Add documentation for Total Doctor Visit Count by Facility query

Care/Operations/total_doctor_visit_count_by_facility_kc.md

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+
+# Total Doctor Visit Count by Facility
+
+> Count of completed doctor visit questionnaire responses grouped by facility for patients belonging to a given organization
+
+## Purpose
+
+Counts completed responses to the doctor visit questionnaire (`questionnaire_id = 68`) per facility, scoped to living patients within a specified organization.
+
+## Parameters
+
+| Parameter | Type | Description | Example |
+|-----------|------|-------------|---------|
+| `organization_id` | TEXT | Organization external ID to scope patients (matched against `emr_organization.external_id`) | `'org-uuid-1234'` |
+| `date` | DATE / range | Metabase date filter (typically bound to `emr_questionnaireresponse.created_date`) | `'2026-07-01'` |
+
+---
+
+## Query
+
+```sql
+WITH org_id AS (
+    SELECT emr_organization.id
+    FROM emr_organization
+    WHERE emr_organization.deleted = FALSE
+      --AND emr_organization.external_id::text = {{organization_id}}
+),
+filtered_patients AS (
+    SELECT emr_patient.id
+    FROM emr_patient
+    INNER JOIN org_id ON TRUE
+    WHERE emr_patient.deceased_datetime IS NULL
+      AND emr_patient.organization_cache && ARRAY[org_id.id]::integer[]
+),
+visits AS (
+    SELECT
+        emr_questionnaireresponse.id AS response_id,
+        emr_questionnaireresponse.encounter_id
+    FROM emr_questionnaireresponse
+    INNER JOIN filtered_patients
+        ON filtered_patients.id = emr_questionnaireresponse.patient_id
+    WHERE emr_questionnaireresponse.questionnaire_id = 68
+      AND emr_questionnaireresponse.status = 'completed'
+      AND emr_questionnaireresponse.encounter_id IS NOT NULL
+      --[[AND {{date}}]]
+)
+SELECT
+    facility_facility.name AS facility_name,
+    COUNT(*) AS visit_count
+FROM visits
+INNER JOIN emr_encounter
+    ON emr_encounter.id = visits.encounter_id
+INNER JOIN facility_facility
+    ON facility_facility.id = emr_encounter.facility_id
+   AND facility_facility.deleted = FALSE
+GROUP BY facility_facility.name
+ORDER BY visit_count DESC, facility_facility.name;
+```
+
+## Notes
+
+- **Hardcoded IDs:**
+  - `questionnaire_id = 68` — the doctor visit questionnaire at Karunashraya. Update if the questionnaire id changes.
+- **`organization_id` is required** (no `[[...]]` wrapper) — the query will not run without a value.
+- Results are ordered by visit count descending, then alphabetically by facility name for ties.
+
+*Last updated: 2026-07-15*