TY - JOUR
AU - E. T. Roberts
AU - E. Macneal
AU - K. J. Johnston
AU - J. F. Figueroa
A1 - 
AB - Medicare and Medicaid are separate programs that together cover 13 million low-income older adults and people with disabilities, known as dual-eligible individuals. Concern about a lack of coordination across Medicare and Medicaid has prompted the development of Integrated Care Programs (ICPs). Although the primary goal of ICPs is to coordinate financing and care across Medicare and Medicaid, ICPs may also influence whether low-income individuals obtain or keep Medicaid. We evaluated whether the rollout of Medicare-Medicaid Plans (MMPs)-one of the largest ICPs-was associated with changes in Medicaid take-up and retention among Medicare beneficiaries residing in high-poverty zip codes. Using a stacked difference-in-differences design and variation in MMP rollouts across nine states, we found no evidence that MMPs increased monthly or continuous Medicaid enrollment in this population. These findings highlight the need for focused policies to address Medicaid enrollment gaps among low-income Medicare beneficiaries, which could complement broader integration efforts.
AD - University of Pennsylvania, Philadelphia, USA.; Washington University in St. Louis, MO, USA.; Harvard T.H. Chan School of Public Health, Boston, MA, USA.; Brigham and Women's Hospital, Boston, MA, USA.
AN - 41036777
BT - Med Care Res Rev
C5 - Financing & Sustainability; Healthcare Disparities
CP - 1
DA - Feb
DO - 10.1177/10775587251372267
DP - NLM
ET - 20251002
IS - 1
JF - Med Care Res Rev
LA - eng
N2 - Medicare and Medicaid are separate programs that together cover 13 million low-income older adults and people with disabilities, known as dual-eligible individuals. Concern about a lack of coordination across Medicare and Medicaid has prompted the development of Integrated Care Programs (ICPs). Although the primary goal of ICPs is to coordinate financing and care across Medicare and Medicaid, ICPs may also influence whether low-income individuals obtain or keep Medicaid. We evaluated whether the rollout of Medicare-Medicaid Plans (MMPs)-one of the largest ICPs-was associated with changes in Medicaid take-up and retention among Medicare beneficiaries residing in high-poverty zip codes. Using a stacked difference-in-differences design and variation in MMP rollouts across nine states, we found no evidence that MMPs increased monthly or continuous Medicaid enrollment in this population. These findings highlight the need for focused policies to address Medicaid enrollment gaps among low-income Medicare beneficiaries, which could complement broader integration efforts.
PY - 2026
SN - 1077-5587 (Print); 1077-5587
SP - 20
EP - 32+
ST - Effects of Dual-Eligible Integrated Care Plans on Medicaid Enrollment and Retention: Evidence From the Implementation of Medicare-Medicaid Plans
T1 - Effects of Dual-Eligible Integrated Care Plans on Medicaid Enrollment and Retention: Evidence From the Implementation of Medicare-Medicaid Plans
T2 - Med Care Res Rev
TI - Effects of Dual-Eligible Integrated Care Plans on Medicaid Enrollment and Retention: Evidence From the Implementation of Medicare-Medicaid Plans
U1 - Financing & Sustainability; Healthcare Disparities
U3 - 10.1177/10775587251372267
VL - 83
VO - 1077-5587 (Print); 1077-5587
Y1 - 2026
ER -