What LEAD Means for Original Medicare ACOs in 2027
On January 1, 2027, the CMS LEAD model makes dementia care a line item for Original Medicare ACOs. The ACOs that are ready will be the ones that already know who in their population to assess.
Last updated: October 2026
On January 1, 2027, the CMS LEAD model makes dementia care a line item for Original Medicare ACOs. The ACOs that are ready will be the ones that already know who in their population to assess.
What does LEAD mean for an Original Medicare ACO in January 2027?
LEAD is the CMS dementia care payment model that begins on January 1, 2027 for Original Medicare ACOs, and it turns dementia care from an unmeasured cost into a line item the ACO is accountable for. To be ready, an ACO needs three things in place: a way to identify which attributed beneficiaries to assess, a clinical encounter in which the assessment is documented, and follow-up between visits that actually reaches the patient and the caregiver.
Most ACOs already carry dementia. They carry it as missed appointments, as medication problems nobody connected to memory, as hospital returns that a caregiver could have explained. What changes in January 2027 is that the care becomes something the ACO is paid for and measured on, by name.
The ACOs in the best position are not the ones with a dementia program on paper. They are the ones that can answer three questions today: which attributed beneficiaries should a clinician assess, how does that assessment get into a documented encounter, and who calls the patient and the caregiver in the weeks between visits.
This post covers the three pieces an ACO needs in place before the model starts. Nothing here describes the model's payment mechanics, which belong to the CMS model page linked below.
Identification: who in the population should a clinician assess?
Memory problems go unnoticed for years. Families notice, and the chart does not. A patient who answers every question at the annual visit can still be the patient whose daughter has quietly taken over the pill box.
The history that precedes a dementia transition is already in the ACO's data: coded conditions, encounters, medications and assessments. It is not being read at population scale, because nobody has time to read it.
Scienza's foundation model for aging reads that history and returns an aggregate one-year dementia report for the cohort. Members are never named. It is hosted by Scienza. It tells a medical director where to look. It does not tell a clinician what a patient has.
Encounter documentation: the assessment has to happen with a clinician
A dementia that lives in a care manager's notes and nowhere else does not exist for a payment model. The assessment has to happen in a clinical encounter and be documented there, by the clinician who performed it.
That is the bottleneck. Identification produces a list; the list is longer than the clinic's calendar. The ACO needs a way to decide who comes in this month and who can wait, and a way to bring the information the clinician needs into the visit before it starts.
Gia helps with both. A 40-second speech check-in by phone or video adds what no record holds, which is how the patient sounds today. One click sends Gia back to administer a structured assessment in conversation, with results in the clinician's hands in under two minutes. The clinician decides who is seen, performs the encounter and documents it. Gia is clinical decision support, not a diagnosis.
The pre-visit huddle changes shape. Instead of a list of names, the clinician has the check-in result, the caregiver's report and the structured assessment score side by side before the patient arrives.
Follow-up between visits: the part of dementia care that is all time
Once a patient is in the program, dementia care is mostly what happens between appointments. Is the new medication being taken. Did the caregiver get the respite she asked for. Has anyone been by.
These are phone calls, and phone calls are what care teams do not have time to make. Gia makes them, in any of 44 languages, with retries when nobody answers. Caregiver check-ins run alongside the patient's, so what the daughter has noticed sits beside what the patient reported.
The clinician sees a ranked worklist with the reason beside each name and Proactive Decision Actions. Options, never orders. The decision writes back to Epic or your EHR, dated and attributed, so the follow-up record is there when CMS or a quality committee asks for it.
What to have ready on January 1
A named cohort to assess, drawn from your own records. A clinic process that gets those patients in front of a clinician and documents the encounter. A follow-up cadence between visits for patients and caregivers, with a record of every attempt.
The AI co-clinician does the reaching and the preparing. Your clinicians do the assessing and the deciding. That split is what makes the program defensible when the measurement starts.
Where to start
Pick the attributed beneficiaries over 75 with no cognitive assessment in the record. Run the dementia report on your own data this quarter, then have Gia check in with the top of the list before the model begins.
See how ACOs and health systems prepare for LEAD with Gia, then book a working session with your population and your EHR.
Sources & References
- CMS, LEAD Model (dementia care, begins January 1, 2027): https://www.cms.gov/priorities/innovation/innovation-models/lead
David Kaiser is the Founder and CEO of Scienza Health, the company behind Gia, an AI co-clinician that health plans, ACOs, health systems and senior-care operators use to check in with older adults between visits.
This content is intended for informational purposes and does not constitute medical advice. Citing research does not mean this page or the product has been independently peer reviewed.