What DR GPT™ means
DR GPT™ started with a book. In January 2023 I published ChatGPT and Healthcare, one of the first books on what large language models would mean for medicine. The name stuck, and it became the brand for my healthcare AI work.
Who I am
I am Harvey Castro, MD, MBA. I am a board-certified emergency physician and I still practice. I trained in emergency medicine at St. Luke's in Bethlehem, Pennsylvania, earned my MD at UT Medical Branch in Galveston and my Physician Executive MBA at the University of Tennessee.
I have written more than 45 books with Wiley, Routledge and on my own imprint. I am a 6x TEDx speaker, a LinkedIn Top Voice and Advisor to the CEO at Phantom Space. I speak to hospitals, health plans and technology leaders about AI in English and Spanish.
What I believe
AI should give clinicians time back with patients. It should never become a reason to spend less time with them. I call that human plus AI: the tool drafts, the human decides, and the patient stays at the center.
Where to find the work
- DR GPT™ Intelligence: my briefing on healthcare AI news
- DR GPT™ Voice: voice AI and voice cloning safety
- DR GPT™ Labs: free tools for patients
- My keynotes
DR GPT™ is a trademark of Harvey Castro, MD, MBA, in use since 2023. It is not affiliated with OpenAI or any AI company.
Written by Harvey Castro, MD, MBA, board-certified emergency physician. Last reviewed November 12, 2026.