Compare
Definitive gives you data. Wellby does the work.
Definitive Healthcare sells healthcare data: claims, provider profiles and affiliations, mostly to health systems, life sciences and medtech. Great for looking things up. Wellby is built for referral-driven providers and goes further: agents that turn the data into outreach and follow up until partners reply.
With Definitive, your team still
- Searches provider, affiliation and claims data
- Exports lists into a CRM
- Turns dashboards into a weekly plan by hand
- Writes and sends every message
- Has no view of the private-pay referrals you actually receive
With Wellby, agents are built to
- Rank who to contact today, from market data and your own referrals
- Draft every thank-you, check-in and update for approval
- Follow up until the partner replies, then book the visit
- Track every source month over month and quarter over quarter
- Work for small teams with no analysts
Wellby vs Definitive Healthcare, side by side
| Area | Definitive HealthcareBased on its public materials | WellbyBuilt to do the work |
|---|---|---|
| What you get | Datasets and analytics to search, filter and export. | An agent that does the outreach: prioritized, drafted and followed up, with your team approving what goes out. |
| Who to call | Referral-pattern and network analytics you interpret yourself. | A ranked queue for each marketer, built from market data plus the referrals you actually receive. |
| Writing the outreach | Done by your team, often in a separate CRM. | Drafted for every message, in your team's voice. |
| Follow-up | Handled outside the product, in your CRM or inbox. | Built to follow up until the partner replies, then book the visit. |
| What gets measured | Market and claims analytics. Measuring whether outreach worked is left to your CRM. | Outcomes: your share of each source's referrals, quiet partners won back, referrals per outreach and admissions per marketer. |
| AI | Turbo, a conversational search over its data, in early access (general availability targeted for late 2026). | Agents built to act: prioritize, write and follow up, not just answer questions. |
| Who it's for | Health systems, life sciences, medtech and other healthcare-facing businesses. | Referral-driven care providers and the owners, marketers and admissions teams who grow them. |
Already using Definitive?
Keep it for market sizing if you need it. Wellby is built to do the day-to-day work that grows referrals: deciding who to reach, writing to them and following up.
Sources
- Definitive Healthcare: Home
- Definitive Healthcare: Early adopter AI platform (Aug 6, 2026)
- Definitive Healthcare: Provider strategy
- Definitive Healthcare: Medical claims
Definitive Healthcare details are based on its public website and announcements as of November 2026. Definitive Healthcare is a trademark of its owner; Wellby is not affiliated with it. Wellby is in development, and its column describes what it is built to do.
14-day free trial
See your referral network and work it.
Sign up, add your offices, and see your referral picture in minutes. No sales call.