Several types of licensed medical professionals can prescribe weight loss injections, including primary care physicians, endocrinologists, obesity medicine specialists, nurse practitioners, and physician assistants. You don’t necessarily need to see a specialist to get started, though the right provider depends on your health history and what’s available in your area.
Which Providers Can Write the Prescription
Any licensed prescriber can technically write a prescription for a weight loss injection. That includes MDs and DOs across all specialties, as well as nurse practitioners (NPs) and physician assistants (PAs), whose prescribing authority varies slightly by state. In practice, most people get their prescription from one of a few common sources.
Your primary care doctor is often the simplest starting point. They already know your health history, can order the necessary bloodwork, and can evaluate whether you meet the eligibility criteria. Many primary care physicians are comfortable prescribing these medications, especially as demand has grown over the past few years.
If your situation is more complex, or if your primary care doctor prefers not to manage weight loss medications, you may be referred to a specialist. Endocrinologists handle hormonal and metabolic conditions and frequently prescribe these drugs, particularly for patients who also have type 2 diabetes. Bariatric medicine physicians focus specifically on weight management. Some internists and cardiologists also prescribe weight loss injections when obesity is contributing to conditions they’re already treating, like high blood pressure or cardiovascular disease.
Obesity Medicine Specialists
A smaller but growing group of physicians hold board certification in obesity medicine through the American Board of Obesity Medicine (ABOM). This certification became available in 2012, and by 2019, more than 3,400 physicians had earned the credential. That number is expected to surpass 5,000 in the coming years, with NPs and PAs increasingly pursuing the certification as well.
These providers take a comprehensive, individualized approach to obesity treatment rather than simply writing a prescription. They’re more likely to coordinate medication with nutrition counseling, behavioral strategies, and long-term monitoring. If you have significant weight to lose, a history of unsuccessful attempts, or multiple obesity-related health conditions, seeking out an ABOM-certified provider can be worthwhile. You can search for one through the ABOM directory on their website.
Telehealth Prescribers
Online platforms staffed by licensed physicians, NPs, and PAs now offer weight loss injection prescriptions through virtual visits. The DEA and HHS have extended telemedicine prescribing flexibilities through December 31, 2026, meaning providers can prescribe many medications without an in-person exam as long as certain conditions are met. Weight loss injections like semaglutide and tirzepatide are not controlled substances, so they face fewer telehealth restrictions than some other medications.
Telehealth visits typically involve a video consultation, a review of your medical history, and sometimes an order for bloodwork at a local lab. The convenience is real, but the quality varies. Some telehealth companies pair you with a dedicated provider who monitors your progress over months. Others operate more like prescription mills with minimal follow-up. Look for services that require lab work, offer ongoing check-ins, and have a clear process for dose adjustments.
What Providers Check Before Prescribing
Regardless of who writes the prescription, the process follows a similar pattern. Your provider will evaluate whether you meet the FDA-approved eligibility criteria: a BMI of 30 or higher, or a BMI of at least 27 with a weight-related condition such as type 2 diabetes, high blood pressure, high cholesterol, obstructive sleep apnea, cardiovascular disease, or a form of liver inflammation called metabolic dysfunction-associated steatohepatitis.
Before starting medication, most providers order baseline bloodwork. This commonly includes an A1C test to check blood sugar levels, along with kidney function and liver enzyme panels. These results help your provider choose the right medication, rule out contraindications, and establish a baseline for monitoring while you’re on the drug. If you have type 2 diabetes, expect A1C testing at least twice a year going forward. Kidney function may also be monitored periodically, since GLP-1 medications can occasionally affect the kidneys.
Your provider will also review your full medical history, including any prior weight loss attempts, current medications, and family health patterns. Clinical guidelines from the American Diabetes Association emphasize a shared decision-making approach, where the provider presents the potential benefits, risks, and expected outcomes, and you weigh those against your personal goals, treatment burden, and cost. The focus isn’t purely on the number on the scale. Providers are increasingly prioritizing medications most likely to improve specific obesity-related conditions you already have.
What Happens After the First Prescription
Getting the initial prescription is only part of the process. These medications are prescribed at a low starting dose and gradually increased over several weeks or months, which means you’ll need follow-up appointments for dose adjustments. If you haven’t lost at least 5% of your body weight after three to six months on the full dose, your provider will likely recommend switching to a different medication or adding another treatment approach.
If the medication is working well and you’re not experiencing serious side effects, your provider may suggest continuing it long term. Weight loss injections are not a short course of treatment for most people. Stopping the medication often leads to weight regain, so the ongoing relationship with your prescriber matters. Choose a provider you can see consistently, whether that’s your primary care doctor, a specialist, or a telehealth platform with continuity of care.
A Note on Compounded Versions
Some providers, particularly through online clinics, have prescribed compounded versions of semaglutide or tirzepatide. These are custom-mixed copies made by compounding pharmacies, not the brand-name products. The FDA allows compounding under specific legal conditions, primarily when there’s an active drug shortage. As of early 2025, the FDA has ended its period of enforcement discretion for compounded semaglutide and tirzepatide produced by state-licensed pharmacies, meaning the legal window for these products has narrowed significantly. Compounded drugs do not go through the same safety, effectiveness, and quality review as FDA-approved medications. If a provider offers you a compounded version, it’s worth asking whether the brand-name product is available and understanding the trade-offs.