Department Cleveland Clinic Lou Ruvo Center for Brain Health
Primary Location Lou Ruvo Center for Brain Health - Las Vegas
Type of Doctor Adults Only
Languages English
Surgeon No
Locations Specialties & Treatments

Treatment & Services

  • Alzheimer's
  • Consultation, Evaluation, And Treatment Adult Neurological Disorders
View all 2 Treatment & Services +

Specialty in Diseases & Conditions

  • Alzheimer's
  • Alzheimer's and Dementia
  • Cognitive Disorders
  • Dementia with Lewy Bodies
  • Encephalopathy
  • Frontotemporal Dementia (FTD)
  • Memory Loss
View all 7 Specialties +


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About Aaron Ritter, MD

Aaron Ritter, MD, Associate Staff, Neuropsychiatry and Behavioral Neurology as well as the Director of Clinical Trials at the Cleveland Clinic Lou Ruvo Center for Brain Health.

Dr. Ritter treats adult Neurological patients and also leads the clinical Research Department by conducting urgently needed trials to advance the prevention, early detection, and treatment for Alzheimer’s disease, Parkinson’s disease, multiple sclerosis, and Huntington’s disease.  With more than 50 drugs and diagnostic trials being conducted at the Center, the Lou Ruvo Center for Brain Health is one of the largest and most active clinical research facilities for memory disorders in the country.

Dr. Ritter initially joined the Cleveland Clinic Lou Ruvo Center for Brain Health in July 2014 as a clinical fellow in Behavioral Neurology and Neuropsychiatry. Dr. Ritter comes to Las Vegas from Tucson following completion of his internship (in pediatrics) and three year residency (in psychiatry) at the University of Arizona.

At the University of Arizona, Dr. Ritter was involved in research projects looking at the neurocircuitry of emotional disorders, the effect of hypothyroidism on mood states, and psychiatric presentations of neurodegenerative disorders. He received two research awards from the University of Arizona for his work on these projects. In addition, Dr. Ritter developed a strong interest in medical education. Following completion of his internship, he received a distinguished teaching award that recognized him as one of the top three “resident educators” out of a pool of more than 600 residents and fellows.

During his two year clinical fellowship at the Lou Ruvo Center for Brain Health, Dr. Ritter received further training in diagnosing and treating neurodegenerative disorders such as Alzheimer’s disease, frontotemporal dementia, dementia with Lewy bodies, and chronic traumatic encephalopathy.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Cleveland Clinic Lou Ruvo Center for Brain Health
Behavioral Neurology and Neuropsychiatry
Las Vegas, NV USA

Fellowship - Behavioral Neurology Neuropsychiatry


Residency - University of Arizona Medical Center
Tucson, AZ USA

Residency - University of Arizona Medical Center
Tucson, AZ USA

Medical School - University of Colorado School of Medicine
Denver, CO USA

Undergraduate - University of Wisconsin
Madison, WI USA

Residency - University Medical Center
Tucson, AZ USA

Medical Education - University of Colorado Health Sciences Center
Denver, CO USA

Fellowship - Cleveland Clinic Lou Ruvo Center For Brain
Las Vegas, NV USA

Additional Training

  • Fellowship in Behavioral Neurology and Neuropsychiatry

    Cleveland Clinic Lou Ruvo Center for Brain Health, Las Vegas NV


    Residency in Psychiatry

    University of Arizona, Tucson, AZ



    University of Arizona, Tucson, AZ


    Medical Degree

    University of Colorado School of Medicine, Denver, Colorado


    Bachelor of Arts

    University of Wisconsin, Madison, Wisconsin


Professional Highlights

  • Publications

    RitterA, Banks, SA, Leger, G, Miller, J, Neuropsychologicaltesting in pathologically verified Alzheimer’s disease and frontotemporaldementia: How well do the Uniform Data Set measures differentiate betweendiseases? Alzheimer’s Disease and Associated Disorders. (accepted)

    RitterA, Cummings JL, Fluid Biomarkers inClinical Trials of Alzheimer's Disease Therapeutics. Front Neurol.2015 Aug 31;6:186.

    RitterA, Pillai JA, Treatment of VascularCognitive Impairment. Curr Treat Options Neurol. 2015 Aug;17(8):367.

    Research/Clinical Trials

    PrimaryInvestigator, Clinical and Translational Research Core (CTRC) for Center forBiomedical Research Excellence (COBRE).  National Institute of Health.Cleveland Clinic, Las Vegas, NV.

    Sub-Investigator,A Phase 3 Multicenter, Randomized, Double-Blind, Placebo-Controlled,Parallel-Group Study to Evaluate the Efficacy and Safety of Aducanumab inSubjects with Early Alzheimer’s Disease. Cleveland Clinic, Las Vegas, NV.

    Sub-Investigator,A Phase 2, Multicenter, Randomized, Double-Blind, Placebo-Controlled,Cross-over Study to Assess the Safety, Tolerability and Efficacy of AVP-786 for the Treatment of Disinhibition in Patients with Neurodegenerative Disorders.Avanir Pharmaceuticals Inc. Cleveland Clinic, Las Vegas, NV.

    Sub-Investigator,Rasagiline Rescue in Alzheimer’s DiseaseClinical Trial. Alzheimer’s Disease Cooperative Study.  ClevelandClinic, Las Vegas, NV.

    Sub-Investigator,Biomarker Qualification for Risk of MCIdue to AD and Safety and Efficacy Evaluation of Pioglitazone (AD-4833 SR 0.8 mgQD) in Delaying its Onset. Takeda Pharmaceuticals. Cleveland Clinic, LasVegas, NV.

    Sub-Investigator,Anti-Amyloid Treatment in Asymptomatic Alzheimer’s Disease, Lily. Cleveland Clinic, Las Vegas, NV.

    Sub-Investigator,A Randomized Controlled Trial ofCognitive Remediation and D-cycloserine for Individuals with Bipolar Disorder(DCS). University of Arizona, Tucson, AZ.


  • Psychiatry

Awards & Honors

  • Cleveland Clinic Excellence in Teaching Award for 2015-2016

    Cleveland Clinic

    Cleveland Clinic Excellence in Teaching Award for 2014-2015

    Cleveland Clinic

    Ely Lily Research Award for 2013-2014

    University of Arizona

    GME Resident Excellence and Leadership Scholarship for 2012-2013

    University of Arizona, Tucson, Arizona

    Junior Resident Award for Best Overall Performance for 2012-2013

    Department of Psychiatry, University of Arizona

    Dean’s List in Excellence in Teaching by a Houseofficer 2010-2011

    University of Arizona College of Medicine


  • American Academy of Neurology
  • American Neuropsychiatric Association
  • International Neuropsychological Society
  • International Parkinson and Movement Disorder Society
Research & Publications

Research & Publications

See publications for Aaron Ritter, MD.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 9/25/2018, Dr. Ritter has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

202 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Listens 5
Courtesy, Respect & Concern 5
Knows Medical History 4.8
Time Spent with Patient 5
Patient Rating of Doctor 4.9

31 Patient Comments

Reviewed on Oct 11, 2018

Dr. Ritter meets and exceeds any expectations one could have of him. He is great with my dad and his counsel enables us to hopefully provide a better quality of life for him in what must be and have been a difficult transition in his life in dealing with a disease that effects him the way it does.

Reviewed on Sep 17, 2018

I emailed with this provider many times during the three month period. Dr. Ritter was quick to respond.

Reviewed on Sep 13, 2018

excellent care provider ! very professional and very caring . listen to his patients

Reviewed on Aug 28, 2018

Superb Doctor; high intellect combined with excellent compassion. A very good listener that gives you a sense that he truly did hear what you had to say regarding your current medical status.

Reviewed on Aug 28, 2018

Doctor Ritter is quite detailed with a commitment to making sure the patient is clearly understanding his directions for care.

Reviewed on Aug 28, 2018

An impressive time 'flow' of arriving at the clinic and then intake to actual Doctor visit. Very good nurse assisting Doctor Ritter.

Reviewed on Aug 27, 2018

Dr. Ritter is an amazing doctor.

Reviewed on Aug 27, 2018

Dr. Ritter is a very good doctor. He always takes time to assess my wife's current condition fully. He listens to both her and I and always takes the proper amount of time to understand our concerns and always provides quality feedback. He is very prompt when responding to messages I send to him in the MyChart system.

Reviewed on Aug 20, 2018

Dr. Ritter helped me make a plan for tasks to maintain/improve my mental condition.

Reviewed on Aug 8, 2018

location is poor only because we live out in Boulder City. Love coming here and see her Dr. She also looks forward to seeing him. he is the best.

Reviewed on Jul 31, 2018

Within a reasonable time. It is more important that the doctor space his time with a patient than keep to a schefule, What is happening to my brain is scary, and I am grateful for the extra time when I need it.

Reviewed on Jul 17, 2018

Love Dr. Ritter. That causes the problem. He is so good, he is booked way ahead.

Reviewed on Jun 21, 2018

It was a wonderful experience coming to the Lou Ruvo Brain Center, Dr. Ritter was wonderful and I'm very happy my mother is under his care.

Reviewed on Jun 21, 2018

As my mother's guardian, I was very pleased with how Dr. Ritter took time to talk to me in private. No other provider has done this for us and it has created a lot of problems in the past since she doesn't understand a lot of things anymore.

Reviewed on Jun 19, 2018

Dr Ritter and his assistant Monneka are amazing. They are both very caring and really have taken an interest in my mother's care. Always very quick to respond on my chart. All the staff is great too.

Reviewed on May 31, 2018

daughter is down syndrome & can't communicate well so I answer for her. I'm her mother & POA and have learned over the years by body language and from what she can say. She loves Dr. Ritter and he and all staff are great with her and us.

Reviewed on May 31, 2018

Dr. was wonderful in every area.

Reviewed on May 22, 2018

Superb Physician

Reviewed on May 2, 2018

Dr Ritter is a gentle and very informed doctor. easy to talk to and listens intently.

Reviewed on Apr 17, 2018

Dr. Ritter is excellent and communicates well and is very thorough. He spent all the time that was necessary to explain and handle the questions I had. I was so pleased with him in every way, as was my caregiver. My caregiver was so impressed that she made a future appt. to see Dr. Ritter. He represented Cleveland Clinic very well and should be commended for his kind attitude , thoroughness, and great communication skills.

Reviewed on Apr 16, 2018

Great staff and Dr. Ritter very knowledgeable. good listener and compassionate. Great rapport with patient and family member

Reviewed on Apr 11, 2018

Dr. Ritter looked at quite a few issues that have been concerning me and was able to put things together. Great

Reviewed on Apr 9, 2018

grateful for Dr. caring attitude and professionalism .

Reviewed on Apr 3, 2018

this is the first time I been in this office and I rather be with this provider than the other provider. this provider appear to help me, we will see.

Reviewed on Feb 7, 2018

Dr. Ritter shows knowledge. concern, patience and respect--super.

Reviewed on Jan 11, 2018

Dr. Ritter was very kind and concerned.

Reviewed on Jan 10, 2018

I have been asked to participate in a 5 year study on aging as part of the control group. The program, tests involved and results available to me were thoroughly explained by Dr. Ritter.

Reviewed on Dec 18, 2017

Provider was patient, clear in explanations, friendly, efficient.

Reviewed on Dec 14, 2017

Very impressed with how we were treated by Dr Ritter!!

Reviewed on Dec 4, 2017

Absolutely a patient and sincerely interested physician . Listened without jumping to conclusions. Evaluated everything very carefully.

Reviewed on Nov 7, 2017

very attentive to our needs and questions

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