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Efren J. Flores, M.D.

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Biography
University of Puerto Rico, Rio Piedras Cambus, San Juan, PRBS2001Biology
University of Puerto Rico, School of Medicine, San Juan, PRMD2005Medicine
Massachusetts General Hospital, Dept. of Radiology, Boston, MA2010Radiology

Overview
I am a health services researcher focused on understanding health disparities to inform the development of innovative and multidisciplinary interventions to enhance health equity for underserved patient populations. My clinical experience and personal background serve as strong foundations for my clinical research at the intersection of equity, innovation and healthcare. The research work from our group has resulted in multiple peer reviewed publications, scientific presentations and grant funding.

Featured Content

Bibliographic
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. Flores EJ, Narayan AK. Beyond the AJR: "Using prediction-models to reduce persistent racial/ethnic disparities in draft 2020 USPSTF lung-cancer screening guidelines". AJR Am J Roentgenol. 2021 Mar 24. PMID: 33759560.
    Citations:    Fields:    
  2. Snyder A, Jang S, Nazari IS, Som A, Flores EJ, Succi MD, Little BP. Google search volume trends for cancer screening terms during the COVID-19 pandemic. J Med Screen. 2021 Mar 04; 969141321999426. PMID: 33663240.
    Citations:    Fields:    
  3. Villa Camacho JC, Flores EJ, Pena MA, Little BP, Parikh Y, Narayan AK, Miles RC. Addressing Linguistic Barriers to Care: Evaluation of Breast Cancer Online Patient Educational Materials for Spanish-Speaking Patients. J Am Coll Radiol. 2021 Mar 04. PMID: 33676914.
    Citations:    Fields:    
  4. Lang M, Li MD, Jiang KZ, Yoon BC, Mendoza DP, Flores EJ, Rincon SP, Mehan WA, Conklin J, Huang SY, Lang AL, Giao DM, Leslie-Mazwi TM, Kalpathy-Cramer J, Little BP, Buch K. Severity of Chest Imaging is Correlated with Risk of Acute Neuroimaging Findings among Patients with COVID-19. AJNR Am J Neuroradiol. 2021 Feb 04. PMID: 33541897.
    Citations:    Fields:    
  5. Chonde DB, Pourvaziri A, Williams J, McGowan J, Moskos M, Alvarez C, Narayan AK, Daye D, Flores EJ, Succi MD. RadTranslate: An Artificial Intelligence-Powered Intervention for Urgent Imaging to Enhance Care Equity for Patients With Limited English Proficiency During the COVID-19 Pandemic. J Am Coll Radiol. 2021 Jan 31. PMID: 33609456.
    Citations:    Fields:    
  6. Miles RC, Flores EJ, Lopez DB, Sohn YJ, Gillis EA, Lehman CD, Narayan AK. Leveraging Emergency Department Encounters to Improve Cancer Screening Adherence. J Am Coll Radiol. 2021 Jan 23. PMID: 33497614.
    Citations:    Fields:    
  7. Narayan AK, Gupta Y, Little BP, Shepard JO, Flores EJ. Lung cancer screening eligibility and use with low-dose computed tomography: Results from the 2018 Behavioral Risk Factor Surveillance System cross-sectional survey. Cancer. 2021 Mar 01; 127(5):748-756. PMID: 33206388.
    Citations:    Fields:    
  8. Lang M, Yeung T, Shepard JO, Sharma A, Sharma A, Petranovic M, Flores EJ, McLoud TC, Som A, Saini S, Prabhakar AM, D Succi M, Little BP. Operational Challenges of a Low-Dose CT Lung Cancer Screening Program During the Coronavirus Disease 2019 Pandemic. Chest. 2021 03; 159(3):1288-1291. PMID: 33121979.
    Citations: 1     Fields:    Translation:HumansPHPublic Health
  9. Som A, Lang M, Yeung T, Carey D, Garrana S, Mendoza DP, Flores EJ, Li MD, Sharma A, Sharma A, McDermott S, Shepard JO, Little BP. Implementation of the Radiological Society of North America Expert Consensus Guidelines on Reporting Chest CT Findings Related to COVID-19: A Multireader Performance Study. Radiol Cardiothorac Imaging. 2020 Oct; 2(5):e200276. PMID: 33778625.
    Citations:    
  10. Wang GX, Neil JM, Fintelmann FJ, Little BP, Narayan AK, Flores EJ. Guideline-Discordant Lung Cancer Screening: Emerging Demand and Provided Indications. J Am Coll Radiol. 2021 Mar; 18(3 Pt A):395-405. PMID: 32905787.
    Citations:    Fields:    
  11. Colón-Flores LG, Rosario-Cruz V, Gonzalez-Soto MJ, Flores EJ, Rodriguez de Arzola O. Challenges and Lessons Learned After Hurricane Maria: Learning Points for the Medical Student Community. Yale J Biol Med. 2020 08; 93(3):429-432. PMID: 32874149.
    Citations:    Fields:    
  12. Stowell JT, Narayan AK, Wang GX, Fintelmann FJ, Flores EJ, Sharma A, Petranovic M, Shepard JO, Little BP. Factors affecting patient adherence to lung cancer screening: A multisite analysis. J Med Screen. 2020 Aug 26; 969141320950783. PMID: 32847462.
    Citations:    Fields:    
  13. Lang M, Yeung T, Mendoza DP, Flores EJ, Som A, Lang AL, Pianykh OS, Lee SI, Saini S, Little BP, Succi MD. Imaging Volume Trends and Recovery During the COVID-19 Pandemic: A Comparative Analysis Between a Large Urban Academic Hospital and Its Affiliated Imaging Centers. Acad Radiol. 2020 10; 27(10):1353-1362. PMID: 32830030.
    Citations: 2     Fields:    Translation:HumansCellsPHPublic Health
  14. Whorms DS, Narayan AK, Pourvaziri A, Miles RC, Glover M, Herrington J, Saini S, Brink JA, Flores EJ. Analysis of the Effects of a Patient-Centered Rideshare Program on Missed Appointments and Timeliness for MRI Appointments at an Academic Medical Center. J Am Coll Radiol. 2021 Feb; 18(2):240-247. PMID: 32791235.
    Citations:    Fields:    
  15. Joseph NP, Reid NJ, Som A, Li MD, Hyle EP, Dugdale CM, Lang M, Betancourt JR, Deng F, Mendoza DP, Little BP, Narayan AK, Flores EJ. Racial and Ethnic Disparities in Disease Severity on Admission Chest Radiographs among Patients Admitted with Confirmed Coronavirus Disease 2019: A Retrospective Cohort Study. Radiology. 2020 12; 297(3):E303-E312. PMID: 32673191.
    Citations: 4     Fields:    Translation:HumansCellsPHPublic Health
  16. Lang M, Som A, Mendoza DP, Flores EJ, Li MD, Shepard JO, Little BP. Detection of Unsuspected Coronavirus Disease 2019 Cases by Computed Tomography and Retrospective Implementation of the Radiological Society of North America/Society of Thoracic Radiology/American College of Radiology Consensus Guidelines. J Thorac Imaging. 2020 Jun 17. PMID: 32558725.
    Citations: 3     Fields:    
  17. Lang M, Som A, Mendoza DP, Flores EJ, Reid N, Carey D, Li MD, Witkin A, Rodriguez-Lopez JM, Shepard JO, Little BP. Hypoxaemia related to COVID-19: vascular and perfusion abnormalities on dual-energy CT. Lancet Infect Dis. 2020 12; 20(12):1365-1366. PMID: 32359410.
    Citations: 81     Fields:    Translation:Humans
  18. Febbo J, Little B, Fischl-Lanzoni N, Narayan AK, Tiersma KM, Glover M, Shepard JO, Flores EJ. Analysis of Out-of-Pocket Cost of Lung Cancer Screening for Uninsured Patients Among ACR-Accredited Imaging Centers. J Am Coll Radiol. 2020 Sep; 17(9):1108-1115. PMID: 32278848.
    Citations: 1     Fields:    
  19. Narayan AK, Pourvaziri A, Lopez DB, Miles RC, Kambadakone A, Flores EJ. Using CT Encounters to Improve Colorectal Cancer Screening Utilization: Cross-Sectional Survey Results From the National Health Interview Survey. Curr Probl Diagn Radiol. 2021 May-Jun; 50(3):332-336. PMID: 32249019.
    Citations:    Fields:    
  20. Wang GX, Narayan AK, Park ER, Lehman CD, Gorenstein JT, Flores EJ. Screening Mammography Visits as Opportunities to Engage Smokers With Tobacco Cessation Services and Lung Cancer Screening. J Am Coll Radiol. 2020 May; 17(5):606-612. PMID: 31930983.
    Citations:    Fields:    
  21. Gagne SM, Fintelmann FJ, Flores EJ, McDermott S, Mendoza DP, Petranovic M, Price MC, Stowell JT, Little BP. Evaluation of the Informational Content and Readability of US Lung Cancer Screening Program Websites. JAMA Netw Open. 2020 01 03; 3(1):e1920431. PMID: 32003825.
    Citations: 3     Fields:    Translation:Humans
  22. Lopez D, Miles RC, Flores EJ, Lehman CD, Narayan AK. Breast Cancer Screening in Puerto Rico and Other US Territories: Findings from the 2016 Behavioral Risk Factor Surveillance System Survey. J Health Care Poor Underserved. 2020; 31(1):340-352. PMID: 32037335.
    Citations:    Fields:    
  23. Percac-Lima S, Ashburner JM, Atlas SJ, Rigotti NA, Flores EJ, Kuchukhidze S, Park ER. Barriers to and Interest in Lung Cancer Screening Among Latino and Non-Latino Current and Former Smokers. J Immigr Minor Health. 2019 Dec; 21(6):1313-1324. PMID: 30701427.
    Citations:    Fields:    Translation:Humans
  24. Almeida RR, Marchiori E, Flores EJ. Frequency and Reliability of the Reversed Halo Sign in Patients With Septic Pulmonary Embolism Due to IV Substance Use Disorder. AJR Am J Roentgenol. 2020 01; 214(1):59-67. PMID: 31670590.
    Citations:    Fields:    Translation:Humans
  25. Nisavic M, Flores EJ, Heng M, Kontos NJ, Quijije N. Case 26-2019: A 27-Year-Old Woman with Opioid Use Disorder and Suicidal Ideation. N Engl J Med. 2019 Aug 22; 381(8):763-771. PMID: 31433925.
    Citations:    Fields:    Translation:Humans
  26. Singh R, Sharma A, Sharma A, McDermott S, Homayounieh F, Rastogi S, Flores EJ, Shepard JAO, Gilman MD, Digumarthy SR. Comparison of image quality and radiation doses between rapid kV-switching and dual-source DECT techniques in the chest. Eur J Radiol. 2019 Oct; 119:108639. PMID: 31442929.
    Citations: 5     Fields:    Translation:Humans
  27. Irwin KE, Steffens EB, Yoon Y, Flores EJ, Knight HP, Pirl WF, Freudenreich O, Henderson DC, Park ER. Lung Cancer Screening Eligibility, Risk Perceptions, and Clinician Delivery of Tobacco Cessation Among Patients With Schizophrenia. Psychiatr Serv. 2019 10 01; 70(10):927-934. PMID: 31357921.
    Citations: 1     Fields:    Translation:Humans
  28. Almeida RR, Glover M, Mercaldo SF, López DB, Tso DK, Raja AS, Lev MH, Flores EJ. Temporal Trends in Imaging Utilization for Suspected Substance Use Disorder in an Academic Emergency Radiology Department. J Am Coll Radiol. 2019 Oct; 16(10):1440-1446. PMID: 31092351.
    Citations:    Fields:    Translation:Humans
  29. López DB, Flores EJ, Miles RC, Wang GX, Glover M, Shepard JO, Lehman CD, Narayan AK. Assessing Eligibility for Lung Cancer Screening Among Women Undergoing Screening Mammography: Cross-Sectional Survey Results From the National Health Interview Survey. J Am Coll Radiol. 2019 Oct; 16(10):1433-1439. PMID: 31092347.
    Citations:    Fields:    Translation:Humans
  30. Tso DK, Almeida RR, Prabhakar AM, Singh AK, Raja AS, Flores EJ. Accuracy and timeliness of an abbreviated emergency department MRCP protocol for choledocholithiasis. Emerg Radiol. 2019 Aug; 26(4):427-432. PMID: 31030393.
    Citations:    Fields:    Translation:Humans
  31. Betancourt JR, Tan-McGrory A, Flores E, López D. Racial and Ethnic Disparities in Radiology: A Call to Action. J Am Coll Radiol. 2019 Apr; 16(4 Pt B):547-553. PMID: 30947886.
    Citations:    Fields:    Translation:Humans
  32. Flores EJ, Park ER, Irwin KE. Improving Lung Cancer Screening Access for Individuals With Serious Mental Illness. J Am Coll Radiol. 2019 Apr; 16(4 Pt B):596-600. PMID: 30947893.
    Citations: 3     Fields:    Translation:Humans
  33. Narayan AK, Lopez DB, Miles RC, Dontchos B, Flores EJ, Glover M, Lehman CD. Implementation of an Intimate Partner Violence Screening Assessment and Referral System in an Academic Women's Imaging Department. J Am Coll Radiol. 2019 Apr; 16(4 Pt B):631-634. PMID: 30947898.
    Citations: 1     Fields:    Translation:HumansPHPublic Health
  34. Carlos RC, Flores EJ. Health Equity. J Am Coll Radiol. 2019 04; 16(4 Pt B):539-541. PMID: 30947884.
    Citations:    Fields:    Translation:Humans
  35. Berland LL, Monticciolo DL, Flores EJ, Malak SF, Yee J, Dyer DS. Relationships Between Health Care Disparities and Coverage Policies for Breast, Colon, and Lung Cancer Screening. J Am Coll Radiol. 2019 Apr; 16(4 Pt B):580-585. PMID: 30947890.
    Citations: 1     Fields:    Translation:Humans
  36. Lopez D, Pratt-Chapman ML, Rohan EA, Sheldon LK, Basen-Engquist K, Kline R, Shulman LN, Flores EJ. Establishing effective patient navigation programs in oncology. Support Care Cancer. 2019 Jun; 27(6):1985-1996. PMID: 30887125.
    Citations: 3     Fields:    Translation:Humans
  37. Stowell JT, Grimstad FW, Kirkpatrick DL, Brown LR, Flores EJ. Serving the Needs of Transgender and Gender-Diverse Persons in Radiology. J Am Coll Radiol. 2019 04; 16(4 Pt A):533-535. PMID: 30819454.
    Citations: 1     Fields:    Translation:Humans
  38. Flores EJ, López D, Miles RC, Glover M, Lehman CD, Harvey HB, Narayan AK. Impact of Primary Care Physician Interaction on Longitudinal Adherence to Screening Mammography Across Different Racial/Ethnic Groups. J Am Coll Radiol. 2019 Jul; 16(7):908-914. PMID: 30737162.
    Citations: 2     Fields:    Translation:Humans
  39. Flores EJ, Narayan AK. The Role of Radiology in Intimate Partner Violence. Radiology. 2019 Apr; 291(1):70-71. PMID: 30735471.
    Citations:    Fields:    
  40. Wang GX, Baggett TP, Pandharipande PV, Park ER, Percac-Lima S, Shepard JO, Fintelmann FJ, Flores EJ. Barriers to Lung Cancer Screening Engagement from the Patient and Provider Perspective. Radiology. 2019 02; 290(2):278-287. PMID: 30620258.
    Citations: 9     Fields:    Translation:Humans
  41. Miles RC, Narayan AK, Lopez DB, Lehman CD, Harvey HB, Mishra V, Glover M, Flores EJ. Chronic Medical Illness as a Risk Factor for Poor Mammography Screening Adherence. J Womens Health (Larchmt). 2019 10; 28(10):1378-1383. PMID: 30565970.
    Citations: 2     Fields:    Translation:HumansPHPublic Health
  42. Canellas R, Digumarthy S, Tabari A, Otrakji A, McDermott S, Flores EJ, Kalra M. Radiation dose reduction in chest dual-energy computed tomography: effect on image quality and diagnostic information. Radiol Bras. 2018 Nov-Dec; 51(6):377-384. PMID: 30559555.
    Citations: 1     
  43. Narayan AK, Flores EJ, Harvey HB, Lehman CD. Population-Based Health Engagement Opportunities Through Breast Imaging: A Population-Based Cross-Sectional Survey. J Am Coll Radiol. 2018 Oct; 15(10):1401-1407. PMID: 30061047.
    Citations:    Fields:    Translation:HumansPHPublic Health
  44. Almeida RR, Mansouri M, Tso DK, Johnson AH, Lev MH, Singh AK, Flores EJ. The added value of cross-sectional imaging in the detection of additional radiographically occult fractures in the setting of a Chopart fracture. Emerg Radiol. 2018 Oct; 25(5):513-520. PMID: 29876712.
    Citations:    Fields:    Translation:Humans
  45. Neal CD, Weaver DT, Raphel TJ, Lietz AP, Flores EJ, Percac-Lima S, Knudsen AB, Pandharipande PV. Patient Navigation to Improve Cancer Screening in Underserved Populations: Reported Experiences, Opportunities, and Challenges. J Am Coll Radiol. 2018 Nov; 15(11):1565-1572. PMID: 29685346.
    Citations: 1     Fields:    Translation:HumansPHPublic Health
  46. Daye D, Carrodeguas E, Glover M, Guerrier CE, Harvey HB, Flores EJ. Impact of Delayed Time to Advanced Imaging on Missed Appointments Across Different Demographic and Socioeconomic Factors. J Am Coll Radiol. 2018 May; 15(5):713-720. PMID: 29503152.
    Citations: 1     Fields:    Translation:Humans
  47. Shepard JO, Flores EJ, Abbott GF. Imaging of the trachea. Ann Cardiothorac Surg. 2018 Mar; 7(2):197-209. PMID: 29707497.
    Citations:    
  48. Hossain R, Almeida RR, Natcheva H, Hedgire S, Ghoshhajra B, Shepard JA, Fintelmann FJ, Flores EJ. Complications of Intravenous Substance Use Disorders (SUDs): A Multimodality Pictorial Essay for Cardiothoracic Radiologists. J Thorac Imaging. 2018 Mar; 33(2):W1-W12. PMID: 29257030.
    Citations:    Fields:    Translation:Humans
  49. Jessup DL, Glover Iv M, Daye D, Banzi L, Jones P, Choy G, Shepard JO, Flores EJ. Implementation of Digital Awareness Strategies to Engage Patients and Providers in a Lung Cancer Screening Program: Retrospective Study. J Med Internet Res. 2018 02 15; 20(2):e52. PMID: 29449199.
    Citations: 9     Fields:    Translation:Humans
  50. McDermott S, Otrakji A, Flores EJ, Kalra MK, Shepard JO, Digumarthy SR. Should Dual-Energy Computed Tomography Pulmonary Angiography Replace Single-Energy Computed Tomography Pulmonary Angiography in Pregnant and Postpartum Patients? J Comput Assist Tomogr. 2018 Jan/Feb; 42(1):25-32. PMID: 28786905.
    Citations: 1     Fields:    Translation:Humans
  51. Raja AS, Miller ES, Flores EJ, Wakeman SE, Eng G. Case 37-2017. A 36-Year-Old Man with Unintentional Opioid Overdose. N Engl J Med. 2017 Nov 30; 377(22):2181-2188. PMID: 29171813.
    Citations:    Fields:    Translation:Humans
  52. Bhattacharyya RP, Flores EJ, Azar MM. Case 30-2017. A 65-Year-Old Woman with Altered Mental Status, Bacteremia, and Acute Liver Failure. N Engl J Med. 2017 Sep 28; 377(13):1274-1282. PMID: 28953442.
    Citations:    Fields:    Translation:HumansCells
  53. LaCasce AS, Flores EJ, Goldstein RH, Sohani AR. Case 25-2017. N Engl J Med. 2017 Aug 17; 377(7):677-688. PMID: 28813220.
    Citations:    Fields:    Translation:HumansCells
  54. Glover M, Daye D, Khalilzadeh O, Pianykh O, Rosenthal DI, Brink JA, Flores EJ. Socioeconomic and Demographic Predictors of Missed Opportunities to Provide Advanced Imaging Services. J Am Coll Radiol. 2017 Nov; 14(11):1403-1411. PMID: 28676305.
    Citations: 5     Fields:    Translation:Humans
  55. Harvey HB, Liu C, Ai J, Jaworsky C, Guerrier CE, Flores E, Pianykh O. Predicting No-Shows in Radiology Using Regression Modeling of Data Available in the Electronic Medical Record. J Am Coll Radiol. 2017 Oct; 14(10):1303-1309. PMID: 28673777.
    Citations: 6     Fields:    Translation:Humans
  56. Padole A, Digumarthy S, Flores E, Madan R, Mishra S, Sharma A, Kalra MK. Assessment of chest CT at CTDIvol less than 1?mGy with iterative reconstruction techniques. Br J Radiol. 2017 Mar; 90(1071):20160625. PMID: 28055250.
    Citations: 4     Fields:    Translation:Humans
  57. Gunn AJ, Tuttle MC, Flores EJ, Mangano MD, Bennett SE, Sahani DV, Choy G, Boland GW. Differing Interpretations of Report Terminology Between Primary Care Physicians and Radiologists. J Am Coll Radiol. 2016 Dec; 13(12 Pt A):1525-1529.e1. PMID: 27595196.
    Citations: 2     Fields:    Translation:Humans
  58. McInnis MC, Flores EJ, Shepard JA, Ackman JB. Pitfalls in the Imaging and Interpretation of Benign Thymic Lesions: How Thymic MRI Can Help. AJR Am J Roentgenol. 2016 Jan; 206(1):W1-8. PMID: 26700357.
    Citations: 2     Fields:    Translation:Humans
  59. Otrakji A, Digumarthy SR, Lo Gullo R, Flores EJ, Shepard JA, Kalra MK. Dual-Energy CT: Spectrum of Thoracic Abnormalities. Radiographics. 2016 Jan-Feb; 36(1):38-52. PMID: 26761530.
    Citations: 16     Fields:    Translation:Humans
  60. Fintelmann FJ, Bernheim A, Digumarthy SR, Lennes IT, Kalra MK, Gilman MD, Sharma A, Sharma A, Flores EJ, Muse VV, Shepard JA. The 10 Pillars of Lung Cancer Screening: Rationale and Logistics of a Lung Cancer Screening Program. Radiographics. 2015 Nov-Dec; 35(7):1893-908. PMID: 26495797.
    Citations: 22     Fields:    Translation:Humans
  61. Kamdar MM, Doyle KP, Sequist LV, Rinehart TJ, Maytal G, Flores EJ, Mino-Kenudson M. Case records of the Massachusetts General Hospital. Case 17-2015. A 44-year-old woman with intractable pain due to metastatic lung cancer. N Engl J Med. 2015 May 28; 372(22):2137-47. PMID: 26017825.
    Citations:    Fields:    Translation:Humans
  62. Aran S, Daftari Besheli L, Besheli LD, Karcaaltincaba M, Gupta R, Flores EJ, Abujudeh HH. Applications of dual-energy CT in emergency radiology. AJR Am J Roentgenol. 2014 Apr; 202(4):W314-24. PMID: 24660729.
    Citations: 10     Fields:    Translation:Humans
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Funded by the NIH National Center for Advancing Translational Sciences through its Clinical and Translational Science Awards Program, grant number UL1TR002541.