added views

dbt_project.yml

@@ -44,6 +44,10 @@ models:
         +meta:
           contains_pii: true
           compliance_framework: 'HIPAA'
+    views:
+      +materialized: view
+      +schema: views
+      +tags: ['views']
 
 seeds:
   medflow_analytics:

models/views/_views.yml

@@ -0,0 +1,55 @@
+version: 2
+
+models:
+  - name: vw_patient_summary_deidentified
+    description: >
+      De-identified patient summary view on top of mart_patient_360.
+      Strips all PII/PHI fields so clinical analysts can safely query
+      patient demographics, encounters, and diagnoses without HIPAA-restricted access.
+    columns:
+      - name: patient_hash_id
+        description: "MD5 hash of patient name for anonymous linkage"
+      - name: date_of_birth
+        description: "Patient date of birth"
+      - name: age
+        description: "Calculated patient age in years"
+      - name: diagnosis_code
+        description: "Diagnosis code from the encounter"
+
+  - name: vw_department_daily_census
+    description: >
+      Daily department occupancy snapshot aggregated from mart_department_utilization.
+      Shows active patient and encounter counts per department per day.
+    columns:
+      - name: department_id
+        description: "Department identifier"
+      - name: department_name
+        description: "Department name"
+      - name: floor
+        description: "Building floor"
+      - name: cost_center
+        description: "Department cost center"
+      - name: census_date
+        description: "Date of the census snapshot"
+      - name: active_patients
+        description: "Count of distinct patients active on this day"
+      - name: active_encounters
+        description: "Count of distinct encounters active on this day"
+
+  - name: vw_provider_readmission_overview
+    description: >
+      Provider-level readmission summary from mart_provider_scorecard.
+      Aggregates total encounters, readmissions, and readmission rate per provider.
+    columns:
+      - name: attending_physician_id
+        description: "Provider identifier"
+      - name: primary_diagnosis_code
+        description: "Primary diagnosis for the encounter group"
+      - name: department_id
+        description: "Department identifier"
+      - name: total_encounters
+        description: "Total distinct encounters for this provider"
+      - name: total_readmissions
+        description: "Total distinct 30-day readmission encounters"
+      - name: readmission_rate_pct
+        description: "Readmission rate as a percentage"

models/views/vw_department_daily_census.sql

@@ -0,0 +1,42 @@
+{{ config(
+    materialized='view',
+    tags=['views']
+) }}
+
+/*
+    View: vw_department_daily_census
+
+    Use case: Daily department occupancy snapshot for operations dashboards.
+    Counts active patients per department on each calendar day based on
+    admission and discharge dates from mart_department_utilization.
+*/
+
+with utilization as (
+
+    select * from {{ ref('mart_department_utilization') }}
+
+),
+
+final as (
+
+    select
+        department_id,
+        department_name,
+        floor,
+        cost_center,
+        admission_date as census_date,
+        count(distinct patient_id) as active_patients,
+        count(distinct encounter_id) as active_encounters
+    from utilization
+    where discharge_date is null
+       or discharge_date >= admission_date
+    group by
+        department_id,
+        department_name,
+        floor,
+        cost_center,
+        admission_date
+
+)
+
+select * from final

models/views/vw_patient_summary_deidentified.sql

@@ -0,0 +1,43 @@
+{{ config(
+    materialized='view',
+    tags=['views', 'deidentified'],
+    meta={
+        'contains_pii': false,
+        'owner': 'clinical-analytics',
+        'use_case': 'De-identified patient summary for clinical and analytics teams'
+    }
+) }}
+
+/*
+    View: vw_patient_summary_deidentified
+
+    Use case: Provides a de-identified patient summary on top of mart_patient_360.
+    Strips all PII/PHI fields (name, SSN, phone, email, address) so that clinical
+    analysts and data scientists can query patient encounter and diagnosis data
+    without requiring HIPAA-restricted access to the marts_pii schema.
+*/
+
+with patient_360 as (
+
+    select * from {{ ref('mart_patient_360') }}
+
+),
+
+final as (
+
+    select
+        -- Masked patient identifier (hashed for linkage without exposing PII)
+        md5(cast(full_name as varchar)) as patient_hash_id,
+
+        -- Demographics (non-PII)
+        date_of_birth,
+        floor(datediff('year', date_of_birth, current_date)) as age,
+
+        -- Clinical
+        diagnosis_code
+
+    from patient_360
+
+)
+
+select * from final

models/views/vw_provider_readmission_overview.sql

@@ -0,0 +1,41 @@
+{{ config(
+    materialized='view',
+    tags=['views']
+) }}
+
+/*
+    View: vw_provider_readmission_overview
+
+    Use case: Quick provider-level readmission summary for quality reporting.
+    Aggregates encounter counts and readmission counts per provider from
+    mart_provider_scorecard.
+*/
+
+with scorecard as (
+
+    select * from {{ ref('mart_provider_scorecard') }}
+
+),
+
+final as (
+
+    select
+        attending_physician_id,
+        primary_diagnosis_code,
+        department_id,
+        count(distinct encounter_id) as total_encounters,
+        count(distinct readmission_encounter_id) as total_readmissions,
+        round(
+            count(distinct readmission_encounter_id)::numeric
+            / nullif(count(distinct encounter_id), 0) * 100,
+            2
+        ) as readmission_rate_pct
+    from scorecard
+    group by
+        attending_physician_id,
+        primary_diagnosis_code,
+        department_id
+
+)
+
+select * from final