Start with Lévis business resources and the actual address
The city's business resource page links to PerLE for information about permits and licences at different government levels. Use it to organize questions about the proposed activity, then confirm the relevant requirements with the responsible authority. A search result is a starting point, not an issued permission.
State whether the business operates administration, clinical premises, product sales, or a combination. Identify the Lévis address and any other location separately. Do not use Québec City's municipal process merely because a partner or patient may travel there.
Keep a record of which authority answered each question. Corporate, municipal, and professional registration have different purposes. If advisers determine that a listed requirement does not apply, record the facts behind that conclusion. This makes a later change in activity easier to review and avoids treating a generic launch checklist as proof that the business is ready.