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Background: Dementia and mild cognitive impairment (MCI) are prevalent but underdiagnosed. Objective: To compare new dementia/MCI diagnosis rates in geriatrics-focused primary care clinics and traditional primary care clinics. Design: Secondary analysis of a prospective matched cohort study that spanned 2017–2021. Participants: Community-dwelling Veterans over 65 receiving primary care in a geriatrics-focused medical home (GeriPACT) or traditional primary care home (PACT) at one of 57 Veterans Affairs sites. We excluded individuals with a documented diagnosis of dementia or MCI in the year prior to enrollment. Main Measures: Diagnoses obtained from EHR. Cognitive status was assessed using modified Telephone Interview for Cognitive Status (mTICS) tool. Key Results: The 470 participants included in this analysis were predominantly white, non-Hispanic males with an average age of 80.3 years. 9.4% of participants received a diagnosis of dementia/MCI after 24 months: 11.5% in GeriPACT and 7.2% in PACT. Adjusted OR for dementia/MCI diagnosis based on GeriPACT exposure was 1.47 (95% CI 0.65–3.29). Low mTICS score (≤ 27) (OR 4.89, 95% CI 2.36–10.13) and marital status (married/partnered) (OR 1.89, CI 0.99–3.59) were independent predictors of dementia/MCI diagnosis. When stratified by cognitive status: diagnosis rates were 20.8% in GeriPACT and 16.7% in PACT among those who scored lower on the cognitive assessment (mTICS ≤ 27); 7.4% in GeriPACT and 3.6% in PACT among those who scored higher (mTICS > 27). The OR for new dementia/MCI diagnosis in GeriPACT was 1.19 (95% CI 0.49–2.91) among those with a low mTICS score and 1.85 (95% CI 0.70–4.88) among those with a higher mTICS score. Conclusions: Observed rates of new dementia/MCI diagnosis were higher in GeriPACT, but with considerable uncertainty around estimates. Geriatrics-focused primary care clinics may be a promising avenue for improving the detection of dementia in older adults, but further larger studies are needed to confirm this relationship. [ABSTRACT FROM AUTHOR]