Right, so I've been down this exact path for a telehealth dermatology client. The key is treating this less like a keyword problem and more like a journey-node problem.
First things first: what's your actual conversion event? A booked consultation? a completed visit? Those two sit on completely different logic branches. if you're optimising for a booking, your lead quality check is happening post-click, and your acquisition cost is really the cost per qualified lead, not per form fill.
That 50-dollar target with a six-dollar max bid implies a conversion rate around 12%. Possible, but only if you've got a landing page that acts as a single-threaded trigger - no distractions, clear path to booking, strong social proof. Even then, most dermatology sites I've audited have a journey gap between the ad click and the scheduling node. People bounce because they hit a generic form or a "call us" button - that's a leak in the flow.
The bigger issue is competitive set. You're not just fighting local derms - you're up against national telehealth aggregators who've built entire automated win-back sequences for drop-offs. Their customer journey maps are tighter. So your segment needs to be hyper-specific: maybe skin conditions that require ongoing management (acne, rosacea) where the lifetime value is higher. That lets you justify a higher initial acquisition cost.
Also, check your match types. Broad match on "telehealth dermatology" is likely bleeding budget into irrelevant search queries. build a logic branch with phrase and exact match for high-intent terms like "online acne prescription" or "teledermatology for rosacea". Those usually have lower CPCs and better conversion intent.
And yeah, Meta can work, but only if you've got creative that mimics the consult experience - think short video of a derm explaining a common condition, then a direct "book now" CTA. That's a different journey than Google's search intent, but it can feed a nurture segment.
Bottom line: start with a smaller budget, refine the journey nodes, and let the system learn. Don't expect that 12% conversion rate on day one.