The decision
An office may need live phones, appointment changes and follow-up work during a defined shift. A dedicated assistant can own that combination when the workload is scoped. A shared answering service is a different option for overflow and after-hours routing.
What to compare
Shortlist MedicalVirtual for flexible scheduled staffing, My Mountain Mover for a full-time managed model and Hello Rache for hourly healthcare support. Compare the actual service conditions rather than treating their different billing units as equivalent.
Before you commit
Ask who covers absences, which EHR actions are included and how the assistant handles an unfamiliar patient request. Use a clear daily handoff so the local team knows what remains unresolved.