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Reference corner

Reference corner

Whenever a colleague asks which fields a Practitioner resource actually needs, I point them at the R4 resource atlas I maintain here.

FHIR Server & API Solutions
  • Profiles and Slicing at a Glance
  • Reference vs Contained: When to Embed and When to Link
  • Top 5 MPI Engines for Payer-Driven Patient Reconciliation in 2026
  • The Ten FHIR Resources You Should Learn First
  • Navigating FHIR R4 Resources When You Know DomainResource But Not Much Else
Top 5 MPI Engines for Payer-Driven Patient Reconciliation in 2026
Master patient index

Top 5 MPI Engines for Payer-Driven Patient Reconciliation in 2026

Jasmine Ward Jul 12, 2026 0

Payer-driven patient reconciliation has become a distinct MPI workload in 2026. CMS interoperability rules pushed payers into FHIR exchange, and…

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Top 6 Patient Matching Tools for FHIR-Native Healthcare Platforms
Master patient index

Top 6 Patient Matching Tools for FHIR-Native Healthcare Platforms

Jasmine Ward Jul 2, 2026 0

FHIR-native healthcare platforms have a narrower set of MPI choices than legacy hospital systems. The platform's data model is FHIR…

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5 MPI Engines That Actually Handle Newborn and Twin Records
Master patient index

5 MPI Engines That Actually Handle Newborn and Twin Records

Douglas Halloway Jun 21, 2026 0

Newborn and twin records are the edge case MPI vendors often skip past in demos and CIOs always ask about.…

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Best MPI Tools for Cross-State Patient Identity in 2026
Master patient index

Best MPI Tools for Cross-State Patient Identity in 2026

Fatima Choudhury Jun 11, 2026 0

Cross-state patient identity is a problem most MPIs were not originally designed to solve. Identifier domains stop at state lines,…

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Top 7 Patient Matching Engines for Health Information Exchanges
Master patient index

Top 7 Patient Matching Engines for Health Information Exchanges

Jasmine Ward Jun 7, 2026 0

Health information exchanges run the broadest patient-matching workloads in US healthcare. The matching has to reconcile records from dozens of…

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Top 5 MPI Tools for Multi-Hospital Systems in 2026
Master patient index

Top 5 MPI Tools for Multi-Hospital Systems in 2026

Serena Alcott Jun 6, 2026 0

Multi-hospital systems run patient matching across more boundaries than a single-site MPI was ever designed for. Different EHR instances, different…

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FHIR Master Patient Index: A Buyer's Guide for Healthcare CIOs
Master patient index

FHIR Master Patient Index: A Buyer's Guide for Healthcare CIOs

Serena Alcott Jun 4, 2026 0

A master patient index is the identity layer that prevents one patient from showing up as three records across different…

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Changing Healthcare with a Master Patient Index
Master patient index

Changing Healthcare with a Master Patient Index

Fatima Choudhury Feb 13, 2025 0

In the fast-changing world of healthcare technology, a master patient index (MPI) is very important. As healthcare providers move towards…

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Just how can EMR revolutionize dermatology practices and improve patient outcomes
Master patient index

EMR in Dermatology: 4 FHIR Patterns for Specialty Workflows

Douglas Halloway Feb 10, 2025 0

Dermatology practices need EMR functionality that generic ambulatory EMRs address unevenly. FHIR provides primitives for four specialty-specific patterns. Pattern 1:…

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How can 7 Innovative EHR Features Transform Dermatology Practices
Master patient index

EHR Features for Dermatology: What Actually Ships in Specialty Practices

Serena Alcott Jan 24, 2025 0

Dermatology practices need EHR features generic ambulatory EHRs don't fully provide. Seven capabilities distinguish specialty-ready EHRs. 1. Image handling at…

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Medical Forms & FHIR SDC
Editorial illustration in cyberpunk-neon style depicting a cyberpunk-neon base Patient resource with US Core profile applied and sliced identifiers
R4 Resource Atlas
Profiles and Slicing at a Glance
Jasmine Ward Jul 13, 2026
Editorial illustration in cyberpunk-neon style depicting a cyberpunk-neon side-by-side of Reference between resources vs a contained child resource
R4 Resource Atlas
Reference vs Contained: When to Embed and When to Link
Jasmine Ward Jul 13, 2026
Top 5 MPI Engines for Payer-Driven Patient Reconciliation in 2026
Master patient index
Top 5 MPI Engines for Payer-Driven Patient Reconciliation in 2026
Jasmine Ward Jul 12, 2026
Editorial illustration in cyberpunk-neon style depicting a cyberpunk-neon ten-tile grid of the most common R4 resource types with cyan neon strokes
R4 Resource Atlas
The Ten FHIR Resources You Should Learn First
Jasmine Ward Jul 12, 2026