Ivan Shukshin

Tech Lead at MDMbox team – Health Samurai

Ivan builds MDMbox at Health Samurai — probabilistic matching, record linkage, and master data management for FHIR. His work sits at the intersection of statistics, healthcare interoperability, and data quality.

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Articles with Ivan Shukshin participation (4)

Designing $unmerge: Reversing the FHIR Patient Merge

May 22, 2026

15 min read

Designing $unmerge: Reversing the FHIR Patient Merge

FHIR has no $unmerge operation. We built one that reverses a merge using Provenance + History API and lets the client decide what to do with data added between the merge and unmerge.

MPI Vendors Couldn't Agree. We Solved Patient Merge

Apr 20, 2026

8 min read

MPI Vendors Couldn't Agree. We Solved Patient Merge

FHIR's Patient/$merge assumes the server knows how to merge. Two decades of MPI vendor configs, EHR vendor divergence, and national registry policy show why one algorithm cannot serve every organization.

Beyond Patient/$merge: A Resource-Agnostic, Client-Driven Merge for FHIR

Apr 9, 2026

8 min read

Beyond Patient/$merge: A Resource-Agnostic, Client-Driven Merge for FHIR

FHIR R5's Patient/$merge is a start, but production MDM needs more. We built a resource-agnostic $merge with client-driven plans, atomic audit trails, and a generic $referencing operation.

Master Patient Index (MPI) and Master Data Management: How It Works + Examples

Mar 9, 2024

11 min read

Master Patient Index (MPI) and Master Data Management: How It Works + Examples

Master Patient Index (MPI) and healthcare Master Data Management explained: how record linkage works, common architectures, and a worked example using FHIR and Aidbox.