Washington EVV: Aggregator, Model, and Provider Portal
Last verified 2026-05-09
- Aggregator
- ProviderOne (state claims system; no separate third-party aggregator)
- Model
- Open model — choose any compliant vendor
- Telephonic backup
- Yes
- State provider portal
- www.dshs.wa.gov ↗
Washington uses a Provider Choice Model, meaning providers select their own EVV-compliant system with no state-mandated vendor. ProviderOne (the state's claims processing platform) acts as the data aggregator, receiving required EVV data elements embedded in claims submissions from Home Care Agencies and CDWA. Individual Providers employed by the Consumer Directed Employer (CDWA) use the CareAttend app. The state does not prescribe a single telephonic backup method but explicitly acknowledges telephony systems as a viable backup for areas lacking adequate internet connectivity.
What is EVV?
Electronic Visit Verification is the federal requirement (under the 21st Century Cures Act §12006) that personal-care and home-health visits paid by Medicaid be electronically captured at the point of care — who provided the service, who received it, where, when it started, and when it ended. CMS pushed enforcement to the states, which is why the day-to-day experience varies so much.
What "open model — choose any compliant vendor" means in Washington
Providers may use the state-provided aggregator at no cost OR any third-party EVV system that meets the state's technical specification (often called "AltEVV"). Either way, visit data must reach the state in the required format.
How does Caregiver Scheduling integrate?
Caregiver Scheduling captures the six required EVV data points on every visit (caregiver, recipient, start time, end time, location, service type) with GPS-stamped clock-in and clock-out, and telephonic backup for caregivers without a smartphone. In open-model states, our visits are EVV-compliant on their own. In mandated-aggregator states, we forward verified visits to the state system on a nightly schedule so payroll and Medicaid billing stay in sync without double-entry.