Voice agents that answer the calls your business is missing.
I design and run bilingual AI receptionists in production at real medical and dental clinics, not demos. Spanish-first voice and WhatsApp agents that pick up missed calls, answer patient questions from a governed knowledge base, and book directly into the practice calendar.
SofíaConsultorio dental, le atiende Sofía. ¿En qué puedo ayudarle?Dental office, this is Sofía. How can I help you?
CallerQuería ver si tienen cita para una limpieza esta semana.I wanted to see if you have an opening for a cleaning this week.
SofíaClaro. Tengo jueves a las 10:30 o viernes a las 4. ¿Cuál le queda mejor?Of course. I have Thursday at 10:30 or Friday at 4. Which works better?
CallerEl jueves está bien.Thursday is fine.
SofíaPerfecto, queda agendada. Le llega la confirmación por WhatsApp en un momento.Done, you're booked. Your WhatsApp confirmation is on its way.
Behind this call: LiveKit voice pipeline → knowledge base lookup → Google Calendar write → WhatsApp confirmation. No human touched it.
Selected work
Five agents. One discipline behind them.
The first three run under VozClinic, my healthcare voice-AI product, each with its own persona, knowledge base, calendar integration, and Spanish/English handling tuned to the clinic's patients. The last two are the sales side of the same operation.
Sofía
Dental clinic · Tijuana, MXLive
Full front-desk agent for a multi-dentist practice. Sofía answers missed and after-hours calls, handles pricing and treatment questions from a curated bilingual knowledge base, and books into individual dentist calendars as the source of truth. No double-booking, no "someone will call you back."
Channels
Voice (missed-call forwarding) + WhatsApp Business
Stack
LiveKit, n8n, WhatsApp Business API via Twilio, Google Calendar
Hard part
Per-dentist calendar routing and a data-protection agreement negotiated with the clinic's legal counsel. This runs under a real DPA, not a handshake
Missed-call rescue for a fertility practice where every lost call is a five-figure patient journey. The clinic's existing line forwards to Lía after 30 seconds of no answer; she triages in the caller's language, answers sensitive questions with clinically reviewed content, and captures the consultation request instead of letting it go to voicemail.
Channels
Voice, via carrier call-forwarding on the clinic's existing number
Stack
LiveKit voice pipeline, Supabase, n8n workflows
Hard part
Tone. Fertility callers are often anxious or grieving; the persona, pacing, and escalation rules were designed with a nurse's judgment, not just a prompt
▸ Lía on WhatsApp, representative exchange (details scrubbed)
hola
Before we start, I should mention I'm the clinic's AI assistant. I can help with most things, and I can connect you with a member of the team whenever you'd like. Thank you for contacting Fertilité, this is Lía. How can I help you today?✓✓
schedule a virtual consultation
Here are a few options: Friday, August 7 at 10:00 AM or 5:00 PM. Saturday, August 8 at 11:00 AM. Do any of those work for you, or would you prefer a different day?✓✓
the 8th
Saturday the 8th works great! Which time would you prefer, 11:00 AM, 1:00 PM, or 2:00 PM?✓✓
1
1:00 PM on Saturday, August 8th, perfect! What procedure are you interested in discussing at the consultation?✓✓
ivf
Great. Let me get that booked for you!✓✓
Silvana
Plastic surgery practice · Tijuana, MXPilot
Concierge agent for a surgeon whose patients research heavily before they ever call. Silvana handles procedure questions, pre-consult screening, and scheduling. During pre-launch testing I caught and fixed a knowledge-base loader bug that could have surfaced wrong clinical information. That is the reason I gate every launch behind a safety review, and the reason this one shipped late instead of wrong.
Channels
Voice + WhatsApp Business
Stack
LiveKit, n8n, Twilio subaccount architecture (isolated per clinic)
Hard part
Clinical accuracy on procedures where wrong answers create liability. Every KB doc versioned and reviewed before the agent can serve it
Matteo
Outbound sales agent · clinic outreachLive
The reverse problem: not answering calls, making them. Matteo runs outbound calls to clinics, opens in the right language, qualifies interest, handles objections, and books a demo on the calendar, then follows up over WhatsApp. Built on a 21-file knowledge pack: system prompt, conversation flows, structured data files, and a full test-scenario suite. That is what "building an agent" means in my shop: documented, testable, and maintainable by whoever comes after me.
Channels
Outbound voice + WhatsApp
Deliverable
Complete agent knowledge pack: prompts, flows, JSON data, test scenarios
The other half of the sales pair. Claudia picks up inbound calls from people who are just finding out what this is: what it does, what it costs, how it fits their practice. She answers from a governed knowledge base in either language, and when the caller is ready she books the demo on the spot instead of ending with a "call us back sometime."
The stack is LiveKit for voice, n8n for orchestration, WhatsApp Business API through Twilio, and Dockerized deployment on a VPS I manage. The process is what twenty years of enterprise project delivery looks like applied to a two-week agent build.
1. Discovery with the actual staffHow does the front desk really handle calls today? What questions come in, what breaks, what can never be gotten wrong. In Spanish or English, on-site or remote.
2. Knowledge base before personaA curated, versioned set of bilingual documents the agent is allowed to answer from. If it's not in the KB, the agent escalates. It doesn't improvise about your prices or your medical procedures.
3. Test scenarios before go-liveEvery build ships with a written test suite: happy paths, angry callers, edge cases, the caller who switches languages mid-sentence. Launches are gated on passing it.
4. Operate, don't abandonMonitoring and alerting through n8n, isolated infrastructure per client, and a real data-processing agreement when patient data is involved. I've negotiated DPAs with clinic lawyers; most freelancers won't touch that.
Who's building this
An enterprise PM who is also a nurse.
I spent 20+ years delivering global transformation programs, including BPO transformation work across 20+ countries at Genpact with $9M+ in documented business value. I'm also a licensed vocational nurse, which is why clinics trust me with the phone line their patients call.
Fully bilingual (English / Mexican Spanish), based on the San Diego–Tijuana border, working with cross-border healthcare practices where the patient may open in either language and the agent has to keep up.
PMP · Six Sigma Black Belt · CSM · LVN
Contact
Want an agent like this on your line?
Tell me what calls you're missing. I'll tell you honestly whether an agent is the right fix, and show you a working demo before you commit to anything.