Practice-management API integration depth (Dentrix Connect, Eaglesoft, Open Dental, Curve, Carestack)?

The five major practice-management systems and their API depth:

• Dentrix Connect (Henry Schein), ~40% of US clinics. REST API with OAuth 2. Can read clinic’s used-product list, write order data back as a journal entry, push reorder alerts. Partner-program required (annual fee + technical review). Most distributors integrate Dentrix first because the install base is biggest.
• Eaglesoft (Patterson), ~25% of US clinics. Scripting + ODBC interface (older architecture, no REST). Workable but more brittle than Dentrix Connect. Integration via Patterson’s API portal.
• Open Dental, ~10% of US clinics, open-source friendly. Full REST API, no partner-program gate, free to integrate. Cleanest API of the five. If a clinic is on Open Dental, integration is fast (1-2 weeks).
• Curve Dental, cloud-native, ~8% of US clinics, growing. Solid REST API with OAuth 2. Partner program but lighter weight than Dentrix.
• Carestack, cloud-native, growing fast in DSO segment (Heartland, Pacific Dental). Modern REST API, OAuth 2, webhook support. Best fit for DSO-heavy distributors.

Integration pattern that works:

• Clinic logs into your Magento store with OAuth via their practice-management account, no separate signup, no password.
• One-click reorder from used-product history, Magento queries the PMS for the clinic’s last 90 days of inventory usage, suggests a reorder cart. Cuts clinic ordering time from 15 minutes to 90 seconds.
• Order data flows back as a journal entry for the clinic’s overhead reporting. Patient identifiers stay in the PMS; only line-item + clinic-account data crosses into Magento.

Prioritisation: integrate Dentrix first (biggest install base), then Open Dental (cleanest API, fastest to ship), then Carestack (DSO upside), then Eaglesoft (largest legacy base but slowest to integrate), then Curve. Build time per connector: 3-6 weeks.