Build a Consultation-Funnel Worksheet: Segment or RudderStack

List every channel that generates initial interest: Instagram content, a paid social campaign, a Google search for a specific treatment, or a referral from an existing patient. For each one, note whether it currently produces a trackable event (a form fill, a click-to-call, a booking-widget click) or disappears into an untracked phone call or walk-in. Be honest about the gaps here rather than assuming a channel is tracked just because it exists on your marketing calendar.

Most MedSpas find that a meaningful share of interest, especially from before-and-after content on social, currently has no tracked event at all; that gap is usually the first thing worth fixing regardless of which CDP you choose.

Note your actual booking mechanism, most commonly a booking platform like Boulevard or Mindbody rather than a generic contact form. Check whether that booking platform can send a webhook event when a consultation is scheduled, and whether it can pass along which treatment the prospective patient is interested in as a property on that event, since "consultation booked" is a lot less useful than "consultation booked for a specific treatment category" for planning your next campaign.

If your booking platform's webhook support turns out to be limited, note that as its own finding rather than assuming a CDP will somehow compensate for it; the fix in that case is a conversation with your booking vendor, not a different CDP.

A consultation doesn't always convert to a booked treatment or package purchase immediately, and tracking that conversion, ideally as its own event tied back to the original consultation, tells you your actual consult-to-sale rate by lead source. This is often the step MedSpas skip, ending up able to report consultation volume but not which channels' consultations actually convert to revenue.

A treatment interest category ("interested in injectables") sits closer to marketing data than clinical data in most cases, but the line depends on your specific service mix and state regulations, particularly if your clinic offers medical treatments overseen by a physician rather than purely cosmetic services. Confirm with whoever handles your compliance program which fields are safe for a marketing CDP before building the pipeline, not after.

With that worksheet filled in, most MedSpas find they need a moderate number of destinations (a booking platform, an email/SMS tool, ad platforms) with UI-configured setup rather than deep warehouse work, which points toward Segment for most single- or few-location practices. A larger MedSpa group with several locations and its own marketing analytics function may prefer RudderStack once the worksheet reveals a genuine need for unified, warehouse-level reporting across locations.

A two-location MedSpa running Instagram content and a modest paid social budget filled out this worksheet and found: Instagram drove the most interest but had no tracked event at all, their booking platform supported webhooks but nobody had turned that feature on, and treatment-interest data was being collected on the intake form in a free-text field that their compliance advisor flagged as too broad for marketing use.

Fixing those three gaps, adding a trackable landing page link in their Instagram bio, enabling the existing webhook, and replacing the free-text field with a small set of broad category checkboxes, took about three weeks and didn't require choosing a CDP at all until after the gaps were fixed. That order matters: fix your data sources first, then choose the platform that connects them.

Only after those fixes did the practice actually need to decide between Segment and RudderStack, and by then the decision was simple: a two-location practice with a handful of destinations and no in-house data engineer had no real reason to take on a warehouse-first setup, so they went with Segment's hosted model.

To repeat the exercise for your own practice:

1. List every channel that generates interest and note whether each one produces a trackable event.
2. Check whether your booking platform sends a webhook when a consultation is scheduled, and whether it passes the treatment along.
3. Track the consultation-to-sale conversion as its own event tied back to the original consultation.
4. Decide with your compliance advisor whether any treatment interest data crosses into protected health data.
5. Choose the tool, with Segment fitting most single- or few-location practices and RudderStack a larger group.