nancy for the first time. She is extraordinarily knowledgeable and puts great time and effort into all of her patients.
Lori Rothberg
Lori Rothberg
Jun 19, 2020
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I’ve worked with Nancy on and off over the last 23 years. I started seeing her after my first child was born and then I saw her again after my other 2 kids were born. She taught me a lot and helped me to lose about 30lbs each time. Because she did such a wonderful job with me, as each of my kids needed help with dietary issues, I brought them to see her. She has been so helpful to my whole family. She explains things well and really cares about the well being of her patients. I would highly recommend her.