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Ward Weistra 🔥

@wardweistra.nl
327 followers 709 following 124 posts

Clinical informaticist and PhD candidate computable guidelines at @iknl.nl, the Netherlands Comprehensive Cancer Organisation. Formerly: Product at Fire.ly and content lead #FHIR DevDays.com. 🎓 MSc Bioinformatics 🤸 Parkour

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Ward Weistra 🔥 @wardweistra.nl · 09/09/2026
#CQL is an open language for clinical logic. Quality measures. Decision support. Computable guidelines. Cohorts. Readable for authors, executable for systems. Older than the #FHIR boom. Not married to FHIR either. But most energy is on CQL with FHIR now, via big quality measurement efforts.
CQL on FHIR is in balloting now, CQL version 2 has been released last month as a standard for trial use.
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Ward Weistra 🔥 @wardweistra.nl · 03/09/2026
We're hiring a FHIR specialist at @iknl.nl. The job is to help the Netherlands Cancer Registry receive care data in FHIR + deliver it back out. Intake, validation, processing, APIs, all that fun stuff 🙂 32–36 hrs, Eindhoven/hybrid. Dutch. Apply by 20 Sept. vacatures.iknl.nl/vacaturebesc... #FHIR
vacatures.iknl.nl
Software developer/FHIR specialist
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Ward Weistra 🔥 @wardweistra.nl · 16/01/2026
Grateful to get regular invites from JAMIA to review and to be able to contribute to science in this way! #JAMIAOpen #JAMIA
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Ward Weistra 🔥 @wardweistra.nl · 13/01/2026
🚨 One week to go! Join our webinar: “Implementing the FHIR Community Process (FCP) with Simplifier.” 100+ registered already—clearly there’s demand for practical FCP guidance. If you create, validate, or govern FHIR IGs, don’t miss it. #FHIR #FCP #Interoperability fire.ly/webinar-impl...
An announcement of the FHIR Community Process webinar on January 20th, including the speakers Diego Kaminker, Mattias Colliander and Ward Weistra
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Oliver Egger @oliveregger.bsky.social · 15/11/2025
Daniel Vreeman from HL7: Despite all the progress we've made in healthcare interoperability, too often, people still move faster and further than their health information. blog.hl7.org/building-the...
blog.hl7.org
Building the Standards Infrastructure for Healthcare AI: Lessons from the Interoperability Journey
Reflections from HL7 Chief AI Officer Dan Vreeman from ADAPT 2025 Conference - Building the Standards Infrastructure for Healthcare AI: Lessons from the Interoperability Journey
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Ward Weistra 🔥 @wardweistra.nl · 01/12/2025
At the @hl7europe.bsky.social Working Group Meeting in Cologne this week. 🇪🇺 Here Giorgio explains how HL7 Europe is the third approved #FHIR Community Process participant. Want to learn more about the #FCP? See my recent article on it here 👉 www.linkedin.com/pulse/why-fc...
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HL7 Europe @hl7europe.bsky.social · 13/11/2025
We have published three new HL7 Europe #FHIR Implementation Guides designed for supporting the #EHDS: HL7 Base and Core FHIR IGs (STU) for FHIR release 4 and 5, and the HL7 Europe Extensions package. To learn more click here: 👉https://shorturl.at/xIDtO or come to our WGM in Cologne and join us.
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HL7 Europe @hl7europe.bsky.social · 16/09/2025
We’re thrilled to welcome you to Hospitals on #FHIR User Days 2025! Preview the just-released preliminary agenda and catch your first glimpse at keynotes, interactive sessions, real-life use cases and more that will shape the future of healthcare through FHIR and digital transformation practices.
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Ward Weistra 🔥 @wardweistra.nl · 18/09/2025
A very preliminary list from the #HL7WGM in Pittsburgh right now on which #FHIR resources have been proposed to move out of the core specification with the R6 version and where they may go.
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Ward Weistra 🔥 @wardweistra.nl · 18/07/2025
🌏 Based on the #StateofFHIR survey, we now have a summary for each country that participated for where they stand with FHIR adoption: simplifier.net/jurisdictions Go checkout the countries that you're familiar with and let me know if the summary is helpful! #FHIR #Interoperability
simplifier.net
SIMPLIFIER.NET
FHIR Registry
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Ward Weistra 🔥 @wardweistra.nl · 14/07/2025
The 2026 May working group meeting from HL7 International is coming to Rotterdam 🇳🇱 www.linkedin.com/posts/sticht... #HL7 #FHIR
linkedin.com
De Health Level Seven International May Working Group Meeting 2026 komt naar Rotterdam! | HL7 Nederland
De Health Level Seven International May Working Group Meeting 2026 komt naar Rotterdam! 16 t/m 22 mei zal de SS Rotterdam het kloppend hart van de HL7 Community zijn. Met natuurlijk ook veel aandacht...
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Centro Nacional en Sistemas de Información en Salud @censchile.bsky.social · 01/07/2025
🌐 ¡El informe internacional 2025 State of FHIR Survey Report reconoció a Chile por su compromiso con la IO clínica y la adopción del estándar FHIR! Revísalo en hl7chile.cl/wp-content/u... 🙌🏼 En CENS continuamos trabajando para que los sistemas de salud estén más conectados.
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Ward Weistra 🔥 @wardweistra.nl · 10/07/2025
This is one of the most insightful graphs in the #StateofFHIR report from this year, highlighting what are the most common use cases for #FHIR around the world! 💡 Many other insights you can find in the summary and full report here: fire.ly/blog/the-sta...
The most common use cases for FHIR from the 2025 State of FHIR report, as indicated by experts around the world.
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Ward Weistra 🔥 @wardweistra.nl · 24/06/2025
Maybe universal interoperability isn’t all it’s cracked up to be 😄 @xkcd.com xkcd.com/3105/ #Interoperability #FHIR
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Ward Weistra 🔥 @wardweistra.nl · 24/06/2025
🚀 Excited to announce the release of 𝗙𝗼𝗿𝗴𝗲 2025.1! Highlights: 👉 Element-level extensions (Obligation & Translation) and customizable extension visibility 👉 Precise control over what syncs to Simplifier Read more: simplifier.net/organization... #FHIR #DigitalHealth #Interoperability
simplifier.net
⭐ Forge 2025.1: Extensions on elements and controlling which files are synchronized - SIMPLIFIER.NET
FHIR Registry
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Florian Hehlen @zenwork.eurosky.social · 03/06/2025
AI and LLM integration are one big challenge in #digitalhealth that promises to unlock many things. Huge progress is happening but cost (time and money) are still a big hurdle to reach usable solutions. #fhirdevdays #fhir
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Ward Weistra 🔥 @wardweistra.nl · 02/06/2025
Ready for all the attendees to arrive tomorrow morning! #FHIRDevDays
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Ward Weistra 🔥 @wardweistra.nl · 20/05/2025
Join me for a tour through Amsterdam, showcasing the highlights for the #FHIRDevDays program in two weeks! 🌷 👉 4 days of 120+ sessions! 👉 8 amazing keynotes, incl. @drishitabarua.bsky.social @maxschrems.bsky.social @grahamegrieve.bsky.social 👉 All #FHIR experts in one place #Amsterdam750
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Ward Weistra 🔥 @wardweistra.nl · 19/05/2025
📅 Don't miss tomorrow's Simplifier Product Update Webinar! • New license plans & 60-day free Professional Plan trial • Online resource editor demo • Private FHIR packages • Latest updates to Simplifier, Forge & Firely Terminal 🔥 #FHIR #HealthIT #Interoperability us02web.zoom.us/webinar/regi...
us02web.zoom.us
Welcome! You are invited to join a webinar: What's new in Simplifier & Forge. After registering, you will receive a confirmation email about joining the webinar.
A webinar for all Simplifier.net customers, showcasing the latest developments in the two platforms, informing on the upcoming developments and a forum for Q&A and product suggestions.
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Ward Weistra 🔥 @wardweistra.nl · 15/05/2025
Simplifier.net is evolving! 🚀 Exciting changes June 1st for the #FHIR community! 👇 ✨ New 60-day FREE trial (Forge, Editors, QC)! ✨ FREE Trainer License + student vouchers! 📚 ✨ Show organizational affiliation & collaborate! 🤝 Making #Interoperability easier! 🔥 simplifier.net/organization...
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Ward Weistra 🔥 @wardweistra.nl · 14/05/2025
Are you missing some #FHIR in your feed? 🔥 I'm maintaining a list of already 36 experts from the HL7 community over here: go.bsky.app/3JcB4Td Follow them all at once to stimulate that #healthit #interop conversation! 💬
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Ward Weistra 🔥 @wardweistra.nl · 12/05/2025
My colleague Alexander Zautke gave an amazing presentation this morning on the #FHIR journey from AdapCare, from complying to regulation to wild innovation. He also gave a sneak peek of the upcoming #StateOfFHIR survey: FHIR is entering health it regulation everywhere 🐙 #HealthIT #Interop
Alexander presents a sneak peek of the State of FHIR Survey on data exchange regulation
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Ward Weistra 🔥 @wardweistra.nl · 12/05/2025
Time for some updates from the #HL7WGM in Madrid this week! 🇪🇸 Let's start with the Connectathon over this weekend. My main focus was the #EHDS track with @hl7europe.bsky.social and comparing multiple profiles side-by-side for compatibility. I hacked together a little application to make a start.
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Ward Weistra 🔥 @wardweistra.nl · 06/05/2025
𝗛𝗲𝗮𝗱𝗶𝗻𝗴 𝘁𝗼 𝗠𝗮𝗱𝗿𝗶𝗱! 🇪🇸 Attending the HL7 International Working Group Meeting & FHIR Connectathon next week (May 10-16) — excited to help shape the future of health data interoperability. My focus areas: #EHDS developments, aligning #FHIR profiles across 🇪🇺 EU Member States with @hl7europe.bsky.social
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ICT&health @icthealth.nl · 05/05/2025
“AI isn’t the first step — data is.” Dr. Carina Vorisek stresses the need for FHIR, SNOMED and clean, structured data before AI can truly support healthcare. #Healthcare #AI #FHIR #SNOMED #digitalhealth #interoperability
icthealth.org
AI? Let’s first talk about FHIR, SNOMED, quality, and bias | ICT&health Global
Interoperability is foundational for AI in healthcare. Most AI applications are currently still siloed, developed, and deployed within individual institutions.
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Ward Weistra 🔥 @wardweistra.nl · 02/05/2025
📹 Just made a video breaking down the Forge vs FHIR Shorthand debate! 🔧 Whether you're team GUI or team code, choosing the right FHIR modeling tool matters. Check out my detailed analysis in the original article: www.linkedin.com/pulse/choosi... #FHIR #HealthIT #Interoperability #FSH
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Josh Mandel, MD @josh.mandel.md · 01/05/2025
New Perspective: The EHR Association's push to remove foundational data access is misguided & harmful for health innovation. www.linkedin.com/pulse/ehr-as...
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Ward Weistra 🔥 @wardweistra.nl · 01/05/2025
FHIR version R6 is going to be the first big new normative release after the widely adopted R4. 🗳️ 3rd ballot release of R6 for the May working group meeting is available now: hl7.org/fhir/6.0.0-b... 🗓️ After that, first normative ballot in Jan 2026! #FHIR #Interop #HealthIT #HealthTech
hl7.org
Ballot-intro - FHIR v6.0.0-ballot3
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Ward Weistra 🔥 @wardweistra.nl · 29/04/2025
🔐 Privacy champion @maxschrems.bsky.social joins #FHIRDevDays 2025! The renowned digital rights activist behind landmark EU privacy cases & founder of @noyb.eu will explore the future of healthcare data privacy in our changing geopolitical landscape. Early bird ends May 1! 🐦 #FHIR #DigitalPrivacy
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Josh Mandel, MD @josh.mandel.md · 25/04/2025
What if, instead of pre-specifying every data field and every possible workflow step, we could enable conversations between capable systems? Prior auth and beyond! youtu.be/BRX7HUBlEqw?... www.linkedin.com/pulse/conver...
youtu.be
Live Demo: Conversational Interop for Prior Auth (LLMs, A2A, and MCP)
YouTube video by Josh Mandel
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Ward Weistra 🔥 @wardweistra.nl · 25/04/2025
🇪🇺 Meet our EHDS experts at FHIR DevDays 2025! Itte Overing (ICTRecht) will decode the legal framework while Rutt Lindström (TEHIK) explores European FHIR Implementation Guides. #EHDS #FHIR @hl7europe.bsky.social
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Ward Weistra 🔥 @wardweistra.nl · 24/04/2025
🌍 Our second keynote speaker at FHIR DevDays 2025 is the @who.int's Carl Leitner! He'll showcase how FHIR and the International Patient Summary enable healthcare delivery to millions of Hajj pilgrims in Saudi Arabia 🇸🇦 #FHIRDevDays #FHIR #IPS
Carl Leitner of the World Health Organization is a keynote speaker at the FHIR DevDays conference
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Ward Weistra 🔥 @wardweistra.nl · 23/04/2025
🎤 Excited to announce Donald Rucker as keynote speaker at #FHIRDevDays 2025! Former U.S. National Coordinator for Health IT and current Chief Strategy Officer at 1upHealth will share insights on "data beyond the EMR" and FHIR's role in high-compute healthcare.
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grahamegrieve.bsky.social @grahamegrieve.bsky.social · 22/04/2025
Lets not get carried away here
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Ward Weistra 🔥 @wardweistra.nl · 21/04/2025
Last night I submitted a new version (3.0.0) of the Firely Browser extension for FHIR to the Chrome and Firefox extension marketplace! Chrome one is still pending, but Firefox version is available now. 🔥 It's open source and all the links and features are here: github.com/FirelyTeam/f... #FHIR
github.com
GitHub - FirelyTeam/firely-browser-extension: Chromium browser extension for working with FHIR
Chromium browser extension for working with FHIR. Contribute to FirelyTeam/firely-browser-extension development by creating an account on GitHub.
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Ward Weistra 🔥 @wardweistra.nl · 21/04/2025
Grahame and Joost seem to be getting somewhere in translating #OpenEHR data model to #FHIR logical models: build.fhir.org/ig/FHIR/open... (GitHub here: github.com/FHIR/openehr...)
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Ward Weistra 🔥 @wardweistra.nl · 16/04/2025
A nice opportunity to create an HL7 FHIR starter pack: go.bsky.app/3JcB4Td (I finally figured out how 😄) #HL7 #FHIR #🔥
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Ward Weistra 🔥 @wardweistra.nl · 16/04/2025
Hey look, @hl7europe.bsky.social is here too now! And here's a clickable link 😉 info.hl7.org/may-2025-wgm #HL7 #FHIR
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Ward Weistra 🔥 @wardweistra.nl · 08/04/2025
🔧 Let's talk FHIR modeling tools! You've basically got two fantastic options: Forge (for visual modeling) and FHIR Shorthand (for code-based editing). Both are great, just different approaches. Full article: www.linkedin.com/pulse/choosi... Summary in 🧵 #FHIR #HealthIT
linkedin.com
Choosing Between Forge and FHIR Shorthand (FSH): A Strategic Guide for Modeling FHIR Profiles
When modeling FHIR resources, you have two powerful tools at your disposal: Forge and FHIR Shorthand (FSH). Each has distinct strengths that cater to different modeling preferences and workflows.
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ThisIsPatrick @patrickwerner.de · 31/03/2025
See you at the #FHIR devdays! #FHIRDevDays
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Ward Weistra 🔥 @wardweistra.nl · 31/03/2025
You're the first to know: the first draft of the #FHIRDevDays program has just been posted! www.devdays.com/program-2025 Look at those wonderful speakers! 🔥
devdays.com
Program 2025 – FHIR DevDays
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Ward Weistra 🔥 @wardweistra.nl · 31/03/2025
Am I the only one who absolutely starts to hate #passkeys? Everytime it's a dance to figure out which one or more passkeys I used with service X. Is it my phone, Bitwarden, one of my yubikeys, my Mac or chrome profile? It's 'Log in with Google/Facebook/etc' all over again...
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Ward Weistra 🔥 @wardweistra.nl · 22/03/2025
This looks very interesting! Anyone used Ballerina for FHIR data/API mapping?
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Ward Weistra 🔥 @wardweistra.nl · 21/03/2025
🗣️ Healthcare professional with an opinion about the software you get to use every day? Please help @bkaney.bsky.social with filling in this quick 4-step survey on it: forms.gle/n4Rf3hHrwR2WmWe77 Will be incorporated in his #FHIRDevDays presentation in June. #healthcare #software
forms.gle
Healthcare Information System User Experience Survey
Thank you for taking the time to participate in this survey. We are investigating the state of healthcare information systems and how well they are designed to improve patient care. Your responses will help us understand user experiences and perceptions regarding the system’s usability, design, and integration with the broader care team. All responses are anonymous and will be used solely for research purposes.
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Ward Weistra 🔥 @wardweistra.nl · 18/03/2025
My wife's new book on the mental side of running is out now! (In Dutch) #running #science #sportscience
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Ward Weistra 🔥 @wardweistra.nl · 10/03/2025
🏃‍♀️ My wonderful wife and science writer Mariska van Sprundel, just dropped a pre-publication piece from her upcoming book, "Door de Barrière" featuring athlete Roy Hoornweg: www.nemokennislink.nl/publicaties/i… #running #science #runningscience
nemokennislink.nl
Iets onverwachts - NEMO Kennislink
Voor haar nieuwste boek Door de barrière sprak hardloper en wetenschapsjournalist Mariska van Sprundel met Roy Hoornweg. Hoornweg deed in 2022 een gooi naar het wereldrecord marathonlopen op de loopband. Van Sprundel sprak met hem over motivatie en doorzettingsvermogen.
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Ward Weistra 🔥 @wardweistra.nl · 02/03/2025
Rik Smithies has the best #FHIR swag webshop: www.redbubble.com/people/nprogram/s… My favourites are the FHIR Metal-style word logo and the pride rainbow 🌈
redbubble.com
nprogram Shop | Redbubble
nprogram is an independent artist creating amazing designs for great products such as t-shirts, stickers, posters, and phone cases.
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mio42 @mio42.bsky.social · 04/12/2024
👉 Lesetipp! Unser #MIO #DiGAToolkit (simplifier.net/dtk) leistet einen wertvollen Beitrag zum Thema Interoperabilität und wird unter anderem bereits durch die DiGA Oviva genutzt. #MIOs #ePA #DiGA#Interoperabilität #FHIR #DigitalHealth
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Ward Weistra 🔥 @wardweistra.nl · 22/02/2025
Join us at #FHIRDevDays to learn more about the combined future of #FHIR and #OpenEHR, including the outcomes of this task force 👇
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Ward Weistra 🔥 @wardweistra.nl · 22/02/2025
Happy reading for my Dutch friends in healthcare data exchange! www.algemenebestuursdienst.nl/docum… More centralization? Or are we just creating the 15th standards org? 😅 #healthit #standards
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