hi, I'm Clint.

From Vision to Execution, I build products people ❤️

Since 2012, I’ve built and led data and AI work in healthcare and automotive regulatory, where compliance is the spec, not an afterthought. Notes from Nashville, usually with espresso.

Clint Johnson with family on a golf course tee box in Bloomfield Hills, Michigan, 2024
4 Generations · Bloomfield Hills, MI · 2024
MetaCaddieSoft launch · Nov 17

A caddie that
speaks first.

It reads the hole, the wind and your own game, then tells you the club and the target out loud, in the voice of the caddie you pick.

Soft launch: starting with golfers where the season never ends. Everyone else, when yours starts.

iPhone · Apple Watch · Ray-Ban Meta (Android coming)

Hear a caddie · 21 of 56

Characters are parodies. Voices are synthetic.

Try the betaSee how it works
MetaCaddie on a par 3: a satellite view of the hole with the aim line, the club and the shot dispersion

fresh off the desk →

9 min readHealthcare integration

LLM Incidental Findings Follow-Up in Radiology: The Model Finds It, Code Closes the Loop

Use an LLM to extract radiology follow-up recommendations with cited spans, then track them with FHIR Tasks and a deterministic matcher.

Read it →

Latest writing

All 101 articles →
  1. HL7, FHIR, MirthAI Claim Denial Appeal Letters: The Letter Is the Easy Part
  2. HL7, FHIR, MirthAI Patient Matching in an EMPI: The LLM Explains Uncertain Pairs, Humans Merge
  3. HL7, FHIR, MirthAI Agent Audit Log in FHIR: AuditEvent and Provenance That Name the Agent
  4. HL7, FHIR, MirthLLM LOINC Mapping: Make the Model Pick, Not Remember
  5. HL7, FHIR, MirthStop Polling the EHR: FHIR Subscriptions and Event-Driven AI Agents

Where to start

pick the one that sounds like you, read them in order

You work in healthcare tech

  1. Healthcare Integration For Beginners: HL7v2
  2. Mirth Connect: Part 1 - Getting Started with 🐳 Docker
  3. HIPAA Consent: What Engineers Actually Need to Know

You build with LLMs

  1. Table Stakes for Pragmatic Development Using LLMs
  2. What an AI Audit Actually Finds
  3. Your Support Team Is Claude Code on a Timer

You lead engineers

  1. Staff Engineer Layoff Survival Guide: Lessons from 2008, 2020, 2023 — and Now
  2. The Food Truck Method: Building MVPs That Don't Suck
  3. The Death of Institutional Memory: Why I'm Building Atlas (And Why It Matters)

Series

HL7 & Mirth from zero
  1. 1/3Healthcare Integration For Beginners: HL7v2
  2. 2/3Mirth Connect: Part 1 - Getting Started with 🐳 Docker
  3. 3/3Mirth Connect: Part 2 - Adding 🐰RabbitMQ
Shipping LLMs in production
  1. 1/3Table Stakes for Pragmatic Development Using LLMs
  2. 2/3What an AI Audit Actually Finds
  3. 3/3Your Support Team Is Claude Code on a Timer
React state, then and now
  1. 1/2React State Management & Clean SPA Architecture
  2. 2/2React Tooling 2024: Stop Using the Wrong Shit
No Fear News: real news, rewritten for calm. Read today's →