HCC 3030 · Week 6

AI in
Healthcare

A thousand places to help, from the first signal of disease to the discovery of a new treatment.

Start with the landscape

Healthcare is not one place.

kitchen tablepharmacyschool clinicambulanceprimary careradiology suitelaboratoryoperating roomhospital wardrehabilitation gympublic-health officeresearch bench

Every setting has different data, decisions, experts, time pressure, and definitions of success.

A single journey

One person’s care journey contains dozens of moments where AI could help.

1NOTICEA wearable detects a change.
2ACCESSTriage finds the right setting.
3DIAGNOSEImages, labs, and history align.
4TREATA plan fits the person.
5RECOVERHome monitoring catches setbacks.
scheduledocumentcoordinateeducatebilllearn
The central claim

The promise is not replacing medicine. It is changing what medicine can notice, reach, and accomplish.

NOTICEweak signals earlier
REACHpeople outside specialist centers
PERSONALIZEcare to a changing patient
COORDINATEcomplex work across teams
DISCOVERnew biology and treatments
Why the opportunity is so large

Healthcare is constrained by both scarce expertise and enormous system cost.

11 millionprojected global health-worker shortfall by 2030
$5.3 trillionU.S. health spending in 2024
18.0%of U.S. gross domestic product in 2024

AI matters economically when it improves outcomes, expands capacity, or removes work that consumes expertise without helping patients.

This is already a deployment story

Predictive AI is already embedded in most U.S. hospitals.

71%

of surveyed non-federal acute-care hospitals reported predictive AI integrated with the EHR in 2024.

Common uses included inpatient risk, readmission, early disease detection, scheduling, billing, and treatment recommendations.

Small, rural, independent, and critical-access hospitals reported lower adoption.

Not an LLM-only field

Healthcare AI is built from many model families working on many kinds of signals.

IMAGESclassification · detection · segmentation · reconstruction
WAVEFORMStime-series models · anomaly detection · forecasting
RECORDSrisk models · survival analysis · causal estimation
LANGUAGEinformation extraction · retrieval · generation
MOLECULESgraph models · structure prediction · generative design
ACTIONSoptimization · control · robotics · reinforcement learning
A better way to scan the field

Every healthcare setting contains a different combination of sensing, judgment, and action.

SETTINGAI CAN HELPHUMAN EXPERTISE
HOMEmonitor, coach, detect changecontext, goals, escalation
CLINICsummarize, screen, recommendexamine, interpret, decide
HOSPITALforecast, prioritize, coordinaterespond, negotiate, recover
LAB + IMAGINGfind, quantify, comparevalidate, diagnose, communicate
RESEARCHsearch, simulate, generateform hypotheses, test, explain
Six pathways to value

AI creates healthcare value in more ways than “better diagnosis.”

1EARLIERdetect risk before crisis
2MORE PRECISEtailor care to the person
3MORE CAPACITYreturn time to patients
4MORE CONTINUITYconnect visits and settings
5MORE REACHmove expertise to the point of need
6FASTER SCIENCEsearch biological possibility
01

See sooner

AI can extend perception across images, signals, records, and time.

Medical imaging

AI can turn every scan into a second search, a measurement tool, and a comparison with the past.

FIND

Small lesions, fractures, bleeds, and vascular occlusions.

MEASURE

Volumes, boundaries, growth, perfusion, and treatment response.

PRIORITIZE

Move time-sensitive studies to the front of a worklist.

RECONSTRUCT

Improve images from faster or lower-dose acquisition.

The opportunity is not one “AI radiologist.” It is a collection of specialized perceptual tools across the imaging workflow.
Evidence · Breast-cancer screening

The MASAI trial moved AI mammography from benchmark accuracy toward population outcomes.

TRIAL100,000+

Women randomized to AI-supported or standard double reading in Sweden.

WORKLOAD44.3%

Lower screen-reading workload in the interim safety analysis.

OUTCOME12%

Lower interval-cancer rate reported in the 2026 follow-up.

Why it matters

The system changed how radiologists allocated attention and was evaluated against what happened after screening, not only against a labeled image set.

Evidence · Specialty access in primary care

Autonomous eye screening changed who completed care, not only who received an accurate score.

USUAL REFERRAL22%

completed a diabetic eye exam within six months

POINT-OF-CARE AI100%

completed the eye exam during the study visit

Among participants with an abnormal AI result, 64% completed specialist follow-up. The trial enrolled a diverse group of youth with diabetes.

Computational pathology

A digital tissue slide can become searchable evidence, a second opinion, and a source of new biomarkers.

2.3M slideslearn visual representations
+
700K reportsconnect tissue to diagnostic language
PRISM2cancer detection · report completion · biomarker and survival representations
One general model can support many downstream tasks, but every intended clinical use still needs its own validation.
Signals outside the hospital

Continuous sensing can move medicine from occasional snapshots toward early change detection.

SECONDSECG · oxygen · glucose

detect rhythm, hypoxia, or metabolic change

HOURSsleep · movement · respiration

identify a changing baseline

DAYSsymptoms · medication · behavior

forecast deterioration or recovery

The technical challenge is finding the signal. The care challenge is deciding when, where, and to whom the signal should escalate.
Precision medicine

AI can connect the patient in front of us to patterns spread across millions of measurements.

PERSONgoals · symptoms · history · environment
PHENOTYPEimages · labs · physiology · response
MOLECULARgenome · transcriptome · proteome · microbiome
POPULATIONsimilar trajectories · rare cases · treatment outcomes

The opportunity is not merely predicting risk. It is choosing the right intervention, dose, sequence, and follow-up for this patient.

02

Act sooner

The highest-value prediction is often the one that creates useful lead time.

Clinical prediction

Prediction matters when it moves a decision into a window where action can still help.

TOO EARLY

weak signal, many false alarms

ACTION WINDOWdetect → verify → intervene
TOO LATE

high certainty, little time to change course

sepsisclinical deteriorationstrokereadmissionmedication harm
A 2026 milestone · Sepsis

An AI early-warning system received FDA clearance after years of work on the model and the bedside workflow.

STREAM

EHR data are monitored before clinicians suspect sepsis.

ALERT

The system creates lead time and presents relevant evidence.

TEAM

Clinicians evaluate, confirm, and begin treatment.

OUTCOME

Johns Hopkins reports lower mortality across deployed hospitals.

The breakthrough was not a score alone. It was a monitored path from signal to response.
Decision support

A risk score is not a treatment plan.

MODEL OUTPUT0.72 risk of deterioration
CLINICAL ACTIONrepeat labs · examine · transfer · treat · watch

What evidence drove the score?

Which action is appropriate for this patient?

Who has the authority and capacity to respond?

What happens when the model is wrong?

Thresholds become workload

The same model can feel brilliant or unbearable depending on where the alert threshold is set.

HIGHER THRESHOLDfewer alertsmore missed caseshigher urgency per alert
WHO GETS INTERRUPTED?
LOWER THRESHOLDmore alertsmore cases detectedgreater review burden

Choose the threshold with prevalence, staffing, intervention cost, and patient harm in view.

Clinical copilots

A useful clinical copilot can gather evidence before it tries to generate an answer.

RETRIEVEhistory, trends, medications, guidelines
ORGANIZEtimeline, problem list, contradictions
PROPOSEquestions, differential, next steps
VERIFYclinician checks evidence and fit

Best near-term role: compress search and synthesis while keeping evidence visible.

Harder role: autonomous diagnosis or treatment across open-ended cases.

Nursing and bedside care

AI can help nurses see the whole ward without losing sight of the person in the room.

ACROSS THE WARD

identify deterioration

prioritize rounds

forecast staffing and supplies

coordinate handoffs

ATTENTION
is the scarce resource
AT THE BEDSIDE

interpret context

notice subtle change

explain and reassure

advocate and escalate

Frontier · Surgical autonomy

Robotic surgery is moving from precise teleoperation toward systems that can interpret and execute parts of a procedure.

0MANUALhuman controls tools
1ASSISTEDstabilize and constrain
2TASKautomate a defined step
3PROCEDURALadapt across a sequence
4FUTUREbroader autonomous operation

In 2025, SRT-H completed a lengthy phase of gallbladder removal on realistic ex vivo tissue, responding to voice guidance and adapting during the procedure.

Rehabilitation and assistive care

AI can make therapy responsive to the person’s movement, fatigue, and progress.

SENSEmotion · force · speech · effort
INTERPRETquality · compensation · fatigue
ADAPTdifficulty · feedback · assistance
LEARNlongitudinal progress
prosthetic controlgait supportspeech therapystroke recoverypersonalized exercise
03

Give time back

Some of healthcare’s biggest gains may come from removing friction around care.

Evidence · Ambient documentation

AI scribes show how automation can restore the human side of a clinical encounter.

51.9%clinicians reporting burnout before use
38.8%after 30 days of ambient AI use

Participants also reported less note-related cognitive load, less after-hours documentation, and more focused attention on patients.

This was a voluntary pre/post quality-improvement study, not a randomized estimate of long-term causal effects.

Administrative and communication work

The highest-volume healthcare AI may live in work patients rarely see.

BEFOREschedule · verify coverage · prepare chart · predict no-show
DURINGtranscribe · retrieve · code · place orders · explain
AFTERsummarize · route inbox · reconcile · follow up · bill

Automating friction can increase capacity without pretending that relationships, judgment, and responsibility are clerical tasks.

Hospital operations

A hospital is a dynamic system of beds, people, equipment, queues, and uncertain arrivals.

ED arrivalsdischargesstaffingOR casesbed statustransport
FORECAST
+
OPTIMIZE
open capacitysequence casesassign teamsreduce boardingroute suppliesplan discharge
Medication and pharmacy

AI can follow a medication across prescribing, dispensing, adherence, and response.

PRESCRIBEinteraction and dose support
DISPENSEverification and inventory
TAKEreminders and adherence patterns
MONITORside effects and effectiveness
polypharmacy reviewantimicrobial stewardshippharmacovigilancepersonalized dosing
Care at home

AI can make the home a place of recovery, observation, and early support rather than a blind gap between visits.

OBSERVE

symptoms, movement, sleep, vitals, medication

COACH

rehabilitation, self-management, education

CONNECT

summaries and escalation to the care team

ADAPT

support based on changing goals and capacity

The future is not constant surveillance. It is meaningful sensing with clear boundaries and a reliable path to help.

04

Expand reach

AI can move parts of expertise across distance, language, and institutional boundaries.

Distributed expertise

AI can carry a specialized capability to the point where a patient first enters the system.

SCREEN LOCALLYAutonomous eye screening brings a bounded specialist task into primary care.
GUIDE ACQUISITIONAI can coach a local user to capture a usable image, scan, or signal.
TRIAGE IMMEDIATELYUrgent findings can reach the right specialist before the normal queue.
CONSULT REMOTELYDecision support can help a local team collaborate with scarce expertise.
LOCAL ENTRYAI performs or supports a bounded capabilitySPECIALIST WHEN NEEDED
Communication and comprehension

Language models could make medical information easier to find, translate, and understand.

PATIENTplain-language instructions · preparation · follow-up
CLINICIANrecord search · evidence retrieval · handoff summaries
TEAMtranslation · role-specific views · shared plans
COMMUNITYpublic-health communication · local-language materials
Good communication is not simpler text alone. It is accurate, culturally appropriate, actionable, and open to questions.
Population health

Public-health AI can find patterns that no single clinic can see.

LOCAL SIGNALSlaboratory results · symptoms · wastewater · mobility · news · genomics
POPULATION MODELdetect · forecast · map · prioritize
PUBLIC ACTIONinvestigate · communicate · allocate · intervene

CDC reported 103 internal AI use cases as of the end of 2025, spanning outbreak prevention and operational efficiency.

05

Accelerate science

AI can search biological spaces that are far too large for human trial and error alone.

AI for biology

AlphaFold changed protein structure from a scarce experimental result into a widely available prediction.

200M+

open protein-structure predictions

Researchers can begin with a plausible 3D structure, form hypotheses, compare proteins, and target experiments more efficiently.

A prediction is not a complete account of biological function, interaction, or clinical effect.

Drug and therapy discovery

AI can redesign the discovery loop from target identification through clinical development.

UNDERSTANDdisease mechanism and target
GENERATEmolecules, proteins, and candidates
PREDICTbinding, toxicity, efficacy, manufacturability
TESTsimulation, laboratory, animal, clinical
AI can make each cycle faster. Biology still decides what survives the next test.
Frontier · Virtual patients

Digital twins could let care teams explore possible futures before choosing an intervention.

PATIENT
current state
treatment A projected response
treatment B projected response
wait + monitor projected response
Frontier, not settled practice: credible digital twins require causal models, dense longitudinal data, uncertainty estimates, and prospective validation.
What changed in 2025 and 2026

Several frontiers moved from impressive demos toward larger models, real workflows, and stronger evidence.

2025Ambient AI randomized trials

documentation tools tested in live clinical practice

2025SRT-H surgical autonomy

multi-step procedure on realistic tissue

2026MASAI follow-up

population screening outcome beyond image accuracy

2026PRISM2 + sepsis clearance

larger multimodal pathology and a translated early-warning system

The evidence base is changing

Medical AI trials are increasingly favorable, but the field still needs broader and more rigorous evaluation.

113randomized trials identified
82.3%reported favorable primary outcomes
67.3%were single-center
71.7%did not report adherence to a reporting guideline

Promising results are accumulating. Generalizability, trial quality, and geographic concentration remain open problems.

The translation gap

A strong model is the beginning of a healthcare system, not the end.

MODELinputs → prediction
+
INTERFACEevidence → understanding
+
WORKFLOWalert → action
+
ORGANIZATIONroles → authority
+
LEARNINGmonitor → improve
Clinical value appears only when the whole chain works under real conditions.
A practical evaluation ladder

Healthcare AI should earn trust through progressively harder evidence.

1TECHNICALDoes it work on held-out data?
2EXTERNALDoes it travel across sites and groups?
3SILENTDoes it behave on live data without affecting care?
4WORKFLOWCan people use it safely and consistently?
5OUTCOMESDoes it improve care, capacity, equity, or cost?
6LIFECYCLEDoes it remain useful as the world changes?
Human-AI collaboration

The strongest care team combines machine breadth with human depth.

AI CONTRIBUTES

continuous monitoring

large-scale comparison

consistent measurement

rapid retrieval and simulation

+
PEOPLE CONTRIBUTE

physical examination

context and causal judgment

goals, values, and consent

responsibility and recovery

Together: earlier attention, better questions, more personalized action, and more time for care.
Opportunity selection

Start where AI can remove a real constraint and the care system can act on the result.

VALUE IF SOLVED
HIGH VALUE · LOW READINESSRESEARCH

build evidence and infrastructure

HIGH VALUE · HIGH READINESSBUILD HERE

clear action, usable data, capable owner

LOW VALUE · LOW READINESSAVOID

technology searching for a problem

LOW VALUE · HIGH READINESSQUESTION

easy automation, weak patient benefit

ABILITY TO DEPLOY SAFELY
The speculative horizon

Some of the most extraordinary healthcare applications may still be ahead.

PERSONALIZED MEDICATIONDrugs and doses designed for one body.
ADAPTIVE TREATMENTTherapy adjusts continuously to response.
PRE-SYMPTOM DETECTIONDisease found years before symptoms.
PATIENT DIGITAL TWINSTreatments tested in simulation first.
EXPERT CARE ANYWHERESpecialist guidance in any clinic or home.
AUTONOMOUS PROCEDURESRobots handle bounded tasks under supervision.
REGENERATIVE DESIGNAI designs proteins, cells, tissues, and organs.
NEURAL PROSTHETICSDevices learn intention and restore function.
SELF-RUNNING LABSAI plans, runs, and learns from experiments.
GLOBAL OUTBREAK RADARThreats found before crises spread.
These are research directions, not promises. Their value will depend on evidence, access, governance, and the care systems built around them.
A healthcare AI opportunity canvas

For any setting, ask six questions.

1 What human need or system constraint are we changing?

2 What signal, pattern, or search can AI handle unusually well?

3 What new action becomes possible, and who takes it?

4 Which expertise, relationship, and responsibility must remain human?

5 What evidence would show real clinical or system value?

6 How will the system learn safely after deployment?

SEE
SOONER
REACH
FURTHER
CARE
BETTER