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Elson S. Floyd College of Medicine

Faculty and Staff Directory

Naomi Chaytor, PhD, ABPP

Professor and Chair
Department of Community and Behavioral Health

Additional Information

She is a licensed clinical psychologist and is Board Certified in Clinical Neuropsychology by the American Board of Professional Psychology. Prior to becoming a founding faculty member in the Elson S. Floyd College of Medicine in 2015, she was a practicing clinical neuropsychologist and faculty in the departments of Neurology and Physical Medicine and Rehabilitation at UW Medicine.


  • BSc (Honours), with distinction, University of Victoria
  • PhD, Clinical Psychology, Washington State University
  • Predoctoral Internship, Clinical Neuropsychology, Baylor College of Medicine
  • Postdoctoral Fellowship, Clinical Neuropsychology and Rehabilitation Psychology, University of Washington School of Medicine


Her current research is focused on with the neuropsychology of type 1 diabetes, including 1) glycemic variability and cognitive performance, 2) the relationships between cognitive performance and diabetes self-management behaviors, and 3) cognitive, quality of life and emotional correlates of medical technology use (e.g., artificial pancreas, continuous glucose monitoring). She is currently a Principal Investigator on two NIH/NIDDK R01 grants investigating the impact of glycemic variability on fluctuations in cognitive status in adults with type 1 diabetes, and evaluating an RCT of automated insulin delivery in older adults with type 1 diabetes.

In addition, she is interested in the use of cognition as a mediator/moderator of outcomes in clinical trials and the use of mobile phones to collect neuropsychological data in clinical research. Previous work has included projects evaluating the validity of mobile cognitive assessment, testing the effectiveness of depression treatment in adults with epilepsy, characterizing neuropsychological and emotional functioning in epilepsy and psychogenic nonepileptic events, and improving neuropsychological prediction of real-world outcomes (i.e., ecological validity).


For the MD program, Dr. Chaytor serves in the following roles; small group facilitator and component contributer for  MEDSCHLR; Nervous System and Behavioral Health component contributor; member of the Foundations of Medicine Subcommittee. She also supervises medical student research projects and Clinical Psychology graduate students.

Selected Publications

See all of Naomi’s research here.

  1. Miller KM, Kanapka LG, Rickels MR, Ahmann AJ, Aleppo G, Ang L, Bhargava A, Bode BW, Carlson A, Chaytor NS, Gannon G, Goland R, Hirsch IB, Kiblinger L, Kruger D, Kudva YC, Levy CJ, McGill JB, O’Malley G, Peters AL, Philipson LH, Philis-Tsimikas A, Pop-Busui R, Salam M, Shah VN, Thompson MJ, Vendrame F, Verdejo A, Weinstock RS, Young L, Pratley R. Benefit of Continuous Glucose Monitoring in Reducing Hypoglycemia Is Sustained Through 12 Months of Use Among Older Adults with Type 1 Diabetes. Diabetes Technol Ther. 2022 Jun;24(6):424-434. doi: 10.1089/dia.2021.0503. Epub 2022 Apr 11. PubMed PMID: 35294272.
  2. Jacobson AM, Ryan CM, Braffett BH, Gubitosi-Klug RA, Lorenzi GM, Luchsinger JA, Trapani VR, Bebu I, Chaytor N, Hitt SM, Farrell K, Lachin JM. Cognitive performance declines in older adults with type 1 diabetes: results from 32 years of follow-up in the DCCT and EDIC Study. Lancet Diabetes Endocrinol. 2021 Jul;9(7):436-445. doi: 10.1016/S2213-8587(21)00086-3. Epub 2021 May 27. PubMed PMID: 34051936; PubMed Central PMCID: PMC8583716.
  3. Chaytor NS, Barbosa-Leiker C, Germine LT, Fonseca LM, McPherson SM, Tuttle KR. Construct validity, ecological validity and acceptance of self-administered online neuropsychological assessment in adults. Clin Neuropsychol. 2021 Jan;35(1):148-164. doi: 10.1080/13854046.2020.1811893. Epub 2020 Sep 3. PubMed PMID: 32883156; PubMed Central PMCID: PMC8982107.
  4. Singh S, Strong RW, Jung L, Li FH, Grinspoon L, Scheuer LS, Passell EJ, Martini P, Chaytor N, Soble JR, Germine L. The TestMyBrain Digital Neuropsychology Toolkit: Development and Psychometric Characteristics. J Clin Exp Neuropsychol. 2021 Oct;43(8):786-795. doi: 10.1080/13803395.2021.2002269. Epub 2021 Dec 15. PubMed PMID: 34907842; PubMed Central PMCID: PMC8922997.
  5. Pratley RE, Kanapka LG, Rickels MR, Ahmann A, Aleppo G, Beck R, Bhargava A, Bode BW, Carlson A, Chaytor NS, Fox DS, Goland R, Hirsch IB, Kruger D, Kudva YC, Levy C, McGill JB, Peters A, Philipson L, Philis-Tsimikas A, Pop-Busui R, Shah VN, Thompson M, Vendrame F, Verdejo A, Weinstock RS, Young L, Miller KM. Effect of Continuous Glucose Monitoring on Hypoglycemia in Older Adults With Type 1 Diabetes: A Randomized Clinical Trial. JAMA. 2020 Jun 16;323(23):2397-2406. doi: 10.1001/jama.2020.6928. PubMed PMID: 32543682; PubMed Central PMCID: PMC7298607.
  6. Trief PM, Foster NC, Chaytor N, Hilliard ME, Kittelsrud JM, Jaser SS, Majidi S, Corathers SD, Bzdick S, Adkins DW, Weinstock RS. Longitudinal Changes in Depression Symptoms and Glycemia in Adults With Type 1 Diabetes. Diabetes Care. 2019 Jul;42(7):1194-1201. doi: 10.2337/dc18-2441. Epub 2019 May 21. PubMed PMID: 31221694; NIHMSID:NIHMS1642370.
  7. Chaytor, NS, Barbosa-Leiker, C, Ryan, CM, Germine, LT, Hirsch, IB, and Weinstock, RS. (2019). Clinically Significant Cognitive Impairment in Older Adults with Type 1 Diabetes. Journal of Diabetes and Its Complications, 33(1), 91-97. PMID: 29728302
  8. Germine, L, Reinecke, K & Chaytor, N (2019): Digital neuropsychology: challenges and opportunities at the intersection of science and software, The Clinical Neuropsychologist, 33(2): 271-286. PMID: 30614374
  9. Chaytor, N, Riddlesworth, T, Bzdick, S, Odegard, P, Gray, S, Lock, J, Miller, K, Beck, R for the T1D Exchange Severe Hypoglycemia in Older Adults with Type 1 Diabetes Study Group. (2017). The relationship between neuropsychological assessment, numeracy, and functional status in older adults with type 1 diabetes. Neuropsychological Rehabilitation. Nov 25: 1-15. PMID: 26605669
  10. Weinstock RS, DuBose SN, Bergenstal RM, Chaytor NS, Peterson C, Olson BA, Munshi MN, Perrin AJ, Miller KM, Beck RW, Liljenquist DR, Aleppo G, Buse JB, Kruger D, Bhargava A, Goland RS, Edelen RC, Pratley RE, Peters AL, Rodriguez H, Ahmann AJ, Lock JP, Garg SK, Rickels MR, Hirsch IB; T1D Exchange Severe Hypoglycemia in Older Adults with Type 1 Diabetes Study Group (2016). Risk factors associated with severe hypoglycemia in older adults with type 1 diabetes. Diabetes Care, 39(4), 603-10. PMID: 26681721

Naomi Chaytor
Professor and Chair