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Khaled Zidan

Healthcare · Retail & Supply Chain Analytics · Business Intelligence · Analytics Engineering

I build governed analytics systems that connect source data, business logic, semantic models, validation, and decision support — not just dashboards.

Healthcare Analytics Retail & Supply Chain Analytics Business Intelligence Analytics Engineering

Power BI SQL Python PostgreSQL GitHub Actions FHIR

LinkedIn · Newest: Warehouse & Inventory BI · Healthcare Interoperability Platform · All Repositories


🚀 Latest Featured Project — Enterprise Retail Warehouse & Inventory Intelligence

Open retail data → governed inventory analytics → Python & SQLite → dimensional modeling → a complete eight-page Power BI report.

Original Enterprise Retail Inventory Intelligence Power BI Executive Overview dashboard

Explore the full project →  ·  View all 8 dashboard pages  ·  Read the case study  ·  Explore the engineering

Power BI & semantic modeling Analytical scope Engineering and delivery
8 pages · 112 visuals 40 stores · 2,326 products Python + executable SQLite
51 DAX measures · 18 relationships 5 dimensions · 4 facts Reproducible sample + GitHub Actions

The project retains the original historical Power BI report, its source-controlled PBIP / PBIR / TMDL, all eight real screenshots, licensed public retail RAW datasets, historical analytical tables, and a separately executable Python/SQLite simulation and validation pipeline.

Evidence-based modeling: it distinguishes observed sales and returns (OBS) from simulated inventory, service and supplier flows (SIM) and exploratory stock signals (EXP). The reconstructed simulation is not identical to the historical scenario; Power BI Desktop refresh remains to be verified independently.

Browse the evidence map · See CI checks · Open the native Power BI project


What I Build

I work at the intersection of healthcare domain knowledge, retail and supply-chain operations, business intelligence, data analytics, and analytics engineering.

My projects typically follow this pattern:

Source → Data Quality → Canonical Model → SQL / Python → Semantic Model → Governed KPIs → BI Delivery → Independent Validation → Decision Support

The goal is not to make a chart look impressive. The goal is to make the number behind the chart defensible.

That means I consistently focus on:

  • explicit analytical grain before aggregation;
  • governed KPI definitions and ratio-of-totals logic;
  • missing / suppressed / unavailable values that remain semantically distinct from zero;
  • independent reconciliation across SQL, Python, DAX, Excel, or source artifacts;
  • preservation of source anomalies instead of silently “cleaning” them away;
  • lineage, reproducibility, tests, and CI as part of analytics delivery;
  • clear boundaries between descriptive evidence and unsupported causal claims.

Evidence at Scale

These are not generic demo claims — they come from implemented, documented projects in this GitHub account.

Project Selected validated engineering evidence
Enterprise Retail Warehouse & Inventory Intelligence 8 native Power BI pages · 112 visuals · 51 DAX measures · 18 semantic relationships · 40 stores / 2,326 products · licensed public RAW + Python/SQLite + tested sample CI · case study
Healthcare Interoperability & Claims Intelligence CMS Blue Button/FHIR pipeline · OAuth 2.0 + PKCE · PostgreSQL · 94 regression tests · 22 business tables · 50 relationships · 7-page PBIR report
Healthcare Data Governance & Quality Control Center 2,801,660 published profiles · 70,052,393 represented line items · 19 governed DQ rules · SQL/Python/DAX reconciliation · 7-page Power BI delivery
CMS Transparency in Coverage PUF Analytics 4,956 plans · 348 issuers · 30 states · 43 DAX measures · 11 PBIR pages · 63 DAX reconciliation checks / 0 failures
Hospital360 5,000 synthetic patients · 5,515,928 healthcare RAW rows · 36-month enterprise extension · PostgreSQL RAW→STAGING→ANALYTICS · 13-page Power BI report
Online Retail Growth & Customer Intelligence 1,044,848 canonical transaction rows · RFM + cohorts + retention · 50 DAX measures · 10 Power BI pages · SQL-driven Excel management outputs
Regional Sales Performance Analytics 18-page analytical engine · LFL / AST / recovery / lifecycle analysis · XLSX export · reproducible offline frontend · Tauri/Rust desktop packaging architecture

Other Flagship Projects

🏥 Healthcare Interoperability & Claims Intelligence Platform

View repository →

My most complete interoperability and claims-engineering project.

CMS Blue Button sandbox → OAuth 2.0 + PKCE → FHIR Patient/Coverage/EOB → governed RAW → canonical claims grains → PostgreSQL analytics → TMDL semantic model → PBIR report → CI validation

Why it matters: healthcare claims data contains multiple nested grains. The project preserves claim, item, diagnosis, procedure, care-team, supporting-information, terminology, and financial meaning rather than flattening everything into one misleading table.


🛡️ Healthcare Data Governance & Quality Control Center

View repository →

A governance-first implementation built on public CMS Medicare data.

RAW → STAGING → ANALYTICS + GOVERNANCE → DQ rules → lineage → governed KPI contracts → SQL/Python reconciliation → source-controlled Power BI

Highlights include source fingerprinting, field-level lineage, preserved source conflicts, weighted utilization/payment metrics, and explicit publication boundaries.


🧾 CMS Transparency in Coverage PUF Analytics

View repository →

A payer-transparency analytics implementation where availability is modeled as data, not guessed from blanks.

The project separates issuer and plan grains, preserves source anomalies, uses ratio-of-totals KPI semantics, and reconciles the saved Power BI model against independent Python baselines.


🇸🇦 Saudi Healthcare Analytics 2021–2024

View repository →

Official Saudi Ministry of Health yearbooks transformed into a governed canonical model across capacity, activity, workforce, and regional healthcare resources.

Python discovery → canonical CSVs → SQL Server star schema → DAX semantic model → 7-page PBIR report → layered validation


🏨 Hospital360

View repository →

A production-style synthetic hospital analytics platform combining:

clinical activity · claims · finance · budget · workforce · operations · capacity · technology

The project uses PostgreSQL, dimensional modeling, explicit fact grains, SQL regression, Python analytics, Power BI, and scale testing up to a 20K synthetic source generation benchmark.


🛍️ Online Retail Growth & Customer Intelligence

View repository →

End-to-end customer and growth analytics built from the public UCI Online Retail II dataset.

Transaction governance → SQL Server star schema → repeat behavior → RFM → acquisition cohorts → retention → cancellations → Power BI → SQL-driven Excel management outputs


Specialized Analytics Systems

Domain Project Core focus
Warehouse & Distribution Enterprise Retail Warehouse & Inventory Intelligence Store/DC stock intelligence · observed demand/returns · simulated service and supplier execution · 8-page Power BI PBIP
Reconciliation Transaction Reconciliation & Exception Intelligence Explainable 8-level matching · discrepancy exposure · anomaly rules · prioritized review queues
Regional Performance Regional Sales Performance Analytics Budget gap · LFL · traffic · weighted AST · recovery scenarios · lifecycle · Tauri desktop architecture
Category Management Pharmacy Category Management Analytics Margin · assortment · inventory risk · supplier service · pricing · descriptive promotion analysis
Inventory Pharmacy Inventory & Expiry Analytics 90-day demand · stock cover · expiry · dead/slow stock · deterministic generation
Product / Assortment Pharmacy Product Analytics SKU status · TGM · zero-sales risk · top-N · supplier dependency
Prescription Operations Prescription Operations Analytics Multi-branch workflow analytics · completion · backlog · shortages · publication safety
E-commerce Pharmacy E-commerce Category Analytics Digital category performance · commercial KPIs · decision support
Branch Performance Branch Performance KPI Dashboard Branch sales · customers · basket · employee/category performance

My Analytics Engineering Standard

I use a simple rule:

If a KPI cannot survive grain review, reconciliation, and evidence review, it is not ready for a dashboard.

1. Grain before aggregation

Every fact table starts with an explicit business grain and key contract.

2. Data quality before storytelling

Duplicates, orphan keys, missing mappings, availability states, impossible values, and source conflicts stay visible.

3. One definition per KPI

SQL, Python, DAX, Excel, and UI outputs should reconcile to the same governed business meaning.

4. Separate facts that belong at different grains

Claims are not flattened into claim items. Finance is not joined directly to operations. Issuer metrics are not duplicated across plan rows.

5. Preserve uncertainty

Unknown, unavailable, suppressed, mapping-pending, zero, and not-applicable are different analytical states.

6. Evidence over decoration

Screenshots, dashboards, or presentation graphics never override the source, model, tests, or reconciliation evidence.

7. Automate validation

Where possible, repositories include regression tests, reproducibility checks, source/generated parity, privacy controls, and GitHub Actions quality gates.


Technical Stack

BI & Semantic Modeling

Power BI
DAX
Power Query
PBIP
PBIR
TMDL
Excel

Data & Engineering

SQL Server
PostgreSQL
SQLite
Python
pandas
NumPy
openpyxl
Dimensional Modeling

Healthcare Data

FHIR
CMS Blue Button
Claims Analytics
Payer Transparency
Healthcare Governance
OAuth 2.0 / PKCE

Delivery & Quality

Git / GitHub
GitHub Actions
HTML / CSS / JavaScript
Chart.js
Tauri / Rust
Regression Testing
Data Reconciliation


Domain Perspective

My background combines pharmacy / healthcare domain knowledge with business and analytics training.

That helps me work on problems where technical correctness alone is not enough — the analyst also needs to understand the operational meaning of claims, utilization, warehouse and distribution-center inventory, replenishment, commercial performance, supplier service, customer behavior, and management KPIs.

Pharmacy background · MBA · Data Analyst Associate · Healthcare / BI / Analytics Engineering focus


What I Am Interested In

I am focused on full-time opportunities in:

Data Analytics · Business Intelligence · Healthcare Analytics · Retail / Supply Chain / Inventory Analytics · BI / Reporting · Commercial & Performance Analytics · Revenue Cycle / Claims Analytics · Analytics Engineering

Especially roles where Power BI + SQL + Python + domain knowledge + data quality + decision support are used together.


Build the model correctly. Validate the number independently. Then tell the story.

LinkedIn · Latest Warehouse & Inventory Project · Repositories

Pinned Loading

  1. online-retail-growth-customer-intelligence online-retail-growth-customer-intelligence Public

    End-to-end retail analytics portfolio using SQL Server, Python, Power BI, DAX, RFM, cohort analysis and management Excel outputs.

    Python 1

  2. pharmacy-category-management pharmacy-category-management Public

    Production-style pharmacy category management analytics portfolio using SQL Server, Python, Power BI/DAX, inventory, supplier, assortment and commercial analytics.

    Python

  3. Hospital360 Hospital360 Public

    Production-style hospital analytics platform designed around real-world healthcare performance use cases, covering patient activity, finance, workforce, operations, and technology using PostgreSQL,…

    Jupyter Notebook 1

  4. regional-sales-analytics-portfolio regional-sales-analytics-portfolio Public

    Regional sales performance analytics portfolio covering budget gaps, LFL analysis, intervention impact, channel contribution, AST, customer count, and data quality.

    HTML

  5. saudi-healthcare-analytics saudi-healthcare-analytics Public

    End-to-end Saudi healthcare analytics using official MOH statistics, SQL Server, Power BI, DAX, PBIP/PBIR and governed KPI validation.

    Python

  6. transaction-reconciliation-anomaly-detection-analytics transaction-reconciliation-anomaly-detection-analytics Public

    Transaction reconciliation, exception analytics and anomaly detection using Python, SQL, fuzzy matching, automated tests and Power BI-ready outputs.

    Python