Healthcare AI,
led by a physician
I am Harvey Castro, MD, MBA, a board-certified emergency physician. I still work clinical shifts, and I have written about ChatGPT in medicine since January 2023. DR GPT™ is how I help hospitals, clinicians and patients use AI without losing the human part of care.
Keynotes
Talks on AI in the ER, the doctor in your pocket and the human voice advantage, in English and Spanish.
Executive advisory
Board and leadership briefings on where AI is ready in your hospital, where it is not, and what to ask vendors.
Safe-use guides
Free checklists for clinicians and patients, written from the bedside rather than the boardroom.
My rule for every AI tool
AI drafts, a human decides. I want AI to take paperwork off a clinician's plate, never to take judgment off it. Every tool I recommend has to pass three tests: it saves real time, a qualified person reviews what it produces, and a patient would be comfortable knowing it was used.
Big technology companies have all launched healthcare AI products this year. My briefing on what they shipped, and what it means for your hospital, is on DR GPT™ Intelligence.
Three questions before any AI goes live
- Who reviews the output before it reaches a patient or a chart?
- Where does patient data go, and is it used to train anything?
- What happens on the day it is wrong, and who is accountable?
Free tools I built for patients
GPT Medicine
A safe prompt builder for asking AI about your health, with 911 warning signs built in.
ER wait times
Typical ER visit times for hospitals near your ZIP code, from public Medicare data.
Lock-screen medical ID
Allergies, medicines and an emergency contact on your lock screen, free.
Written by Harvey Castro, MD, MBA, board-certified emergency physician. Last reviewed November 12, 2026.