Weight Management care at Fountain Health NYC

Fountain care

Endocrinology + obesity medicine

Medical weight care, without reducing you to a number.

Weight is influenced by metabolism, hormones, appetite, sleep, nutrition and more. We look at the broader picture and build a medical plan around your health, with GLP-1 treatment when appropriate.

A connected view

Understanding your health before managing your weight.

Your weight is influenced by how your body regulates appetite, energy and metabolism, along with hormones, sleep, medications, nutrition, activity and your health history.

We look at those factors together to understand where care should focus. Treatment may include medication, nutrition, strength training and other medical care based on what you need.

Conditions we address

Start with what is getting in your way.

People come to Fountain at different points in their weight and metabolic health. We start by understanding what has changed, what you have tried and what may deserve a closer look.

  1. Overweight and obesity

    Medical care for excess weight with attention to overall health, metabolic risk and sustainable change.

  2. Metabolic health concerns

    Weight concerns alongside insulin resistance, blood sugar, cholesterol, body composition, appetite, energy regulation, or other metabolic factors.

  3. Weight-loss plateaus & regain

    When progress has slowed or weight has returned, we take a closer look at what may be getting in the way and how treatment should change.

  4. GLP-1 treatment

    Evaluation and ongoing medical care for semaglutide, tirzepatide and other weight-management medications when clinically appropriate.

Multidisciplinary care

Psychiatry, therapy, nutrition, endocrinology, sleep and more.

Root-cause approach

We look beyond symptoms to treat underlying drivers.

Measurable progress

Data-informed care to help you feel better and perform at a higher level.

An older couple moving together beside the ocean

How care works

A medical plan built around your health.

Weight management is different for everyone, but the process starts by understanding why you are here, what your health looks like now and what treatment makes sense for you.

  1. 01

    Understand where you are now

    We review your weight history, medical history, medications, previous approaches, eating patterns, activity and what you want to change.

  2. 02

    Look at a broader picture

    Your clinician considers metabolic health, hormones, sleep, nutrition, body composition and other factors that can influence weight and treatment decisions.

  3. 03

    Make a personal treatment plan

    Your plan may include nutrition, strength training, behavioral changes and medications such as semaglutide or tirzepatide when appropriate.

  4. 04

    Follow what is changing

    We track your progress, response and side effects over time and adjust treatment as your needs change.

Specific services, tests, and treatments depend on clinical eligibility and your clinician’s recommendations.

Your care team

Physician-led weight management with the right expertise shaped around you.

Physician, Functional Medicine & Longevity

Dr. Teets is a board-certified family physician and Mount Sinai faculty member bringing integrative and functional-medicine training to Fountain’s longevity care, connecting prevention, chronic disease, metabolic health, and long-term risk within one clinical view.

Physician, Internal Medicine & Hormonal Health

Dr. Klesaris brings more than two decades of internal-medicine experience to hormonal health, medically managed weight loss and age-management care.

Your care may involve physicians, nutrition professionals and other clinicians depending on what you need. Because Fountain also provides hormonal, metabolic, mental health, sleep and nutrition care, the factors affecting your weight can be addressed together.

Common questions

About weight management care

Who may be a candidate for medical weight management?

Medical weight management may be appropriate for people who want to lose weight, improve body composition, address metabolic health concerns, or reduce health risks associated with excess weight. Eligibility is based on more than the number on the scale. Your provider considers your weight history, body composition, metabolic health, medical conditions, medications, previous weight-loss efforts, nutrition, activity, sleep, and personal goals. From there, we determine whether medication, nutrition support, exercise programming, behavioral changes, or a combination of approaches may be appropriate.

How is Fountain’s approach to medical weight management different?

Fountain approaches weight management as a medical and body-composition problem, not simply a matter of lowering the number on the scale. We look at factors that may be influencing your weight and metabolic health, including nutrition, muscle mass, hormones, medications, sleep, activity, and other medical conditions. Depending on your needs, your program may include comprehensive biomarker testing, DEXA scans to measure fat and lean mass, repeat testing to track progress, and ongoing medical follow-up. You may also work with a registered dietitian nutritionist and, when appropriate, a strength and fitness specialist. The goal is to understand what is changing inside your body, preserve lean mass and nutritional health, and adjust your plan as your metabolism, body composition, and goals change.

What is the difference between semaglutide and tirzepatide?

Semaglutide and tirzepatide are medications that affect pathways involved in appetite, fullness, blood sugar regulation, and metabolism. Ozempic and Wegovy contain semaglutide, while Mounjaro and Zepbound contain tirzepatide. The medications differ in their mechanisms and FDA-approved indications. There is not one medication that is right for everyone. Your provider considers your medical history, weight and metabolic goals, previous treatment response, potential side effects, contraindications, and other clinical factors when determining whether one of these medications may be appropriate.

What side effects can occur with GLP-1 medications?

Digestive symptoms such as nausea, constipation, diarrhea, reduced appetite, or abdominal discomfort can occur, particularly when beginning treatment or increasing the dose. For many patients, these effects are manageable and may improve as the body adjusts. Your provider can modify dose progression, nutrition, hydration, meal size, or other parts of the treatment plan when needed. The goal is to find a dose that is both effective and well tolerated rather than simply increasing medication as quickly as possible.

What should I eat while taking a GLP-1 medication?

There is no single required diet for someone taking a GLP-1 medication. Because appetite can decrease significantly, the priority is making sure you continue to get enough protein, fiber, micronutrients, fluids, and overall nutrition. Some patients tolerate smaller meals better than large or very rich meals. When appropriate, Fountain’s registered dietitian nutritionist can help build a nutrition plan around your medication, body-composition goals, food preferences, activity level, and any side effects you are experiencing.

How do you help me lose fat without losing too much muscle?

Weight loss can include both body fat and lean tissue, which is why we do not measure success by the scale alone. Preserving muscle is important for strength, physical function, metabolic health, and maintaining results over time. Your plan may include adequate protein intake, resistance training, nutrition support, and monitoring of body composition through tools such as DEXA. When appropriate, a strength and fitness specialist can also help build a program around your current abilities and goals. The objective is to improve body composition, not simply make your body weight lower.

What happens if my weight loss plateaus?

Plateaus are common and do not necessarily mean treatment has stopped working. When progress slows, we look at the broader picture, including nutrition, activity, sleep, medication response, dose, body composition, other medications, and possible hormonal or metabolic contributors. Sometimes the treatment plan should be adjusted. In other situations, the appropriate goal may temporarily shift toward maintaining weight, preserving or building muscle, or improving metabolic health before pursuing additional weight loss.

Will I need to stay on a GLP-1 medication forever?

Not necessarily. The appropriate duration of treatment depends on your health, response, goals, and what happens as medication is reduced or discontinued. For some patients, longer-term treatment may be appropriate. Others may eventually transition to a different dose or strategy, or discontinue medication while continuing the nutrition, strength, sleep, and behavioral changes developed during treatment. We think about how you will maintain your results from the beginning, rather than treating weight loss as a short-term intervention.

Clinically reviewed by

Last reviewed: October 2026

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