# Nigel Ohrenstein

> Nigel Ohrenstein is the CEO of Diagnostic Robotics, a Boston-based AI healthcare company building predictive tools for population health, triage, and care management. A UK-born former lawyer turned consultant, he has spent more than two decades operating at the front edge of value-based care: he scaled Express Scripts' Medicare business from under $10 million to over $500 million, co-founded the value-based care leader Lumeris, and served as president of both Kaia Health and TeleTracking Technologies before taking the helm at Diagnostic Robotics.

- **Role:** Chief Executive Officer at Diagnostic Robotics
- **Organizations:** Diagnostic Robotics, Lumeris, Kaia Health, TeleTracking Technologies, Express Scripts
- **From:** United Kingdom
- **Nationality:** British
- **Education:** BA and MA in Law, University of Cambridge
- **Known for:** Scaled Express Scripts' Medicare business from under $10M to over $500M in revenue, Co-founded Lumeris and helped build it into a leading value-based care company and Medicare Advantage operator, Led growth and operations across sales, marketing, account management, product, partnerships and strategy at Lumeris

## Career timeline

- **1990s** — Began career as a lawyer in the UK after studying law at the University of Cambridge
- **2000s** — Moved to the US and switched to management consulting
- **2000s** — At Express Scripts, built the Medicare business from under $10M to over $500M
- **2000s-2010s** — Co-founded Lumeris, growing it into a leading value-based care company and Medicare Advantage operator
- **2021** — Appointed President of Kaia Health, a digital MSK and COPD company
- **2022** — Joined TeleTracking Technologies as President, leading the healthcare workflow logistics company
- **2024** — Became Chief Executive Officer of Diagnostic Robotics

## Achievements

- Scaled Express Scripts' Medicare business from under $10M to over $500M in revenue
- Co-founded Lumeris and helped build it into a leading value-based care company and Medicare Advantage operator
- Led growth and operations across sales, marketing, account management, product, partnerships and strategy at Lumeris
- Served as President of Kaia Health and President of TeleTracking Technologies
- Now leads Diagnostic Robotics, an AI healthcare company that has raised roughly $84M in total funding

## Latest updates

- **2024** — Leading Diagnostic Robotics as CEO, advancing AI tools for population health, triage and care management.

## Links

- Website: https://diagnosticrobotics.com
- LinkedIn: https://www.linkedin.com/in/nigelohrenstein/

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Profile page: https://yespress.io/nigel-ohrenstein
Published by YesPress — https://yespress.io
Last updated: 2026-06-10