If you are thinking about Wegovy, Zepbound, or another GLP-1 medication, you have probably noticed they seem to be everywhere now. Med spas, online subscription services, and walk-in clinics all promise quick, easy access. That can feel like good news if you have struggled with your weight for years. But the most important question is not where you can get a prescription. It is who will be looking out for you once you start.
This guide explains how to choose a GLP-1 weight loss provider on Long Island, what real medical supervision looks like, and the warning signs that should make you walk away. Long Island Weight Loss Institute (LIWLI) has been treating obesity as a medical condition on Long Island since 2001.
Why Does It Matter Who Prescribes Your GLP-1 Medication?
It matters because these medications have real effects throughout your body. They change how hungry you feel, how quickly your stomach empties, and how your body handles blood sugar, so your dose should be set and adjusted by someone who knows what to watch for. Wegovy (semaglutide) and Zepbound (tirzepatide) are FDA-approved for chronic weight management, and so is the Wegovy pill. (We compare the pill and the shot in our Wegovy pill vs. injection guide.) But FDA approval covers the drug, not the setting where you receive it.
Think of the prescription as the first step, not the whole plan. Your dose needs to increase gradually, side effects like nausea and constipation need to be managed, and other medications you take may need to change as you lose weight. A provider who hands you a vial and a login cannot do any of that well.
Your weight is also shaped by many things at once, including genetics, hormones, sleep, stress, and daily habits. For that reason, according to the Obesity Medicine Association, obesity medicine clinicians build personalized plans that combine nutrition, physical activity, behavior therapy, and medication. That is very different from a one-time sale.
What Should a GLP-1 Weight Loss Provider on Long Island Actually Do?
A good GLP-1 provider gets to know you before prescribing anything, then continues to see you, in the office or by telehealth, for as long as you are on treatment. Here is what that care should include:
- A real conversation about your health history and current medications, plus lab work, with attention to conditions like diabetes, high blood pressure, or sleep apnea
- A dosing plan that increases slowly and adjusts to how your body responds
- Regular check-ins, so side effects get handled early
- Body composition tracking, so you know whether you are losing fat or muscle
- A long-term plan for maintenance, not only for the first few months
Look for a supervising physician who is board-certified in obesity medicine. According to the Obesity Medicine Association, an ABOM Diplomate has completed at least 60 hours of obesity-specific education and passed the American Board of Obesity Medicine certification exam. LIWLI founder Dr. Michael Kaplan holds this certification and has practiced obesity medicine since 2001. Program director Dr. Andre Giannakopoulos is also ABOM-certified and board-certified in internal medicine. You can meet the full care team, including our nurse practitioners and physician assistants, on our expert staff page.
“We feel it is really important to have physicians who are board-certified in obesity medicine treating obesity like the chronic disease it is,” says Dr. Kaplan. “That means really working with our patients and teaching them how to keep it off.”
At LIWLI, a body composition analysis is done at each visit to separate your weight loss into fat, muscle, and water. That matters because protecting muscle is part of losing weight safely, a topic we cover in more detail in our guide to GLP-1 injections and muscle loss.
What Are the Risks of Buying GLP-1 Injections Online or From a Med Spa?
The honest answer is that without real medical oversight, you may not get the drug you think you are getting, and there may be no provider to call if something goes wrong. The FDA warns that unapproved versions of semaglutide and tirzepatide do not go through its review for safety, effectiveness, or quality before they are sold.
The FDA has documented several specific problems:
- People measuring and injecting the wrong dose of compounded medication, sometimes ending up in the hospital
- Labels naming pharmacies that do not actually exist
- Injectable medication showing up warm, without enough ice to keep it safe
- Products marked “for research purposes” or “not for human consumption” that were sold to people anyway, complete with dosing instructions
As of May 31, 2026, the FDA had received 990 reports of adverse events tied to compounded semaglutide and more than 730 tied to compounded tirzepatide. The agency says it cannot always prove the drug caused each problem, but it also says the true numbers are probably higher, since many pharmacies are not required to report them.
Not every med spa or online service is unsafe. But if no licensed provider follows your care over time, more of the risk falls on you.
Red Flags to Watch For Before You Sign Up
The FDA lists several warning signs for online and telehealth GLP-1 sellers. Be cautious if a company:
- Claims a compounded drug is the same as an FDA-approved drug
- Offers prices that seem too good to be true
- Does not require a screening and prescription from a licensed provider
- Has no licensed provider available to answer questions after your medication arrives
- Sends medication with spelling errors or a wrong pharmacy address on the label
If something feels off, trust that instinct. Pause and talk with a provider before you inject anything.
Why Medical Supervision Matters Even More With Severe Obesity
If you are carrying a lot of extra weight, having a provider in your corner is not a nice extra. It is essential. Severe obesity often comes with other health issues, like type 2 diabetes, high blood pressure, or sleep apnea, which can mean taking several medications that may need adjusting as the weight comes off.
You may also have heard “just exercise more” so many times that it stopped meaning anything. When your knees ache, your back hurts, or you get winded crossing a parking lot, that advice can feel impossible to follow. A one-size-fits-all online program is not built for where you are right now.
This is where LIWLI’s providers do some of their most important work. Your plan starts with you as you are today. Medication, nutrition, and close monitoring come first, and movement is added as your body is ready. Many patients find that moving gets easier as the weight comes off, which we explore in our article on weight loss, joint pain, and mobility. If you also have sleep apnea, our guide to Zepbound for sleep apnea explains how that treatment works.
Questions to Ask Before Your First Appointment
Wherever you go for care, it is completely fair to ask a few questions before you commit:
- Is my care overseen by a supervising physician who is board-certified in obesity medicine?
- Will I get lab work and a full medical evaluation before I start?
- How often will I be seen, and who do I call if I have side effects?
- Do you prescribe FDA-approved medications, and where are they dispensed?
- What is the plan once I reach my goal weight?
A good practice will be glad you asked and will answer each one clearly. For more of the questions our patients ask most, see 8 Smart Questions Long Island Patients Ask About Weight Loss Injections. To see why long-term planning matters, read What Happens If You Stop Taking GLP-1 Injections?
Find Provider-Led GLP-1 Care on Long Island
The right GLP-1 provider does more than write a prescription. They look at your overall health, adjust your treatment as you go, and stay with you for the long haul.
As Dr. Giannakopoulos puts it, “I get real joy out of seeing someone’s life change. I know that with the right guidance, you can accomplish the ultimate dream of getting the weight off for good.”
LIWLI offers physician-supervised weight loss injections at four Long Island locations in East Meadow, Amityville, Smithtown, and Port Jefferson Station, and through telehealth visits. Request a consultation and our team will help you figure out whether GLP-1 treatment is the right fit for you.