EHR-Enabled Alzheimer’s Disease Care Pathways in Primary Care: Results from a Multisite Implementation Pilot

Memory loss is one of the most feared aspects of aging, and for millions of people, it signals the beginning of Alzheimer's disease. This condition is the leading cause of dementia, a progressive decline that strips away independence and places a heavy burden on families and healthcare systems. While new treatments are emerging that work best when the disease is caught early, finding these cases early is surprisingly difficult. Most people first notice their memory slipping during a routine visit with their primary care doctor, the same physician who manages their blood pressure or diabetes. However, doctors often lack the time, the specific tools, or the clear instructions needed to turn that routine visit into a proper screening for memory problems. Without a structured way to check for these issues, many cases go unnoticed until they are too advanced for the most effective interventions.

To bridge this gap, a team of researchers from three major health systems in the United States tested a new approach: embedding memory checks directly into the computer systems doctors use every day. They wanted to see if building these checks into the electronic health record—the digital file that holds a patient's medical history—could make it easier for doctors to follow a clear path for identifying Alzheimer's. This path, known as a care pathway, is essentially a step-by-step guide that tells a doctor what to do if a patient shows signs of memory trouble, from running simple tests to ordering blood work or referring the patient to a specialist. The researchers set out to see if this digital nudge could change how doctors practice and whether it would lead to more patients getting the attention they need.

The study took place across three different health systems, involving over ten thousand patients and more than one hundred fifty primary care doctors. The researchers focused on two groups of people: those coming in for their annual wellness check, which legally requires a look at cognitive health, and adults over fifty who specifically mentioned memory worries. Before the new system was turned on, the researchers looked at what happened during a six-month period to establish a baseline. Then, they activated the new electronic tools and watched what happened during the next six months. These tools varied slightly by location but shared a common goal: they automatically prompted doctors to use validated memory tests, such as the Mini-Cog or the Montreal Cognitive Assessment, and calculated the scores instantly so the doctor didn't have to do the math. If a test came back with a concerning result, the system would suggest the next logical steps, like ordering blood tests to rule out reversible causes of memory loss, such as vitamin deficiencies or thyroid issues.

The results showed that when these tools were in place, doctors did follow the path more often. Before the intervention, only about a quarter of eligible patients received a cognitive assessment. After the system was updated, that number rose to nearly a third. This might seem like a small jump, but in the world of healthcare, where habits are hard to break, it represents a significant shift in behavior. More importantly, the doctors didn't just stop at the screening. When a patient had an abnormal result, the doctors were nearly three times more likely to order the recommended blood tests to investigate the cause. This suggests that the digital guide helped doctors move past the initial worry and take concrete action to understand the problem.

However, the story is not entirely one of immediate success. While more people were screened and more blood tests were ordered, the number of patients referred to specialists, such as neurologists, did not change. Furthermore, the number of new diagnoses of Alzheimer's or related conditions actually went down slightly during the study period. The researchers offer a careful explanation for this: by screening more people, including those who were not at high risk, the doctors found fewer people with abnormal results. In the past, doctors might have only tested patients who were clearly struggling, leading to a high rate of abnormal findings. Now, with broader screening, the pool of tested patients is larger and includes many people with healthy memories, which naturally lowers the percentage of abnormal results. The drop in new diagnoses also likely reflects the time it takes for a patient to move from a primary care visit to a specialist appointment and finally receive a confirmed diagnosis, a process that often takes longer than the six months the study observed.

The study concludes that integrating these tools into the daily workflow of a doctor's office can successfully encourage the first, crucial steps of identifying memory problems. It proves that when the right information is presented at the right time within the system doctors already use, they are more likely to follow best practices. Yet, the research also highlights that technology alone cannot solve the entire puzzle. The journey from a simple memory test in a primary care office to a confirmed diagnosis in a specialist's clinic remains complex and lengthy. While the electronic tools helped doctors start the conversation and order the right tests, the final steps of diagnosis and treatment still rely on the intricate coordination between different levels of care. The findings suggest that while we have found a way to get more people into the system, the work of ensuring they get a timely and accurate diagnosis is a continuing effort that requires both better tools and stronger connections between primary care and specialists.