what is nexendo?
Nutrition
Exercise
Endocrine
We aim to tackle health through the neXendo wellness approach, by combining nutrition, exercise, and endocrinology strategies into one interdisciplinary and evidence-based approach to optimize health.
Why people come here
A doctor, a dietitian, and a trainer who share one set of your numbers
Most people are running two appointments and a gym membership that never talk to each other. Here is what sits under one roof at neXendo instead.
Ten rows. Scroll inside the table to read them all.
| What you get | neXendo Wellness | Standard doctor visit | Your gym |
|---|---|---|---|
| Hormone and metabolic lab work | neXendo WellnessYesOrdered and read by an endocrinologist before any plan is written. | Standard doctor visitSometimesDepends on the visit and the reason you came in. | Your gymNoNot offered. |
| Resting metabolic rate testing | neXendo WellnessYesMeasured directly, so your calorie number comes from a test, not a formula. | Standard doctor visitNoNot part of a standard visit. | Your gymSometimesSome gyms offer it, without clinical review of the result. |
| Body composition analysis | neXendo WellnessYesBody fat, muscle mass, and how both move over time. | Standard doctor visitSometimesUsually weight and BMI only. | Your gymSometimesOften a handheld device or a smart scale. |
| Bone density scanning | neXendo WellnessYesDEXA on site in Long Island City, read in context with your labs. | Standard doctor visitSometimesReferred out, and the result often comes back without a plan attached. | Your gymNoNot offered. |
| A written plan built from your own test results | neXendo WellnessYesNutrition and training are written after the numbers come back. | Standard doctor visitSometimesAdvice in the room, rarely a document you leave with. | Your gymSometimesA workout plan, built without any of your test results. |
| Registered dietitians who work across disease states | neXendo WellnessYesOn staff, and reading the same results your doctor is. | Standard doctor visitSometimesA referral out, if the practice has someone to refer to. | Your gymNoNutrition coaching is not the same credential. |
| Supervised exercise | neXendo WellnessYesLed by our medical fitness trainers, working with your doctor. | Standard doctor visitNoYou are told to exercise, not shown how. | Your gymYesNo medical data behind the session. |
| Care for chronic conditions | neXendo WellnessYesDiabetes, thyroid, bone health, PCOS and menopause, all in one place. | Standard doctor visitYesThe medical side, with nutrition and exercise handled elsewhere. | Your gymNoNot a clinical setting. |
| Retesting, with the plan adjusted as your numbers move | neXendo WellnessYesThe plan changes when the data does. | Standard doctor visitSometimesAt the next annual, if you book one. | Your gymNoNothing clinical is being tracked. |
| Insurance, FSA and HSA, or self-pay | neXendo WellnessYesWe verify your coverage before your first visit, so you know the cost going in. | Standard doctor visitYesCovered, for the medical portion. | Your gymNoMembership and training come out of pocket. |
This compares categories of care, not any named practice or gym. What a given doctor's office or gym offers varies, and plenty do more than the middle and right columns describe.
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One endocrinologist, four dietitians, and three medical fitness trainers, reading the same test results for the same patient. That is the whole idea.
The team works across women’s health, bone health, diabetes, and medical weight loss, with metabolic testing, body composition analysis, and labs done before any plan is written.
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Our team consists of endocrinologists to registered dietitians, personal trainers, and social workers for a truly holistic and personalized approach to your wellbeing. We emphasize the power of food, medicine and movement.
As providers, we ultimately understand that health can be achieved with knowledge.
Knowledge about proper nutrition.
Knowledge about the importance of movement.
Knowledge about the advances in medicine.
And knowledge about the various aspects of life that impact our overall well-being.
Because we understand that so much more is vital to health.
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neXendo Wellness aims to comprehensively tackle health by uniquely combining endocrinology, nutrition, and exercise strategies into one interdisciplinary and evidence-based approach to optimize health.
We focus on sustainable dietary and lifestyle behavior changes to improve overall wellness and quality of life.
Meet the Team
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![A man with gray hair and glasses wearing a white medical coat standing in front of a white wall with a Nexendo Wellness logo.]()
Anastasios Manessis, MD, FACE, ECNU, ABOM
Founder | Endocrinologist
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![A smiling woman wearing a blue sleeveless top and a cross necklace standing in front of a white wall with 'Nexendo Wellness' logo.]()
Sasha Bayat, RDN
Director of neXendo Wellness
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![A smiling woman with long brown hair standing in front of a white wall with the 'Nexendo Wellness' logo.]()
Irene Xu, MS, MPH, RDN, CPT, CSPS
Director of neXendo fitness
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![A man with short black hair and wearing a white polo shirt with 'Nexendo Wellness' logo, standing in front of a white wall with the same logo.]()
Joseph Liao, MS, CPT, CES
Personal Trainer - ONERO Certified
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![A man with glasses wearing a white polo shirt with 'Nexendo Wellness' logo on the chest, standing in front of a plain white wall.]()
Jonathan Shin, LMT, CPT
Personal Trainer & Massage Therapist
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![A young person with short dark hair and round glasses, smiling, wearing a white polo shirt with a Nexendo Wellness logo, standing in front of a white wall with a Nexendo Wellness sign.]()
Yang Liu, MDN, RDN, CDCES
Registered Dietitian
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![A young woman with brown hair, smiling, wearing a white shirt and jewelry, standing in front of a white wall with the 'Nexendo Wellness' logo.]()
Courtney Capazzi, MS, CNS
Clinical Nutritionist
Common questions
Nutrition
Why is nutrition important?
Nutrition directly impacts blood sugar, inflammation, hormones, energy levels, genes, and so much more. It is a key factor in managing chronic diseases, supporting weight loss, and improving long-term health outcomes. Consistent, individualized nutrition can help prevent or reduce progression of many conditions.
What happens during a nutrition visit?
A Registered Dietitian Nutritionist (RDN) will review your health history, goals, and current lifestyle habits with you. Together, you will create a plan tailored to your needs and lifestyle. Follow-ups focus on progress, adjustments, and ongoing support.
What is a dietitian (RDN)? What is the difference between a dietitian and a nutritionist?
An RDN is a Registered Dietitian Nutritionist who has completed accredited education, supervised training, and passed a national exam. The term “nutritionist” is not regulated and can vary widely in qualifications. RDNs are licensed to provide medical nutrition therapy for health conditions.
More about nutrition at neXendo Wellness
Exercise
Why is exercise important?
Exercise improves cardiovascular health, strength, independence, mood, bone health, and more. It also supports weight management and helps reduce risk of chronic disease. Regular movement is one of the most effective tools for long-term health.
Why is a medical fitness trainer important, and how is it different from a standard gym trainer?
A medical fitness trainer has advanced training in kinesiology and works with clients who may have medical conditions or physical limitations. They focus on safe, evidence-based exercise tailored to health needs rather than general fitness goals. This approach is more clinical and individualized than a standard gym environment.
What happens during a session with a medical fitness trainer?
Sessions involve 1:1 guided exercise in a controlled, supportive gym setting. Movements are selected based on your health status, goals, and safety needs. The focus is on proper form, confidence, and sustainable progress.
Endocrinology
What is endocrinology?
Endocrinology is the study of hormones and how they regulate body functions like metabolism, growth, and mood. Endocrinologists diagnose and treat hormone-related conditions such as thyroid disorders and diabetes. Hormonal balance is essential for overall health.
Why is seeing a doctor for hormones important?
Hormones affect nearly every system in the body, and imbalances can cause subtle but significant symptoms. Early evaluation can help identify issues before they worsen. Proper diagnosis ensures targeted and effective treatment.
If I don't think anything is wrong, why should I still get checked out?
Many hormonal or metabolic issues develop gradually and may not cause obvious symptoms at first. Routine screening can detect imbalances early, improving prevention and outcomes. Preventive care is often more effective than waiting for symptoms.
My PCP said I was fine, but I still suspect a hormone issue. Should I get checked again?
If symptoms persist or feel unresolved, seeking a second evaluation can be helpful. Standard labs may not always capture nuanced hormonal imbalances. A more specialized assessment can provide additional clarity and reassurance.