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Aaron R. Ritter, MD

Larkin Family Endowed Chair in Integrative Brain Health & Director, Memory and Cognitive Disorders Program

YouTube video

Dr. Ritter completed specialized training in psychiatry and behavioral neurology, and has led groundbreaking research on dementia and head trauma, including other contributions to the field.

Board-certified by the American Board of Psychiatry and Neurology, Dr. Ritter completed a psychiatry residency at the University of Arizona and a fellowship in behavioral neurology at Cleveland Clinic, focusing on Alzheimer’s, Lewy body disease, and other dementias. As a principal investigator on numerous studies, he has secured NIH and Alzheimer’s Drug Discovery Foundation funding and led the largest study on head trauma in professional athletes.

Recognized with honors like the Las Vegas HEALS Inspired Excellence Award, he is also celebrated for his teaching and has published extensively on dementia. Dr. Ritter earned his medical degree from the University of Colorado.

Alzheimer’s Disease

Specialized focus on this progressive neurological disorder that causes memory loss, cognitive decline, and behavioral changes, ultimately impairing daily functioning and quality of life.

Lewy Body Disease

Support with this progressive neurological disorder characterized by abnormal protein deposits in the brain, leading to cognitive decline, movement difficulties, and symptoms such as visual hallucinations and fluctuating alertness.

Chronic Traumatic Encephalopathy

Provide care through advanced diagnostics, personalized treatment plans, and support for managing cognitive, emotional, and neurological symptoms.

Frontotemporal Dementia

Focus on a group of disorders caused by nerve cell damage in the brain's frontal and temporal lobes, leading to changes in behavior, personality, language, and decision-making.

Dr. Ritter on a panel giving a presentation

Patient Testimonial Carousel

“Dr. Ritter is absolutely wonderful. He not only cared about my concerns, but truly listened to my story. He takes his time, making me and my family feel very assured and addressing every need.”

Patient of Dr. RitterChevron right small icon
Dr. Ritter patient testimonial, nurse reaches out to patient's hands

Awards & Accolades

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Named OC Register’s 150 Most Influential People in Orange County 2023

Illustrative Research Innovation

Honoree Greater Irvine Chamber of Commerce Excellence in Healthcare and Innovation (2024)

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One of the Few Fellowship-Trained Neuropsychiatrists Specializing in Dementia and Alzheimer’s

YouTube video

Video

Why It’s Important to Have Comprehensive Research & Focus on the Family

    Media Spotlight

    Resource

    Hoag Memorial Taps Dr. Aaron Ritter for Brain Health Program PostChevron right small icon

      Dr. Ritter Blog - Brain Health Program Post Profile Picture

      Article

      This Has Never Been Done Before: Plans Progress for Richard H. Pickup Center for Brain HealthChevron right small icon

        Dr. Ritter with Richard H. Pickup

        Publications

        Publication

        Blood Biomarkers and Neurodegeneration in Individuals Exposed to Repetitive Head ImpactsChevron right small icon

        • Aaron Ritter, MD in Collaboration with Other Authors

        Journal

        Relationships Between Plasma Biomarkers, Tau PET, FDG PET, and Volumetric MRI in Mild to Moderate Alzheimer’s Disease PatientsChevron right small icon

        • Aaron Ritter, MD in Collaboration with Other Authors

        Study

        Microglial Imaging in Alzheimer’s Disease and Its Relationship to Brain Amyloid: A Human 18F-GE180 PET StudyChevron right small icon

        • Aaron Ritter, MD in Collaboration with Other Authors

        Journal

        Clinical and Biological Relevance of Glial Fibrillary Acidic Protein in Alzheimer’s DiseaseChevron right small icon

        • Aaron Ritter, MD in Collaboration with Other Authors

        Resource

        MCLENA-1: A Phase II Clinical Trial for the Assessment of Safety, Tolerability, and Efficacy of Lenalidomide in Patients with Mild Cognitive Impairment Due to Alzheimer’s DiseaseChevron right small icon

        • Aaron Ritter, MD in Collaboration with Other Authors

        Program Leadership


        The Memory and Cognitive Disorders Program

        Hoag Neuroscience Institute

        The Memory and Cognitive Disorders Program treats people suffering from neurological diseases including Alzheimer’s disease, vascular dementia, Lewy body disease, and chronic traumatic encephalopathy.

        More about this programChevron right small icon

        Get in touch to schedule a consultation with 
the Memory & Cognitive Disorders Program.

        Get in touch to schedule a consultation with 
the Memory & Cognitive Disorders Program.Chevron right small iconBook an Appointment