Get Ready for a Healthier Life!

Nancy Mazarin
Certified Nutritionist & Registered Dietitian
Long Island, Queens, New York & Online MS, RDN, CDN, CNS

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.

Nancy works locally 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 and nationally with virtual online consultations.

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Your Health is Important

Food provides the fuel for your body and the nutrients for your health. Nancy provides personalized nutrition counseling which is rooted in the concept that one size never fits all. Her diet and lifestyle recommendations focus on optimizing health and disease prevention.

When you face medical issues such as diabetes, irritable bowel syndrome, conditions that challenge your physical and mental well-being or energy levels, diet is often the cornerstone of treatment, and proper nutrition is 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 in the Long Island, Queens and Greater New York. Nancy works with your doctor using an integrative approach to understand your nutritional and medical needs. She translates research into practice and develops your individualized intervention program.

spoon and fork - 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

healthy food in 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

Consultation with Nancy

Working with a certified nutritionist and registered dietitian is an essential part of your comprehensive health care, enabling you to optimize health and well-being. During your initial nutrition consultation, Nancy will evaluate your current eating practices, as well as your home, work and social environment, and identify which areas need improvement and where good choices and habits already exist. Nancy‘s expertise will provide:

Nutrition Education
A personalized meal plan that incorporates simplicity, flexibility and sustainability
Recommendations for specific foods and pattern of food choices as well as behavior changes to match your unique health needs

Schedule a Consultation Today!

“Nancy has helped me with reflux issues, keeping my A1c down, and weight loss. She is a fountain of knowledge and shares it in an easy-to-understand manner. She is a true pro. I highly recommend Nancy to anyone needing a nutritionist.”

Lawrence Pinsky

“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!”

Nancy Greengrass

“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 prescribed and had stopped attacking. It was a true lifesaver.”

Karen Schneiderman

“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. Would highly recommend.”

Mary DiDio

“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.”

Janet Peters

“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.”

Jenna Kavaler

“Speaking both personally and as a medical professional, Nancy is extraordinary. She has vast knowledge, is extremely committed to your wellness, and is especially responsive. There is an abundance of information available online which is overwhelming and incorrect. Nancy has been instrumental in bringing me a better quality of life. I am grateful for her expertise.”

Mollie Sugarman

“My husband and I have both gone to Nancy Mazarin for nutritional guidance. We found her to be extremely knowledgeable 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. I would highly recommend Nancy Mazarin.”

Marilyn Seaberg

“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.”

Lori Rothberg

“It was very reassuring to find a professional with the experience and expertise needed to help me sort out my nutritional issues following an illness. Ms. Mazarin listened carefully to my medical history and digestive problems and created an individualized plan for helping me to gradually return to normal eating. She was open to consulting and collaborating with my physician and physical therapist. Her compassionate approach helped me through this process. “

Alicia Brackman Munves

“I was referred to Nancy Mazarin and she has been outstanding! I have learned so much about nutrition and myself! Thanks to Nancy I have learned tips and techniques for my specific needs that have changed my, health, diet, and lifestyle for the better. She is also able to understand today’s busy and changing worlds and find strategies that work for every situation. She is realistic, approachable, and open to thinking through issues and brainstorming on solutions that work for the individual.”

Stephanie Doyle

“Nancy is great! She has helped my mom with her diet and nutrition. She is patient and understanding.”

Sandeep Dhillon

“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.”

Barbara Mazzei

“Nancy is a wonderful person and resource. She gives sensible, practical advice regarding diet and nutrition, based on her knowledge and years of experience as a nutrition practitioner. You will learn strategies for eating in the real world – healthier food choices, sensible eating habits, finding best options on menus – helpful info to trying to control calorie consumption while living day to day in the real world. I recommend her highly and without reservation.”

Thomas Cunningham

“Nancy is amazing! She was able to help me see a connection between my emotions and food…something I just was not seeing on my own! She’s encouraging and honest and has great suggestions. I would, and have, recommended her to several friends!!”

Lorrie Chiarello

“Nancy is professional, knowledgeable, and well versed in a multitude of nutritional and dietary issues. I find her helpful and a delight to work with. Highly recommend Nancy.”

Jo-Ellen Hazan

“I’ve been a patient for several years. Nancy has helped me lose and maintain my weight loss. Unlike other programs I’ve tried, Nancy has helped me maintain sustainable eating habits. I highly recommend.”

William Cimbol

“Thank you Nancy for working with me – I’ve had such incredible results – my life is changed. I no longer have Lichen planus (the autoimmune disease I’ve had for 8 years).”

Amy Wolf

“Nancy has helped me to develop healthy eating habits, lose over 20 pounds, and maintain my weight over a period of years. I recommend her to help anyone create and maintain a healthy lifestyle.”

Ted Bier

“I’ve been working with Nancy for several months. She has been able to assess the issues and open my eyes to new ways of thinking about nutrition. Nancy is patient, knowledgeable, and professional. Would recommend highly.”

Al Crecco

“Nancy is very knowledgeable, supportive, and conscientious. I was able to make the necessary gradual changes in my diet through her suggestions and flexible approach. I would recommend her highly.”

Robert Epstein

“Wonderful! Super helpful and kind. Nancy is insightful and knowledgeable. Will leave you with lasting and healthy habits. Can’t say enough good things!!! Anyone would be lucky to be her client.”

Lauren

“Nancy’s knowledge, understanding, and individual approach helped me navigate a personal way to manage my weight long-term. I am grateful for her guidance.”

Patricia

Nancy Mazarin Certified Nutritionist & Registered Dietitian Long Island, Queens, New York & Online MS, RDN, CDN, CNS

Your Health is Important

Consultation with Nancy

Nancy Mazarin
Certified Nutritionist & Registered Dietitian
Long Island, Queens, New York & Online MS, RDN, CDN, CNS