Who fills the prescription? 94% of provider sites never say

Roughly 94% of the provider websites we track on getvial.com never identify the pharmacy that actually fills a patient’s prescription. Out of 883 provider sites we were able to evaluate, a mere 54 name the partner who does the actual fulfillment of the medication you put into your body. That’s 6.1%. The remaining 829 are quick to prescribe treatments while saying almost nothing about who compounds, packages, and ships the medication that eventually ends up in someone’s body.

Why this matters

Most clinics (both telehealth and physical) are simply the front-door marketing engine and not the manufacturer. The compounded semaglutide, tirzepatide, testosterone, or hormone therapy a patient receives almost always comes from a separate compounding pharmacy with its own inspection history, its own accreditation status, and its own record with federal regulators. And in many cases this lack of disclosure could signal worse. It could mean your provider is buying their medicines from grey-market, unregulated manufacturers.

Two providers can charge the same price, advertise the same protocol, and promise the same experience while sourcing from pharmacies with completely different regulatory histories. Yet patients are usually expected to make a decision without knowing which pharmacy is actually preparing the medication.

That’s the part that doesn’t sit right.

Review sites publish endless rankings of these companies. Five-star scores. “Best GLP-1 provider” lists. Affiliate tables. Quotes polished enough that they occasionally read like marketing copy (perhaps because some of them are). We looked through a lot of them. These ‘review’ sites can’t answer the most basic question: where does the prescribed compound actually come from?

That seems backward.

The numbers

Our research began with 957 providers listed in the Vial index.

We excluded 51 businesses that are pharmacies themselves, three providers that dispense exclusively through pharmacies they own, and five providers with no functioning website. That left 898.

Each site was evaluated based on what it actually disclosed on its own website. Generic phrases such as “licensed U.S. pharmacies” or “our pharmacy partners” were treated as non-disclosures because they identify nobody.

Some providers named two or three fulfillment pharmacies. That doesn’t necessarily mean prescriptions are assigned randomly... but it certainly suggests sourcing can change without much visibility for the patient. Even that tells you something.

How we checked

Before running the research, we tested the extraction against four providers whose pharmacy disclosures we had already directly verified.

The first version failed.

It missed disclosures we knew were there, which was frustrating—but also exactly why validation exists before publishing research. We adjusted the extraction logic, repeated the validation, and only then expanded to the full dataset.

Each provider site was checked across as many as 19 standard locations because disclosures have a habit of being buried in the fine print: terms of service, shipping pages, privacy policies, obscure FAQs.

There is one limitation worth acknowledging. A pharmacy disclosure living on an entirely separate domain can be missed by even extensive research. During validation, one confirmed disclosure surfaced only through a manual web search because there was no discoverable path from the provider’s website. So 6.1% is probably a floor rather than an exact ceiling. Maybe the real number is 7% or 8%.

It definitely isn’t 50%.

What this does not mean

A provider’s silence is not evidence of wrongdoing. There is no federal rule requiring telehealth clinics to publicly identify their fulfillment pharmacy, and many providers that disclose nothing may very well be working with accredited pharmacies that have clean inspection records.

The issue is different.

Patients cannot evaluate information that is never disclosed. FDA warning letters, inspection reports, OIG exclusions, and DEA registration actions are public. The records exist. The names usually don’t.

When a provider identifies its fulfillment pharmacy, we connect that relationship directly to the pharmacy’s profile and its federal record inside Vial. That allows patients to see what regulators have actually documented instead of relying on marketing language alone.

Data: Vial provider index, 2026-07-08 outputs. See also the companion Compounder Enforcement Study. Corrections: hello@getvial.com. How the index itself is built: Vial methodology.