2025
Trends in Psychiatrist-Led Care for Medicare Part B Enrollees
Havlik J, Wahid S, Priest K, Ososanya L, Igunbor M, Humphreys K. Trends in Psychiatrist-Led Care for Medicare Part B Enrollees. JAMA Network Open 2025, 8: e2458160. PMID: 39913135, PMCID: PMC11803478, DOI: 10.1001/jamanetworkopen.2024.58160.Peer-Reviewed Original ResearchConceptsMedicare Part B enrolleesMedicare Part BPsychiatric careCenters for Medicare & Medicaid ServicesIncidence of mental illnessProfessional servicesPart BCross-sectional studyDistrict of ColumbiaKaiser Family FoundationMental illnessMedicaid ServicesMain OutcomesOlder adultsPhysical disabilityWorkforce growthVulnerable populationsMedicareTraditional MedicareEquitable accessPrimary outcomeCareStudy populationEnrolleesPsychiatristsSupplemental Nutrition Assistance Program Work Requirements and Safety-Net Program Participation
Ndumele C, Factor H, Lavallee M, Lollo A, Wallace J. Supplemental Nutrition Assistance Program Work Requirements and Safety-Net Program Participation. JAMA Internal Medicine 2025, 185: 92-100. PMID: 39495527, PMCID: PMC11536301, DOI: 10.1001/jamainternmed.2024.5932.Peer-Reviewed Original ResearchSupplemental Nutrition Assistance ProgramSNAP work requirementsAble-bodied adultsChronic conditionsCharacteristics of individualsLow-incomeCohort studyMedicaid coverageNutrition Assistance ProgramSocioeconomic characteristics of individualsProportion of enrolleesChronic illnessMain OutcomesProgram enrollmentMedicaid enrolleesYounger beneficiariesSocioeconomic characteristicsMedicaidStatistically significant changesTarget populationEnrolleesAssistance programsCaregiversSafety-net programsBeneficiaries
2024
Adverse selection and network design under regulated plan prices: Evidence from Medicaid
Kreider A, Layton T, Shepard M, Wallace J. Adverse selection and network design under regulated plan prices: Evidence from Medicaid. Journal Of Health Economics 2024, 97: 102901. PMID: 38944945, PMCID: PMC11392643, DOI: 10.1016/j.jhealeco.2024.102901.Peer-Reviewed Original ResearchPatients’ Reasons for Using Out-of-Network Mental and General Medical Health Providers
Busch S, Kyanko K. Patients’ Reasons for Using Out-of-Network Mental and General Medical Health Providers. Psychiatric Services 2024, 75: 812-816. PMID: 38444357, DOI: 10.1176/appi.ps.20230212.Peer-Reviewed Original ResearchOut-of-network careMedical health providersOut-of-networkHealth providersOut-of-network providersPatients' reasonsMental health careHealth care providersIn-network providersCare providersHealth careProvider directoriesMental healthNational Internet surveyPlan enrolleesCultural competenceProvidersCarePatientsHigh qualityEnrolleesHealthParticipantsMost-cited reasonReasons
2023
National trends in emergency conditions through the Omicron COVID‐19 wave in commercial and Medicare Advantage enrollees
Stevens M, Melnick E, Savitz S, Jeffery M, Nath B, Janke A. National trends in emergency conditions through the Omicron COVID‐19 wave in commercial and Medicare Advantage enrollees. Journal Of The American College Of Emergency Physicians Open 2023, 4: e13023. PMID: 37576118, PMCID: PMC10423035, DOI: 10.1002/emp2.13023.Peer-Reviewed Original ResearchEmergency care-sensitive conditionsMedicare Advantage enrolleesED visitsVisit ratesPulmonary embolismPandemic waveWave 2Acute cardiovascular conditionsCause ED visitsMyocardial infarction rateED visit ratesEmergency department visitsPre-pandemic ratesCross-sectional analysisPre-pandemic periodInfarction rateCOVID-19 waveDepartment visitsSevere arrhythmiasFemale enrolleesMyocardial infarctionCardiovascular conditionsPercent changeSensitive conditionsEnrollees
2022
898-P: Impact of Switching to a High-Deductible Health Plan on Patients’ Out-of-Pocket Expenditures for Glucose-Lowering Drugs
JIANG D, HERRIN J, VAN HOUTEN H, MCCOY R. 898-P: Impact of Switching to a High-Deductible Health Plan on Patients’ Out-of-Pocket Expenditures for Glucose-Lowering Drugs. Diabetes 2022, 71 DOI: 10.2337/db22-898-p.Peer-Reviewed Original ResearchHigh-deductible health plansGlucose-lowering drugsHDHP enrolleesOOP expensesHealth outcomesPocket expenditureHealth plansBurden of treatmentCostly health conditionsPoor health outcomesDeductible Health PlansGlycemic managementHigh-value careKidney diseaseDiabetes managementOOP costsValue careOOP expenditurePrescription drugsDiabetesHealth conditionsDirect costsDrugsEnrolleesHealth insuranceResidual Confounding in Health Plan Performance Assessments: Evidence From Randomization in Medicaid.
Wallace J, McWilliams JM, Lollo A, Eaton J, Ndumele CD. Residual Confounding in Health Plan Performance Assessments: Evidence From Randomization in Medicaid. Annals Of Internal Medicine 2022, 175: 314-324. PMID: 34978862, DOI: 10.7326/m21-0881.Peer-Reviewed Original ResearchConceptsResidual confoundingObservational populationRandomized populationCare useMedicaid populationRisk adjustmentAvoidable emergency department visitsState Medicaid populationDental care usePrimary care useEmergency department visitsHealth plan performancePlan performancePatient characteristicsDepartment visitsBaseline differencesPatient differencesArnold VenturesFurther adjustmentEnrollee characteristicsEnrolleesTotal spendingProvider effectsConfoundingMean spending
2019
Graded chronic pain scale revised: mild, bothersome, and high-impact chronic pain.
Von Korff M, DeBar LL, Krebs EE, Kerns RD, Deyo RA, Keefe FJ. Graded chronic pain scale revised: mild, bothersome, and high-impact chronic pain. Pain 2019, 161: 651-661. PMID: 31764390, PMCID: PMC7097879, DOI: 10.1097/j.pain.0000000000001758.Peer-Reviewed Original ResearchConceptsHigh-impact chronic painMild chronic painChronic Pain ScaleGraded Chronic Pain ScaleChronic painPain Scale-RevisedPain scaleLong-term opioid therapySubstantial activity limitationsHealth status indicatorsOpioid therapyAdult enrolleesActivity limitationsPainPain metricsHealth plansNonsignificant differenceStatus indicatorsPersonsValid methodTherapyPrevalenceBothersomeEnrolleesOutdoor temperature and survival benefit of empiric potassium in users of furosemide in US Medicaid enrollees: a cohort study
Nam Y, Bilker W, Leonard C, Bell M, Hennessy S. Outdoor temperature and survival benefit of empiric potassium in users of furosemide in US Medicaid enrollees: a cohort study. BMJ Open 2019, 9: e023809. PMID: 30777859, PMCID: PMC6398730, DOI: 10.1136/bmjopen-2018-023809.Peer-Reviewed Original ResearchConceptsAssociated with elevated all-cause mortalityMedicaid enrolleesElevated all-cause mortalitySurvival benefitYears prior to cohort entryAll-Cause MortalityMedicare claimsCohort entryFurosemide prescriptionPropensity score matched cohortMedicaid claimsOutpatient settingScore-matched cohortNon-usersEnrolleesMedicaidStudy objectiveUS statesMortality rateMatched CohortPotassium depletionFurosemideMortalityCohortHeat-induced sweatingDifferences in Hospitalizations Between Fee-for-Service and Medicare Advantage Beneficiaries
Ndumele CD, Elliott MN, Haviland AM, Burkhart Q, Orr N, Gaillot S, Cleary PD. Differences in Hospitalizations Between Fee-for-Service and Medicare Advantage Beneficiaries. Medical Care 2019, 57: 8-12. PMID: 30339575, DOI: 10.1097/mlr.0000000000001000.Peer-Reviewed Original ResearchConceptsFFS coverageHospitalization ratesMedicare AdvantageMultivariable logistic regression modelMA enrolleesRate of hospitalizationLower hospitalization ratesPatterns of careMedicare Advantage beneficiariesLogistic regression modelsMedicare Consumer AssessmentHospital admissionRetrospective studyHealth characteristicsService useHospitalizationHealth statusHealthcare providersEnrollee demographicsConsumer AssessmentEnrolleesSystem surveySignificant age differencesMA enrollmentMA respondents
2018
Blind Spots: Spatial analytics can identify nonrandom geographic variation in first episode psychosis program enrollments
Mathis WS, Woods S, Srihari V. Blind Spots: Spatial analytics can identify nonrandom geographic variation in first episode psychosis program enrollments. Early Intervention In Psychiatry 2018, 12: 1229-1234. PMID: 29927083, DOI: 10.1111/eip.12681.Peer-Reviewed Original ResearchConceptsPrimary care providersCare providersControl populationFirst episode psychosis programProgram enrollmentProgram catchment areaProvider Enumeration SystemPsychosis programSpecialty clinicRecruitment interventionsRisk populationsProgram enrolleesPositive findingsUS Census dataStatistical significanceHome addressEnrollmentEnrolleesProgram participantsPreliminary studyPopulationEnumeration systemFindingsProvidersClinic
2016
Public Knowledge and Attitude toward Essential Tremor: A Questionnaire Survey
Shalaby S, Indes J, Keung B, Gottschalk CH, Machado D, Patel A, Robakis D, Louis ED. Public Knowledge and Attitude toward Essential Tremor: A Questionnaire Survey. Frontiers In Neurology 2016, 7: 60. PMID: 27148160, PMCID: PMC4840213, DOI: 10.3389/fneur.2016.00060.Peer-Reviewed Original ResearchEssential tremorPD patientsDisease patientsFeatures of ETGeneral neurology clinicParkinson's disease patientsConsecutive enrolleesDisease clinicNeurology clinicMain symptomsBrain surgeryPatientsSame diseaseOdd causeEnrolleesTremorClinicPublic knowledgeDiseasePublic awarenessLack of knowledgeGreater awarenessMedicare Prescription Drug Plan Enrollees Report Less Positive Experiences Than Their Medicare Advantage Counterparts
Elliott MN, Landon BE, Zaslavsky AM, Edwards C, Orr N, Beckett MK, Mallett J, Cleary PD. Medicare Prescription Drug Plan Enrollees Report Less Positive Experiences Than Their Medicare Advantage Counterparts. Health Affairs 2016, 35: 456-463. PMID: 26953300, DOI: 10.1377/hlthaff.2015.0816.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overDatabases, FactualDrug PrescriptionsFemaleHealth ExpendituresHumansInsurance CoverageInsurance, Pharmaceutical ServicesMaleManaged Care ProgramsMedicare Part CMedicare Part DPatient SatisfactionRetrospective StudiesSex FactorsSurveys and QuestionnairesUnited StatesConceptsPrescription drug plansPrescription drug coverageDrug plansMedicare beneficiariesDrug coverageCommunity-dwelling Medicare beneficiariesOverall health care costsMedicare Advantage health plansMA plansHealth care costsPercent of beneficiariesAffordable Care ActQuality bonus paymentsPlan enrolleesMedicare prescription drug coverageCare costsHealth plansCare ActPositive experiencesAge sixtyBeneficiary assessmentMedicationsMA counterpartsBeneficiariesEnrollees
2015
Ambient Coarse Particulate Matter and Hospital Admissions in the Medicare Cohort Air Pollution Study, 1999–2010
Powell H, Krall JR, Wang Y, Bell ML, Peng RD. Ambient Coarse Particulate Matter and Hospital Admissions in the Medicare Cohort Air Pollution Study, 1999–2010. Environmental Health Perspectives 2015, 123: 1152-1158. PMID: 25872223, PMCID: PMC4629736, DOI: 10.1289/ehp.1408720.Peer-Reviewed Original ResearchConceptsYears of ageEmergency hospitalizationHospital admissionM3 increaseMedicare enrolleesRespiratory-related hospitalizationsTwo-stage Bayesian hierarchical modelSignificant increaseShort-term associationsCardiovascular hospitalizationMorbidity outcomesCardiovascular diseaseRespiratory diseaseHospitalizationShort-term exposureAmbient Coarse Particulate MatterPoisson log-linear regression modelsLog-linear regression modelCoarse particulate matterAdmissionAmbient coarseAssociationNumber of studiesDiseaseEnrollees
2014
Recruiting Post-Doctoral Fellows into Global Health Research: Selecting NIH Fogarty International Clinical Research Fellows
Heimburger DC, Warner TL, Carothers CL, Blevins M, Thomas Y, Gardner P, Primack A, Vermund SH. Recruiting Post-Doctoral Fellows into Global Health Research: Selecting NIH Fogarty International Clinical Research Fellows. American Journal Of Tropical Medicine And Hygiene 2014, 91: 219-224. PMID: 24865678, PMCID: PMC4125240, DOI: 10.4269/ajtmh.13-0741.Peer-Reviewed Original ResearchConceptsDisease ProjectClinical researchCharacteristics of enrolleesInternational clinical researchHealth professionalsClinical fellowshipNIH institutesNational InstituteHealth researchGlobal health researchMedical degreeInternational fellowsApplicant competitivenessEnrolleesFellowsResearch trainingWomenThe effects of federal parity on substance use disorder treatment.
Busch SH, Epstein AJ, Harhay MO, Fiellin DA, Un H, Leader D, Barry CL. The effects of federal parity on substance use disorder treatment. The American Journal Of Managed Care 2014, 20: 76-82. PMID: 24512166, PMCID: PMC3987861.Peer-Reviewed Original ResearchConceptsSubstance use disorder treatmentUse disorder treatmentSubstance use disorder servicesFederal parityDisorder treatmentPlan enrolleesDisorder servicesHealth plansHealth plan spendingPete Domenici Mental Health ParityGeneral medical servicesProportion of enrolleesAddiction Equity ActFederal parity lawMental Health ParityManagement of careState parity lawsParity lawsTreatment initiationPlan spendingPrivate insurance coverageHealth ParityTreatment engagementSelf-insured health plansEnrollees
2009
Exposure to Low-Dose Ionizing Radiation from Medical Imaging Procedures
Fazel R, Krumholz HM, Wang Y, Ross JS, Chen J, Ting HH, Shah ND, Nasir K, Einstein AJ, Nallamothu BK. Exposure to Low-Dose Ionizing Radiation from Medical Imaging Procedures. New England Journal Of Medicine 2009, 361: 849-857. PMID: 19710483, PMCID: PMC3707303, DOI: 10.1056/nejmoa0901249.Peer-Reviewed Original ResearchConceptsCumulative effective dosesCumulative effective doseEffective dosesEffective doseMean cumulative effective doseImaging proceduresLow-dose ionizing radiationPopulation-based ratesMedian effective doseOutpatient settingGeneral populationHigh dosesUtilization dataDosesEnrolleesStudy periodRadiation exposureNuclear imagingDoseAnnual effective dosesMedical imaging proceduresUnited StatesExposureHealth care marketYears
2002
Development of an Episode of Illness Classification for Population Management Using Pharmacy Data
Goldfield N, Eisenhandler J, Gay J, McCullough E, Bao M, Neff J, Muldoon J, Hughes J, Mills R. Development of an Episode of Illness Classification for Population Management Using Pharmacy Data. Population Health Management 2002, 5: 175-183. DOI: 10.1089/109350702760301466.Peer-Reviewed Original ResearchIllness Classification SystemEpisodes of illnessPharmaceutical dataCombination of medicationsPopulation of patientsDuration of treatmentAggressive case managementCase-mix systemIndividual medicationsClaims databasePharmacy dataIllness classificationCase managementClassification systemDiseaseSpecific diseasesMedicationsEpisodesIllnessParticular diseasePatientsOutpatientsInpatientsEnrolleesSeverity
2001
Racial Disparity in Influenza Vaccination: Does Managed Care Narrow the Gap Between African Americans and Whites?
Schneider E, Cleary P, Zaslavsky A, Epstein A. Racial Disparity in Influenza Vaccination: Does Managed Care Narrow the Gap Between African Americans and Whites? JAMA 2001, 286: 1455-1460. PMID: 11572737, DOI: 10.1001/jama.286.12.1455.Peer-Reviewed Original ResearchConceptsInfluenza vaccinationRacial disparitiesService insuranceCare enrolleesAfrican AmericansMedicare Current Beneficiary SurveyWhite Medicare beneficiariesSubstantial racial disparitiesUS cohortPreventive servicesMedicare beneficiariesPercentage of respondentsVaccinationHealth servicesBeneficiary SurveyPercentage point differenceCareHigh rateInsurance groupsEnrolleesDisparitiesWhitesInsuranceAmericansPoint difference
2000
Providing Consumers with Information About the Quality of Health Plans: The Consumer Assessment of Health Plans Demonstration in Washington State
Guadagnoli E, Epstein A, Zaslavsky A, Shaul J, Veroff D, Fowler F, Cleary P. Providing Consumers with Information About the Quality of Health Plans: The Consumer Assessment of Health Plans Demonstration in Washington State. The Joint Commission Journal On Quality And Patient Safety 2000, 26: 410-420. PMID: 10897458, DOI: 10.1016/s1070-3241(00)26034-3.Peer-Reviewed Original Research
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