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Amit Kumar

TitleAssistant Professor
Faculty RankAssistant Professor
InstitutionNorthern Arizona University
DepartmentPhyscial Therapy
AddressPO Box 15105
Flagstaff AZ 86011
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    Collapse Research 
    Collapse research activities and funding
    R03AG060345     (KUMAR, AMIT)Sep 1, 2018 - May 31, 2021
    NIH
    Hospital-Based Rehabilitation Services in Older Adults After Hip Fracture and Impact on Health Outcomes
    Role: Principal Investigator
    R03HD096372     (KUMAR, AMIT)Sep 12, 2018 - Aug 31, 2021
    NIH
    Association of Timing of Inpatient Rehabilitation in Ischemic Stroke and Health Outcomes
    Role: Principal Investigator
    R01MD017719     (KUMAR, AMIT)Sep 11, 2022 - Nov 30, 2027
    NIH
    Race and Medicare-Medicaid Dual Enrollment Disparities in Access to Quality and Intensity of Post-Acute Rehabilitation Care and Health Outcomes in Patients with Stroke
    Role: Principal Investigator

    Collapse Bibliographic 
    Collapse selected publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Roy I, Karmarkar AM, Lininger MR, Jain T, Martin BI, Kumar A. Association Between Hospital Participation in Value-Based Programs and Timely Initiation of Post-Acute Home Health Care, Functional Recovery, and Hospital Readmission After Joint Replacement. Phys Ther. 2023 Dec 06; 103(12). PMID: 37694820.
      Citations:    Fields:    Translation:Humans
    2. Bosch PR, Barr D, Roy I, Fabricant M, Mann A, Mangone E, Karmarkar A, Kumar A. Association of Caregiver Availability and Training With Patient Community Discharge After Stroke. Arch Rehabil Res Clin Transl. 2023 Mar; 5(1):100251. PMID: 36968162.
      Citations:    
    3. Kumar A, Roy I, Warren M, Shaibi SD, Fabricant M, Falvey JR, Vashist A, Karmarkar AM. Impact of Hospital-Based Rehabilitation Services on Discharge to the Community by Value-Based Payment Programs After Joint Replacement Surgery. Phys Ther. 2022 04 01; 102(4). PMID: 35079829.
      Citations:    Fields:    Translation:Humans
    4. Bosch PR, Karmarkar AM, Roy I, Fehnel CR, Burke RE, Kumar A. Association of Medicare-Medicaid Dual Eligibility and Race and Ethnicity With Ischemic Stroke Severity. JAMA Netw Open. 2022 03 01; 5(3):e224596. PMID: 35357456.
      Citations: 7     Fields:    Translation:Humans
    5. Kumar A, Roy I, Bosch PR, Fehnel CR, Garnica N, Cook J, Warren M, Karmarkar AM. Medicare Claim-Based National Institutes of Health Stroke Scale to Predict 30-Day Mortality and Hospital Readmission. J Gen Intern Med. 2022 08; 37(11):2719-2726. PMID: 34704206.
      Citations: 4     Fields:    Translation:Humans
    6. Rivera-Hernandez M, Ferdows NB, Kumar A. The Impact of the COVID-19 Epidemic on Older Adults in Rural and Urban Areas in Mexico. J Gerontol B Psychol Sci Soc Sci. 2021 08 13; 76(7):e268-e274. PMID: 33367752.
      Citations: 15     Fields:    Translation:Humans
    7. Kumar A, Roy I, Karmarkar AM, Erler KS, Rudolph JL, Baldwin JA, Rivera-Hernandez M. Shifting US Patterns of COVID-19 Mortality by Race and Ethnicity From June-December 2020. J Am Med Dir Assoc. 2021 05; 22(5):966-970.e3. PMID: 33775597.
      Citations: 5     Fields:    Translation:HumansCellsPHPublic Health
    8. Hiremath SV, Karmarkar AM, Kumar A, Coffman DL, Marino RJ. Factors associated with post-acute functional status and discharge dispositions in individuals with spinal cord injury. J Spinal Cord Med. 2022 Jan; 45(1):126-136. PMID: 33606613.
      Citations: 4     Fields:    Translation:Humans
    9. Keeney T, Kumar A, Erler KS, Karmarkar AM. Making the Case for Patient-Reported Outcome Measures in Big-Data Rehabilitation Research: Implications for Optimizing Patient-Centered Care. Arch Phys Med Rehabil. 2022 05; 103(5S):S140-S145. PMID: 33548207.
      Citations: 5     Fields:    Translation:Humans
    10. Panagiotou OA, Voorhies KR, Keohane LM, Kim D, Adhikari D, Kumar A, Rivera-Hernandez M, Rahman M, Gozalo P, Gutman R, Mor V, Trivedi AN. Association of Inclusion of Medicare Advantage Patients in Hospitals' Risk-Standardized Readmission Rates, Performance, and Penalty Status. JAMA Netw Open. 2021 02 01; 4(2):e2037320. PMID: 33595661.
      Citations: 3     Fields:    Translation:Humans
    11. Rivera-Hernandez M, Matos-Moreno A, Ferdows NB, Kumar A. Posthospital Nursing Home Utilization and Quality Indicators Among Medicare Beneficiaries in Puerto Rico: Comparison With the United States. J Am Med Dir Assoc. 2021 03; 22(3):712-716.e4. PMID: 33306998.
      Citations: 1     Fields:    Translation:Humans
    12. Canori A, Kumar A, Hiremath SV. Factors associated with multiple hospital readmissions for individuals with spinal cord injury. Commonhealth (Phila). 2020 Sep; 1(2):57-61. PMID: 33554212.
      Citations:    
    13. Ferdows NB, Aranda MP, Baldwin JA, Baghban Ferdows S, Ahluwalia JS, Kumar A. Assessment of Racial Disparities in Mortality Rates Among Older Adults Living in US Rural vs Urban Counties From 1968 to 2016. JAMA Netw Open. 2020 08 03; 3(8):e2012241. PMID: 32744631.
      Citations: 14     Fields:    Translation:Humans
    14. Rivera-Hernandez M, Fabius CD, Fashaw S, Downer B, Kumar A, Panagiotou OA, Epstein-Lubow G. Quality of Post-Acute Care in Skilled Nursing Facilities That Disproportionately Serve Hispanics With Dementia. J Am Med Dir Assoc. 2020 11; 21(11):1705-1711.e3. PMID: 32741644.
      Citations: 2     Fields:    Translation:Humans
    15. Li CY, Karmarkar A, Kuo YF, Mehta HB, Mallinson T, Haas A, Kumar A, Ottenbacher KJ. A comparison of three methods in categorizing functional status to predict hospital readmission across post-acute care. PLoS One. 2020; 15(5):e0232017. PMID: 32379765.
      Citations: 3     Fields:    Translation:Humans
    16. Rundell SD, Resnik L, Heagerty PJ, Kumar A, Jarvik JG. Performance of the Functional Comorbidity Index (FCI) in Prognostic Models for Risk Adjustment in Patients With Back Pain. PM R. 2020 09; 12(9):891-898. PMID: 31901004.
      Citations: 3     Fields:    Translation:Humans
    17. Kumar A, Rivera-Hernandez M, Karmarkar AM, Chou LN, Kuo YF, Baldwin JA, Panagiotou OA, Burke RE, Ottenbacher KJ. Social and Health-Related Factors Associated with Enrollment in Medicare Advantage Plans in Older Adults. J Am Geriatr Soc. 2020 02; 68(2):313-320. PMID: 31617948.
      Citations: 2     Fields:    Translation:Humans
    18. Schwartz ML, Kosar CM, Mroz TM, Kumar A, Rahman M. Quality of Home Health Agencies Serving Traditional Medicare vs Medicare Advantage Beneficiaries. JAMA Netw Open. 2019 09 04; 2(9):e1910622. PMID: 31483472.
      Citations: 16     Fields:    Translation:Humans
    19. Rundell SD, Resnik L, Heagerty PJ, Kumar A, Jarvik JG. Comparing Performance of Comorbidity Indices in Predicting Functional Status, Health-Related Quality of Life, and Total Health Care Use in Older Adults With Back Pain. J Orthop Sports Phys Ther. 2019 Jul 23; 1-18. PMID: 31337267.
      Citations: 1     Fields:    
    20. Panagiotou OA, Kumar A, Gutman R, Keohane LM, Rivera-Hernandez M, Rahman M, Gozalo PL, Mor V, Trivedi AN. Hospital Readmission Rates in Medicare Advantage and Traditional Medicare: A Retrospective Population-Based Analysis. Ann Intern Med. 2019 07 16; 171(2):99-106. PMID: 31234205.
      Citations: 20     Fields:    Translation:Humans
    21. Kumar A, Adhikari D, Karmarkar A, Freburger J, Gozalo P, Mor V, Resnik L. Variation in Hospital-Based Rehabilitation Services Among Patients With Ischemic Stroke in the United States. Phys Ther. 2019 05 01; 99(5):494-506. PMID: 31089705.
      Citations: 15     Fields:    Translation:Humans
    22. Zhang T, Jambhekar B, Kumar A, Rizvi SA, Resnik L, Shireman TI. Assessing the effects of post-acute rehabilitation services on health care outcomes for people with multiple sclerosis. Mult Scler Relat Disord. 2019 May; 30:277-283. PMID: 30852305.
      Citations: 1     Fields:    Translation:Humans
    23. Kumar A, Resnik L, Karmarkar A, Freburger J, Adhikari D, Mor V, Gozalo P. Use of Hospital-Based Rehabilitation Services and Hospital Readmission Following Ischemic Stroke in the United States. Arch Phys Med Rehabil. 2019 07; 100(7):1218-1225. PMID: 30684485.
      Citations: 14     Fields:    Translation:Humans
    24. B?langer E, Silver B, Meyers DJ, Rahman M, Kumar A, Kosar C, Mor V. A Retrospective Study of Administrative Data to Identify High-Need Medicare Beneficiaries at Risk of Dying and Being Hospitalized. J Gen Intern Med. 2019 03; 34(3):405-411. PMID: 30604120.
      Citations: 12     Fields:    Translation:Humans
    25. Kumar A, Rahman M, Trivedi AN, Resnik L, Gozalo P, Mor V. Comparing post-acute rehabilitation use, length of stay, and outcomes experienced by Medicare fee-for-service and Medicare Advantage beneficiaries with hip fracture in the United States: A secondary analysis of administrative data. PLoS Med. 2018 06; 15(6):e1002592. PMID: 29944655.
      Citations: 49     Fields:    Translation:Humans
    26. Collins DM, Downer B, Kumar A, Krishnan S, Li CY, Markides KS, Karmarkar AM. Impact of Multiple Chronic Conditions on Activity Limitations Among Older Mexican-American Care Recipients. Prev Chronic Dis. 2018 05 03; 15:E51. PMID: 29729133.
      Citations: 13     Fields:    Translation:Humans
    27. Rivera-Hernandez M, Kumar A, Epstein-Lubow G, Thomas KS. Disparities in Nursing Home Use and Quality Among African American, Hispanic, and White Medicare Residents With Alzheimer's Disease and Related Dementias. J Aging Health. 2019 08; 31(7):1259-1277. PMID: 29717902.
      Citations: 15     Fields:    Translation:Humans
    28. Kumar A, Karmarkar A, Downer B, Vashist A, Adhikari D, Al Snih S, Ottenbacher K. Current Risk Adjustment and Comorbidity Index Underperformance in Predicting Post-Acute Utilization and Hospital Readmissions After Joint Replacements: Implications for Comprehensive Care for Joint Replacement Model. Arthritis Care Res (Hoboken). 2017 11; 69(11):1668-1675. PMID: 28118530.
      Citations: 11     Fields:    Translation:Humans
    29. Teppala S, Ottenbacher KJ, Eschbach K, Kumar A, Al Snih S, Chan WJ, Reistetter TA. Variation in Functional Status After Hip Fracture: Facility and Regional Influence on Mobility and Self-Care. J Gerontol A Biol Sci Med Sci. 2017 Oct 01; 72(10):1376-1382. PMID: 28052981.
      Citations: 3     Fields:    Translation:Humans
    30. Krishnan S, Pappadis MR, Weller SC, Stearnes M, Kumar A, Ottenbacher KJ, Reistetter TA. Needs of Stroke Survivors as Perceived by Their Caregivers: A Scoping Review. Am J Phys Med Rehabil. 2017 07; 96(7):487-505. PMID: 28628537.
      Citations: 19     Fields:    Translation:Humans
    31. Silberschmidt S, Kumar A, Raji MM, Markides K, Ottenbacher KJ, Al Snih S. Life-Space Mobility and Cognitive Decline Among Mexican Americans Aged 75 Years and Older. J Am Geriatr Soc. 2017 Jul; 65(7):1514-1520. PMID: 28276089.
      Citations: 17     Fields:    Translation:Humans
    32. Kumar A, Graham JE, Resnik L, Karmarkar AM, Tan A, Deutsch A, Ottenbacher KJ. Comparing Comorbidity Indices to Predict Post-Acute Rehabilitation Outcomes in Older Adults. Am J Phys Med Rehabil. 2016 12; 95(12):889-898. PMID: 27149597.
      Citations: 10     Fields:    Translation:Humans
    33. Kumar AS, Sowpati DT, Mishra RK. Single Amino Acid Repeats in the Proteome World: Structural, Functional, and Evolutionary Insights. PLoS One. 2016; 11(11):e0166854. PMID: 27893794.
      Citations: 14     Fields:    Translation:HumansAnimalsCells
    34. Downer B, Kumar A, Veeranki SP, Mehta HB, Raji M, Markides KS. Mexican-American Dementia Nomogram: Development of a Dementia Risk Index for Mexican-American Older Adults. J Am Geriatr Soc. 2016 12; 64(12):e265-e269. PMID: 27996114.
      Citations: 13     Fields:    Translation:Humans
    35. Kumar A, Karmarkar AM, Graham JE, Resnik L, Tan A, Deutsch A, Ottenbacher KJ. Comorbidity Indices Versus Function as Potential Predictors of 30-Day Readmission in Older Patients Following Postacute Rehabilitation. J Gerontol A Biol Sci Med Sci. 2017 02; 72(2):223-228. PMID: 27492451.
      Citations: 17     Fields:    Translation:Humans
    36. Graham JE, Prvu Bettger J, Fisher SR, Karmarkar AM, Kumar A, Ottenbacher KJ. Duration to Admission and Hospital Transfers Affect Facility Rankings from the Postacute 30-Day Rehospitalization Quality Measure. Health Serv Res. 2017 06; 52(3):1024-1039. PMID: 27349684.
      Citations: 3     Fields:    Translation:Humans
    37. Kumar A, Wong R, Ottenbacher KJ, Al Snih S. Prediabetes, undiagnosed diabetes, and diabetes among Mexican adults: findings from the Mexican Health and Aging Study. Ann Epidemiol. 2016 Mar; 26(3):163-70. PMID: 26872919.
      Citations: 23     Fields:    Translation:Humans
    38. Kumar A, Graham JE, Resnik L, Karmarkar AM, Deutsch A, Tan A, Al Snih S, Ottenbacher KJ. Examining the Association Between Comorbidity Indexes and Functional Status in Hospitalized Medicare Fee-for-Service Beneficiaries. Phys Ther. 2016 Feb; 96(2):232-40. PMID: 26564253.
      Citations: 16     Fields:    Translation:Humans
    39. Kumar A, Karmarkar AM, Tan A, Graham JE, Arcari CM, Ottenbacher KJ, Snih SA. The effect of obesity on incidence of disability and mortality in Mexicans aged 50 years and older. Salud Publica Mex. 2015; 57 Suppl 1:S31-8. PMID: 26172232.
      Citations: 12     Fields:    Translation:Humans
    40. Fisher SR, Kuo YF, Sharma G, Raji MA, Kumar A, Goodwin JS, Ostir GV, Ottenbacher KJ. Mobility after hospital discharge as a marker for 30-day readmission. J Gerontol A Biol Sci Med Sci. 2013 Jul; 68(7):805-10. PMID: 23254776.
      Citations: 48     Fields:    Translation:Humans
    41. Ottenbacher AJ, Snih SA, Karmarkar A, Lee J, Samper-Ternent R, Kumar A, Bindawas S, Markides KS, Ottenbacher KJ. Routine physical activity and mortality in Mexican Americans aged 75 and older. J Am Geriatr Soc. 2012 Jun; 60(6):1085-91. PMID: 22647251.
      Citations: 14     Fields:    Translation:Humans
    42. Kumar A, Schmeler MR, Karmarkar AM, Collins DM, Cooper R, Cooper RA, Shin H, Holm MB. Test-retest reliability of the functional mobility assessment (FMA): a pilot study. Disabil Rehabil Assist Technol. 2013 May; 8(3):213-9. PMID: 22612721.
      Citations: 17     Fields:    Translation:Humans
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