EPS Sanitas members' appointments, in Microsoft Outlook. With Arbol, with no manual copying.
How it works
The EPS Sanitas member calls or writes to your organization.
The assistant asks for the EPS Sanitas order and authorization before offering a slot.
It checks availability in Microsoft Outlook and creates the appointment as an event on the clinician's calendar.
If the patient reschedules, it moves it in Microsoft Outlook and lets your team know.
What each one is
Health insurer (EPS) in the contributory and subsidized regimes
EPS Sanitas
Entidad Promotora de Salud Sanitas S.A.S. (EPS Sanitas) is a health insurer (EPS) founded in 1994, after Colombia's social security reform. It has members in both the contributory and subsidized regimes and is the country's second-largest EPS by membership.
Clinics use the EPS Sanitas provider portal for hospital referrals and online office requests, and bill it for the care they give its members.
6,148,861 members as of August 2026: 4,628,224 in the contributory regime and 1,520,637 in the subsidized regime. Source: minsalud.gov.co (opens in a new tab)
Providers log in to its "Prestadores e Instituciones" portal, which includes an online office and hospital referrals.
Arbol API. Arbol already has an API for the EPS: your tech team connects your systems to EPS Sanitas from there.
EPS Sanitas integrationEmail and calendar
Microsoft Outlook
Outlook is Microsoft's email and calendar, and it also manages contacts. It is part of Microsoft 365, where mailboxes live in Exchange Online, and it also works with personal Microsoft accounts. The new Outlook for Windows is free and requires no subscription.
Run email and calendars for clinical and admin staff, and send appointment invitations to patients.
Exchange Web Services (EWS) is disabled by default in Exchange Online starting October 1, 2026, and shuts down completely on April 1, 2027; Microsoft directs developers to migrate their apps to Microsoft Graph. Source: techcommunity.microsoft.com (opens in a new tab)
Microsoft Graph is Microsoft's REST API for Outlook: it can read, send and organize email, create and update events, check availability and receive change notifications.
Microsoft Outlook integration
Questions
Does it work if each clinician has their own Microsoft Outlook calendar?
Yes: before offering a slot, the assistant checks the availability of every Microsoft Outlook calendar your organization connected.
Do EPS Sanitas or Microsoft Outlook endorse Arbol?
No. EPS Sanitas and Microsoft Outlook are trademarks of their owners and do not sponsor or endorse Arbol. Arbol works on your organization's side, with the accounts and processes you already have with each.
What happens to patient data?
They are health data, sensitive under Colombia's Law 1581 of 2012: processed for a stated purpose, with the patient's authorization and with encryption and isolation per organization. Every conversation is recorded and exportable.
Trademarks and logos belong to their owners. EPS Sanitas and Microsoft Outlook do not sponsor or endorse Arbol. All integrations · Arbol's API
Let's look at EPS Sanitas and Microsoft Outlook in your operation.
A 30-minute demo with your team: how you work today, what we connect first and how long it takes. You leave with a written proposal.