You will get a SMART on FHIR EHR integration for Epic, Cerner or Athena in .NET
Top Rated
Top Rated
Project details
You will get a production-ready SMART on FHIR integration that connects your .NET app to Epic, Cerner, Athena or any major EHR. Built by a UK developer with 8+ years of .NET experience, 100% Job Success on Upwork and a recent Epic integration shipped for a US healthcare client.
The most recent build was an ASP.NET WebForms (.NET Framework 4.8) SMART on FHIR app for CliniPaths, a US clinical pathways platform. That covered OAuth2 Authorization Code + PKCE against Epic's R4 sandbox, JWT decoding of the fhirUser claim to resolve the Practitioner FHIR ID, and reads for Patient, Practitioner, Observations, MedicationRequests, AllergyIntolerance and Conditions. Comes with a Loom walkthrough of the live flow.
What separates this from a hello-world FHIR connection is how real-world Epic quirks get handled. Epic strips user/* scopes in the HSWeb redirect. Hyperdrive replaced Hyperspace mid-2024. Public sandbox clinician credentials are deprecated post-Hyperdrive. I know each of these because I hit them. The integration is built using the .well-known/smart-configuration discovery endpoint so it generalises across customer Epic environments without code changes.
The most recent build was an ASP.NET WebForms (.NET Framework 4.8) SMART on FHIR app for CliniPaths, a US clinical pathways platform. That covered OAuth2 Authorization Code + PKCE against Epic's R4 sandbox, JWT decoding of the fhirUser claim to resolve the Practitioner FHIR ID, and reads for Patient, Practitioner, Observations, MedicationRequests, AllergyIntolerance and Conditions. Comes with a Loom walkthrough of the live flow.
What separates this from a hello-world FHIR connection is how real-world Epic quirks get handled. Epic strips user/* scopes in the HSWeb redirect. Hyperdrive replaced Hyperspace mid-2024. Public sandbox clinician credentials are deprecated post-Hyperdrive. I know each of these because I hit them. The integration is built using the .well-known/smart-configuration discovery endpoint so it generalises across customer Epic environments without code changes.
Programming Languages
HTML & CSS, ASP.NET, TypeScriptCoding Expertise
Performance Optimization, Security, DesignWhat's included
| Service Tiers |
Starter
$850
|
Standard
$1,700
|
Advanced
$3,500
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 22 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | - | |
Content Upload | - | - | - |
Responsive Design | - | ||
Source Code | - | - |
Optional add-ons
You can add these on the next page.
Firely HL7 FHIR SDK upgrade
(+ 4 Days)
+$500
dditional EHR vendor (Cerner / Athena / MEDITECH)
(+ 7 Days)
+$1,000
Epic Hyperdrive or Hyperspace EHR Launch embedding
(+ 9 Days)
+$1,400Frequently asked questions
About EHTISHAM
Full Stack| ASP.NET Core | C# | MAUI | Blazor | Angular | SQL | Azure
100%
Job Success
Newcastle upon Tyne, United Kingdom - 7:12 pm local time
**ASP.NET CORE | WEB API | C# | MICROSERVICES | DOCKER | BLAZOR | MAUI | SQL SERVER | AZURE | ANGULAR**
Looking for someone who doesn’t just code, but thinks through problems and delivers solutions that actually work? You’ve found the right developer.
📊 Track Record That Speaks:
🏅 TOP-RATED PLUS
🏆 100% Job Success Rate
⭐ 5-Star Client Reviews
💰 $100k+ Platform Earnings
🔥 40+ Successful Projects
⚡ 4k+ Upwork Hours
🎯 Zero Failed Deliveries
🛠️ Core Tech Stack:
Backend: .NET 9, ASP.NET Core 8, C#, Web API, Microservices
Frontend: Blazor (Server/WASM), Angular 17, JavaScript/TypeScript, Html5, CSS3, Jquery
Database: SQL Server, PostgreSQL, MongoDB, Azure Cosmos DB,Firebase
Cloud: Azure, AWS, Docker, Kubernetes
Payments: Stripe, PayPal, Square, Authorize.Net, Braintree
APIs: REST, GraphQL, SOAP, OAuth 2.0, JWT
Tools: Visual Studio 2022, Git, Azure DevOps, Jira
💡 What Sets Me Apart:
I don’t just write code - I architect solutions. When you’re dealing with complex business requirements, you need someone who can translate abstract concepts into robust, scalable systems.
Recent Wins:
- Built secure payment processing system with Stripe (handling $50k+ monthly)
- Migrated legacy .NET Framework app to .NET 8 (40% performance boost)
- Integrated multi-vendor marketplace with PayPal, Stripe & bank transfers
- Implemented real-time analytics dashboard with SignalR
- Designed Azure-native solutions reducing infrastructure costs by 35%
🎯 Specialized In:
✅ Enterprise Web Applications
✅ Payment Gateway Integration (Stripe, PayPal, Square)
✅ Third-Party API Integration & Development
✅ REST/GraphQL API Development
✅ Cloud-Native Architecture
✅ Database Optimization & Design
✅ Legacy System Modernization
✅ Performance Tuning & Scaling
💳 Payment & Integration Expertise:
-Payment Gateways:Stripe Connect, PayPal Express, Square APIs, Authorize.Net
- Financial APIs: Plaid, Dwolla, banking integrations, cryptocurrency payments
- Third-Party Services: Twilio, SendGrid, AWS SES, Google Maps, social logins
- E-Commerce: Shopping cart integration, subscription billing, marketplace commissions
- Security: PCI compliance, fraud detection, secure tokenization
🏭 Industry Experience:
E-Commerce • FinTech • Healthcare • Real Estate • SaaS • Logistics • Marketplaces
⚡ My Process:
1. Deep Dive - I actually read your requirements (shocking, right?)
2. Smart Planning - Break complex problems into manageable pieces
3. Agile Delivery - Regular updates, no surprises
4. Quality Focus** - Clean code, proper testing, documentation
🌍 Availability:
📍 UTC+1 Timezone
⏰ 30-40 hrs/week
🗣️ Fluent English
📞 Flexible communication
Why Choose Me?
I’ve been where you are. Tight deadlines, complex requirements, budget constraints. I get it. That’s why I focus on delivering solutions that work reliably, scale properly, and don’t break the bank.
Every project gets:
- Detailed technical documentation
- Clean, maintainable code
- Comprehensive testing
- Post-delivery support
- NDA protection
Ready to build something amazing? Let’s talk about your project.
Ehtisham Zaki
Senior .NET Architect & Full-Stack Developer
-----
*Keywords: ASP.NET Core, C#, Blazor, Microservices, Azure, SQL Server, Web API, Angular, Docker, DevOps, Cloud Architecture, Enterprise Applications, Stripe Integration, PayPal API, Payment Processing, Third-Party APIs*
Steps for completing your project
After purchasing the project, send requirements so EHTISHAM can start the project.
Delivery time starts when EHTISHAM receives requirements from you.
EHTISHAM works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff call and EHR app registration review
Quick call to walk through your existing app and EHR strategy. Review or create your Epic / Cerner / Athena app registration with the right audience, scopes, redirect URIs and launch context.
OAuth2 Authorization Code + PKCE flow
SMART on FHIR launch flow built into your app: authorize URL with state and code_challenge, callback handler validating state and exchanging code for tokens, id_token decoded for the fhirUser claim.