Nalin Payakachat, Ph.D., B.Pharm., MSc


Associate Professor, Division of Pharmaceutical Evaluation & Policy, College of Pharmacy


Phone: 501-686-7701
Fax: 501-686-5156

Research Experience

I received a Ph.D. in health outcome measures from Purdue University in August 2008. My research focuses on methods for evaluating patient-reported outcomes such as health and health-related quality of life outcomes and translating those outcomes into economic evaluations. My expertise includes survey instrument development, psychometric testing, patient-reported outcomes methodological design, and health economics and outcomes research.

After the Arkansas Medical Marijuana Amendment of 2016 had passed, Arkansas became the 29th state to legalize use of medical cannabis (MC) for an approved set of medical conditions. There is limited evidence in the literature in regard to benefits and harms of medical cannabis for various conditions. I recognize the critical needs for more research in medical cannabis. Our research team launched a longitudinal observational survey study (Arkansas Medical Cannabis Study: in February 2018 to collect baseline data (before the availability of legal medical cannabis products) from ~2,000 Arkansan participants. The follow-up survey was just launched in October 2019, after the products became available in Arkansas in March 2019.

Recent Publications

Gladden M, Hung D, Bhandari NR, Russell L, White L, Franks AM, Fantegrossi W, Payakachat N. Arkansas Community’s Attitudes Toward the Regulation of Medical Cannabis and the Pharmacist Involvement in Arkansas Medical Cannabis. JAPhA 2019.

Bhandari NR, Payakachat N, Fletcher DA, Sung YS, Eswaran H, Benton T, Lowery CL. Validation of Newly Developed Surveys to Evaluate Patients’ and Providers’ Satisfaction with Telehealth Obstetric Services. Telemedicine and e-Health. Accepted September 3, 2019.

Khalil M, Bhandari NR, Payakachat N, Davis R, Raheem OA, Kamel M. Perioperative Mortality and Morbidity of Outpatient versus Inpatient Robot-assisted Radical Prostatectomy: A Propensity Matched Analysis. Urologic Oncology: Seminars and Original Investigations 2019,

Khalil M, Bhandari NR, Payakachat N, Davis R, Kamel M. Contemporary Perioperative Morbidity and Mortality of Minimally Invasive Versus Open Partial Nephrectomy in Obese Patients with Kidney Cancer. J Endourol 2019;

Payakachat N, Long CR, McElfish PA, Narcisse M, Felix HC, Bursac Z, Hudson TJ. Prevalence, Health and Resource Utilization, and Unmet Healthcare Needs of Native Hawaiian and Pacific Islander Children with Developmental Disabilities. Am J Intellect Dev Disabil 2019;124(3):234-47.

Brown C, Tilford JM, Payakachat N, Williams DK, Kuhlthau KA, Pyne JM, Hoefman RJ, Brouwer Measuring health spillover effects in caregivers of children with autism spectrum disorder: A comparison of the EQ-5D and SF-6D. Pharmacoeconomics 2019 2019;37(4):609-20.

Teeter BS, Stafford R, Payakachat N, Reid J, Thiessen K, Franks A, O’Brien C. Pharmacy student utilization of patient-centered communication skills during an Introductory Pharmacy Practice Experience. Am J Pharm Edu 2018, doi: 5688/ajpe7244

Kamel M, Bhandari NR, Davis R, Payakachat N. Health-related quality of life among elderly Americans diagnosed with upper tract urothelial carcinoma. Urologic Oncology: Seminars and Original Investigations 2018; 36(10):469.e13-469.e20

Hayes CJ, Payakachat N, Li C. Evaluation of Opioid Use among Patients with Back Disorders and Arthritis. Quality of Life Research 2018;27(11):3021-35.

Narcisse M, Felix H, Long C, Teresa H, Payakachat N, Bursac Z, McElfish P. Frequency and predictors of health services use by Native Hawaiians and Pacific Islanders: evidence from the U.S. National Health Interview Survey. BMC Health Services Research 2018;18:575

Bhandari NR, Day KA, Payakachat N, Franks A, McCain K, Ragland D. Use and Risk Perception of Electronic Nicotine Delivery Systems and tobacco in Pregnancy. Women’s Health Issues 2018; 28(3): 251-7.

Hayes CJ, Li X, Li C, Shah A, Kathe N, Bhandari NR, Payakachat N. Health-Related Quality of Life among Chronic Opioid Users, Non-Chronic Opioid Users, and Non-Opioid Users with Chronic Noncancer Pain. Health Services Research 2018; 53(5):3329-49. doi: 10.1111/1475- 6773.12836

McElfish PA, Long CR, Payakachat N, Felix H, Bursac Z, Rowland B, Hudson, J, Narcisse, M. Cost-related nonadherence to medication treatment plans: Native Hawaiian and Pacific Islander National Health Interview Survey, 2014. Med Care 2018;56(4):341-9.

Bhandari NR, Kathe N, Hayes C, Payakachat N. Reliability and validity of SF-12v2 among adults with self-reported cancer. Research in Social and Administrative Pharmacy 2018. In press. DOI:

Payakachat N, Hadden KB, Hanner J, Ragland D. Maternal knowledge of pertussis and Tdap vaccine and use of vaccine information statement. Health Education Journal 2018;

Kathe N, Hayes J, Bhandari NR, Payakachat N. Assessment of reliability and validity of SF12v2 among diabetic population. Value in Health 2018;21(4): 432-440.

Payakachat N, Tilford JM, Kuhlthau K. Parent-reported utilization of interventions by toddlers and preschoolers with autism spectrum disorder. Psychiatric Services 2018; 69:186–194; doi: 10.1176/

Franks AM, Hawes WA, McCain KR, Payakachat N. Electronic cigarette use, knowledge, and perceptions among health professional students. Currents in Pharmacy Teaching and Learning 2017.

Pate AN, Payakachat N, Harrell TK, Pate AK, Caldwell DJ, Franks AM. Measurement of grit and correlation to student pharmacist academic performance: a multicenter study. AJPE 2017:81(6): Article 105

Kuhlthau KA, McDonell E, Coury DL, Payakachat N, Macklin E. Associations of quality of life with health-related characteristics among children with autism. Autism 2018; 22(7):804-813, doi: 10.1177/1362361317704420.

Rhoads SJ, Serrano CI, Lynch C, Ounpraseuth S, Gauss CH, Payakachat N, Lowery C, Eswaran Exploring the Implementation of mHealth Monitoring in Postpartum Women with Hypertension. Telemedicine and e-Health 2017, doi:10.1089/tmj.2016.0272.

Hayes CJ, Bhandari NR, Kathe N, Payakachat N. Reliability and validity of the Medical Outcomes Study Short Form-12 Version 2 (SF-12v2) in adults with non-cancer pain. Healthcare 2017, 5, 22; doi:10.3390/healthcare5020022

Stafford R, Thomas, Payakachat N, Diemer T, Lang M, Kordsmeier B, Curran G. Using an array of implementation strategies to improve success rates of pharmacist-initiated medication therapy management services in community pharmacies. Research in Social and Administrative Pharmacy 2017;13(5):938-946

Doshi P, Tilford JM, Kuo D, Ounpraseuth S, Payakachat N. Do insurance mandates affect racial disparities in outcomes for children with autism? Maternal and Child Health Journal 2017;21(2):351-66. DOI: 1007/s10995-016-2120-z.

Castleberry A, Payakachat N, Carle MH, Neill KK, Nolen A, Franks AM. Qualitative analysis of written reflections during a Teaching Certificate Program. American Journal of Pharmaceutical Education 2016;80(1): Article

Payakachat N, Tilford JM, Ungar National Database for Autism Research (NDAR): Big data opportunities for health services research and technology assessment. Pharmacoeconomics 2016;34(2):127-38.

Payakachat N, Hadden KB, Ragland D. Promoting Tdap immunization in pregnancy: Associations between maternal perceptions and vaccination rates Vaccine. Vaccine 2016;34(1):179-186. doi: 10.1016/j.vaccine.2015.09.062.

Tilford JM, Payakachat N. Progress in measuring family spillover effects for economic (Editorial) Expert Review of Pharmacoeconomics & Outcomes Research 2015; 2:195-198. doi:10.1586/14737167.2015.997216

Ragland D, Payakachat N. Health literacy in obstetric patients: A pharmacist’s experience with the New Vital Sign. Pharmacy 2015;3(4):372-378. doi: 3390/pharmacy3040372

Gubbins PO, Ragland D, Castleberry AN, Payakachat N. Family commitment and work characteristics among pharmacists. Pharmacy 2015;3: 386-398. doi:10.3390/pharmacy3040386

Tilford JM, Payakachat N, van Excel J, Erica Kovacs, Jeffery Pyne, Karen Kuhlthau, Werner Treatment for sleep problems in children with autism and caregiver spillover effects. Journal of Autism and Developmental Disorders, 2015;45(11):3613-23. doi: 10.1007/s10803-015-2507-5.

Payakachat N, Ali M, Tilford JM. Can the EQ-5D detect meaningful change? A systematic Pharmacoeconomics 2015, 33(11):1137-54. doi: 10.1007/s40273-015-0295-6

Said Q, King A, Erickson S, Payakachat N, Hutchison LC. Self-reported plan switching in Medicare Part D: 2006-2010. American Journal of Pharmacy Benefits 2015;6(6):e157-e168.

Ragland D, Payakachat N, Stafford RA. Emergency contraception counseling in a retail pharmacy setting: A pilot study. Journal of Pharmacy Practice 2015; 28: 261-265.

Ragland D, Battle M, Kueter TJ, Payakachat N. Consumer attitudes towards and satisfaction with emergency contraception counseling: Experience from clinic and retail pharmacy settings. International Journal of Pharmacy Practice 2015. January 1. DOI: 1111/ijpp.12166