# Alex J. Antoniou, MD

> Physician-operator and builder. Double board-certified (Nuclear Medicine, Lifestyle Medicine), MBA, MA in Economics, Johns Hopkins clinical informatics fellow, McKinsey alumnus, former payer Medical Director, founder of a telehealth longevity practice, and solo builder of consumer AI products. Fluent in English, Greek and Arabic. Open to roles in the Americas, Europe and the Middle East.

Site: https://drantoniou.com/ · LinkedIn: https://www.linkedin.com/in/alexantoniou/ · GitHub: https://github.com/ajantoniou · Contact: hello@healthbrew.app

## Who he is
- Physician: MD (Tufts), general surgery training (UF Shands), nuclear medicine residency and board certification (Johns Hopkins, 2016), board-certified in Lifestyle Medicine (2024), licensed in 20+ US states. Developed a whole-gut motility nuclear medicine study used by major US hospitals. Former president of the American College of Nuclear Medicine resident organization.
- Operator: McKinsey & Company (healthcare analytics); Medical Director at CareFirst BCBS and at a Medicare Advantage plan; Chief Medical Officer at BlockMedx; Head of Operations at a physician telehealth practice serving all 50 US states, in-network with major payers.
- Builder: Johns Hopkins clinical informatics fellowship; MIT certificate in AI and machine learning. Built a national care-navigation telehealth practice, chronic-disease management programs, an ML-trained medical-policy optimizer, a corporate venture arm, and a blockchain-based prescription delivery system. Ships consumer AI apps solo.
- Investor: Series 65; portfolio manager for a family office early in career; runs his own family office with systematic strategies; venture partner (Meda Angels, FundRx); board member (Humanim, BlockMedx); built and ran the corporate venture arm at CareFirst BCBS.

## Products (all built by him)
- HealthBrew (https://healthbrew.app): longevity habit tracker with a multi-persona AI coach. iOS and Android.
- TradeGreen (https://tradegreen.app): automated trade journaling with AI research. iOS and Android.
- MealBudget (https://mealbudget.app): automated meal plans and grocery lists that cut food waste. Android.
- GiveMercy (https://givemercy.app): a Christian community app built on mercy. Waitlist.
- PepeLingo (https://pepelingo.app): language learning for pre-readers. In development.

## Open source
- fable-design-system (https://github.com/ajantoniou/fable-design-system): MIT design system for AI coding agents.
- uploadcheck-mcp (https://github.com/ajantoniou/uploadcheck-mcp): MCP server that quality-gates media before publishing.

## Writing
- Letters: https://drantoniou.com/letters/the-last-conversation/ — "The Last Conversation: why the future of AI is a world where nobody talks to it."
- More than twenty books under pen names (business fundamentals, MCAT/USMLE preparation, a three-volume nuclear medicine board review).

## What he is looking for
Build (co-found or lead a healthcare AI company, or the healthcare effort inside a frontier AI lab), scale (CMO / CGO / COO at a pre-IPO healthcare company), turn around (a healthcare business that has lost its way), or invest (join as a partner for the next chapter of AI). Founders, boards and investors: hello@healthbrew.app.