A little FHIRPath sandbox
Somebody asked for a way to try FHIRPath expressions against a payload without setting up an engine, so I put…
Using FHIRPath in Invariants Without Shooting Yourself in the Foot
Invariants written in FHIRPath are the mechanism by which profiles enforce rules that go beyond cardinality and datatype. They are…
Typical FHIRPath Expressions Worth Memorizing
A handful of FHIRPath expressions come up on every real implementation, and having them at your fingertips saves the trip…
The Collection Semantics That Surprise You at First
FHIRPath collections behave like flattened set-pipelines, and the four or five behaviors that surprise most people at first are worth…
FHIRPath Basics for Someone Who Knows JavaScript
The first FHIRPath expression a JavaScript developer meets looks familiar and then quietly is not. Patient.name.given looks like a chain…
5 Master Patient Index Features for FHIR-Based Identity Resolution
Identity resolution is the practical job a master patient index does in a FHIR-based stack. The headline is matching, but…
Top 7 Code System Tools Every FHIR Team Should Know in 2026
Code system tools sit alongside the terminology server in any serious FHIR stack. The terminology server answers the runtime questions,…
Top 6 FHIR Questionnaire Tools for Patient Reported Outcomes
Patient reported outcomes are a particular flavor of FHIR Questionnaire workflow. The form is filled in by the patient, often…
NextGate vs Verato for Enterprise Patient Matching
NextGate and Verato are the two commercial patient matching products that show up most often in enterprise MPI conversations in…
5 Numbers From a New FHIR Server Benchmark Worth Knowing
Health Samurai pushed out an open-source FHIR server performance benchmark on 2026-06-29 that puts Aidbox, HAPI FHIR, Medplum, and the…