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Importance: Poverty is associated with greater barriers to health care and worse health outcomes, but it remains unclear whether income support can improve health., Objective: To examine the effect of cash benefits on health care utilization and health., Design, Setting, and Participants: The City of Chelsea, Massachusetts, a low-income community near Boston, randomly assigned individuals by lottery to receive cash benefits. Participants' medical records were linked across multiple health systems. Outcomes were assessed during the intervention period from November 24, 2020, to August 31, 2021., Intervention: Cash benefits via debit card of up to $400 per month for 9 months., Main Outcomes and Measures: The primary outcome was emergency department visits. Secondary outcomes included specific types of emergency department visits, outpatient use overall and by specialty, COVID-19 vaccination, and biomarkers such as cholesterol levels., Results: Among 2880 individuals who applied for the lottery, mean age was 45.1 years and 77% were female. The 1746 participants randomized to receive the cash benefits had significantly fewer emergency department visits compared with the control group (217.1 vs 317.5 emergency department visits per 1000 persons; adjusted difference, -87.0 per 1000 persons [95% CI, -160.2 to -13.8]). This included reductions in emergency department visits related to behavioral health (-21.6 visits per 1000 persons [95% CI, -40.2 to -3.1]) and substance use (-12.8 visits per 1000 persons [95% CI, -25.0 to -0.6]) as well as those that resulted in a hospitalization (-27.3 visits per 1000 persons [95% CI, -53.6 to -1.1]). The cash benefit had no statistically significant effect on total outpatient visits (424.3 visits per 1000 persons [95% CI, -118.6 to 967.2]), visits to primary care (-90.4 visits per 1000 persons [95% CI, -308.1 to 127.2]), or outpatient behavioral health (83.5 visits per 1000 persons [95% CI, -182.9 to 349.9]). Outpatient visits to other subspecialties were higher in the cash benefit group compared with the control group (303.1 visits per 1000 persons [95% CI, 32.9 to 573.2]), particularly for individuals without a car. The cash benefit had no statistically significant effect on COVID-19 vaccination, blood pressure, body weight, glycated hemoglobin, or cholesterol level., Conclusions and Relevance: In this randomized study, individuals who received a cash benefit had significantly fewer emergency department visits, including those related to behavioral health and substance use, fewer admissions to the hospital from the emergency department, and increased use of outpatient subspecialty care. Study results suggest that policies that seek to alleviate poverty by providing income support may have important benefits for health and access to care.

Background: Congress eliminated the individual mandate penalty of the Affordable Care Act (ACA) effective January 1, 2019., Objective: To examine the effects of repealing the ACA mandate penalty on private health insurance coverage and marketplace enrollment by leveraging state-based mandates in Massachusetts and New Jersey., Research Design: We employ synthetic control and difference-in-differences methods to compare insurance and enrollment changes separately in Massachusetts and New Jersey, which had insurance mandates effective in 2019, to other states without such mandates., Subjects: Adults aged 18-64 years with income of 150-300% and above 300% of the Federal Poverty Level who participated in the 2016-2019 American Community Survey (ACS) and adults aged 18-64 enrolled in insurance marketplaces based on state-level data from the 2016-2021 Marketplace Open Enrollment Period Public Use Files (MOEP-PUF)., Measures: Any insurance, individually purchased coverage, and employer-sponsored coverage from the ACS and marketplace enrollment from the MOEP-PUF., Results: Changes in any coverage, individually purchased coverage, and employer-sponsored coverage rates are relatively small (generally in the range of 1-2 percentage points) and statistically nonsignificant in both Massachusetts and New Jersey compared with states without mandates. Furthermore, there is no discernable difference by eligibility for marketplace subsidies based on income level in the ACS data. Similarly, estimates for changes in marketplace enrollment are also small overall and statistically nonsignificant., Conclusion: Private insurance coverage rates and marketplace enrollment for adults 18-64 do not appear to have changed thus far owing to the 2019 repeal of the ACA individual mandate penalty., Competing Interests: The authors declare no conflict of interest., (Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.)

Importance: Young adults historically have had the highest uninsured rates among all age groups. In 2014, in addition to Medicaid expansion for adults with low income (≤133% of the federal poverty level [FPL]) through the Patient Protection and Affordable Care Act, Massachusetts also extended eligibility for children (≤150% FPL) to beneficiaries aged 19 to 20 years., Objective: To examine changes in insurance coverage continuity for Medicaid enrollees who turned age 19 years before and after eligibility policy changes., Design Setting and Participants: This cohort study used data from the Massachusetts All-Payer Claims Database (2012 to 2016) to compare coverage for Medicaid beneficiaries turning age 19 years before and after Medicaid expansion. Monthly coverage was examined for each cohort for 3 years as beneficiaries aged from 18 and 19 years to 19 and 20 years to 20 and 21 years. Analyses were performed between November 1, 2020, and May 12, 2022., Main Outcomes and Measures: In each year, the likelihood of being uninsured or having Medicaid, employer-sponsored insurance, or individual commercial coverage for 3 or more months was examined along with the likelihood of having continuous Medicaid enrollment for 12 or more and 24 or more months. Multivariable linear probability models were used to compare the likelihood of these outcomes for those in the postexpansion vs preexpansion cohorts, adjusting for sex, comorbidity levels, neighborhood socioeconomic status, and neighborhood race and ethnicity., Results: A total of 41 247 young adults turning age 18 to 19 years in the baseline year (20 876 [50.6%] men) were included in the study, with 20 777 in the preexpansion cohort and 20 470 in the postexpansion cohort. Enrollees who turned age 19 years after vs before the Medicaid eligibility expansion were less likely to have 3 or more uninsured months at ages 18 to 19 years (4.4% [n = 891] vs 22.9% [n = 4750]; adjusted difference, -18.4 [95% CI, -19.0 to -17.7] percentage points) and 19 to 20 years (13.2% [n = 2702] vs 35.8% [n = 7447]; adjusted difference, -22.4 [95% CI, -23.2 to -21.6] percentage points) and more likely to have continuous insurance coverage for 12 or more months (94.1% [n = 19 272] vs 63.7% [n = 13 234]; adjusted difference, 30.5 [95% CI, 29.7-31.2] percentage points) or 24 or more months (77.5% [n = 15 868] vs 44.4% [n = 9221]; adjusted difference, 33.0 [95% CI, 32.1-33.9] percentage points). Differences in the likelihood of having 3 or more uninsured months diminished at ages 20 to 21 years, when both groups had access to Medicaid (ie, in calendar years 2014 for the preexpansion cohort and 2016 for the postexpansion cohort)., Conclusions and Relevance: In this cohort study of young adults in Massachusetts, the combination of expanding Medicaid to lower-income adults and increasing the age threshold for child Medicaid eligibility was associated with reduced likelihood of becoming uninsured among Medicaid enrollees entering adulthood., Competing Interests: Conflict of Interest Disclosures: Dr Fung reported receiving grants from the National Institutes of Health (NIH) and Agency for Healthcare Research and Quality (AHRQ) and personal fees from Ginger outside the submitted work. Dr Yang reported receiving grants from AHRQ during the conduct of the study. Dr Hsu reported receiving grants from the NIH and AHRQ during the conduct of the study and personal fees for consulting from Cambridge Health Alliance, AltaMed, Columbia University, University of Southern California, Delta Health Alliance, and Community Servings outside the submitted work. Dr Newhouse reported receiving grants from the National Institute of Aging and AHRQ during the conduct of the study. No other disclosures were reported., (Copyright 2022 Fung V et al. JAMA Health Forum.)

Objective: Access to specialty mental health care may be poor because many psychiatrists do not accept health insurance reimbursement, whereas many patients rely on insurance to help pay for care. The objective of this study was to examine the extent of participation in private insurance by licensed psychiatrists., Methods: Using 2013 Massachusetts licensing data and the All-Payer Claims Database (APCD), the authors performed a cross-sectional analysis of licensed psychiatrists in Massachusetts. The fraction of psychiatrists who filed insurance claims, number of unique patients with insurance claims per psychiatrist, and physician characteristics associated with insurance participation were evaluated., Results: In 2013, Massachusetts had 2,348 licensed psychiatrists. Overall, 79% (N=1,843) had at least one paid claim for an outpatient visit in the APCD, but only 6% (N=151) had claims for at least 300 patients per year (a full caseload). Psychiatrists had a median of 18 patients with claims (mean=73). Compared with psychiatrists 30-39 years since medical school graduation, those within 19 years since graduation were less likely to bill for an outpatient (7-19 years, odds ratio [OR]=0.67, 95% confidence interval [CI]=0.47-0.94) and less likely to have claims for ≥300 patients per year (7-19 years, OR=0.49, 95% CI=0.29-0.83). Participation varied across insurance types (93% for group commercial plans versus 33% for Medicaid managed care plans)., Conclusions: Among Massachusetts psychiatrists, participation in the private insurance market appears to be limited. Older psychiatrists are more likely to participate, and patients' access to psychiatrists who accept insurance could worsen as these psychiatrists retire.

Provider consolidation may enable improved care coordination, but raises concerns about lack of competition. Physician patient-sharing relationships play a key role in constructing patient care teams, but it is unknown how organization affiliations affect these. We use the Massachusetts All Payer Claims Database to examine whether patient-sharing relationships are associated with sharing a practice site, medical group, and/or physician contracting network. Physicians were 17 percentage points more likely to have a patient-sharing relationship if they shared a practice site and 4 percentage points more likely if they shared a medical group, as compared with sharing no affiliation. However, there was no detectable increased probability of a patient-sharing relationship within the same physician contracting network. Our finding that physician patient-sharing relationships are concentrated within organizational boundaries at practice site and medical group levels helps illuminate referral incentives and provide insight into the role of organizational affiliations in patient care team construction.

We examine the impact of the 2006 Massachusetts healthcare reform on substance use disorder (SUD) treatment facilities' provision of care. We test the impact of the reform on treatment quantity and access. We couple data on the near universe of specialty SUD treatment providers in the USA with a synthetic control method approach. We find little evidence that the reform lead to changes in treatment quantity or access. Reform effects were similar among for-profit and non-profit facilities. In an extension, we show that the reform altered the setting in which treatment is received, the number of offered services, and the number of programs for special populations. These findings may be useful in predicting the implications of major health insurance expansions on the provision of SUD treatment. Copyright © 2017 John Wiley & Sons, Ltd., (Copyright © 2017 John Wiley & Sons, Ltd.)

Objective: To evaluate the impact of health insurance expansion on racial disparities in severity of peripheral arterial disease., Background: Lack of insurance and non-white race are associated with increased severity, increased amputation rates, and decreased revascularization rates in patients with peripheral artery disease (PAD). Little is known about how expanded insurance coverage affects disparities in presentation with and management of PAD. The 2006 Massachusetts health reform expanded coverage to 98% of residents and provided the framework for the Affordable Care Act., Methods: We conducted a retrospective cohort study of nonelderly, white and non-white patients admitted with PAD in Massachusetts (MA) and 4 control states. Risk-adjusted difference-in-differences models were used to evaluate changes in probability of presenting with severe disease. Multivariable linear regression models were used to evaluate disparities in disease severity before and after the 2006 health insurance expansion., Results: Before the 2006 MA insurance expansion, non-white patients in both MA and control states had a 12 to 13 percentage-point higher probability of presenting with severe disease (P < 0.001) than white patients. After the expansion, measured disparities in disease severity by patient race were no longer statistically significant in Massachusetts (+3.0 percentage-point difference, P = 0.385) whereas disparities persisted in control states (+10.0 percentage-point difference, P < 0.001). Overall, non-white patients in MA had an 11.2 percentage-point decreased probability of severe PAD (P = 0.042) relative to concurrent trends in control states., Conclusions: The 2006 Massachusetts insurance expansion was associated with a decreased probability of patients presenting with severe PAD and resolution of measured racial disparities in severe PAD in MA.

Background: Access to physicians is a major concern for Medicaid programs. However, little is known about relationships between physician participation in Medicaid and the individual-level and practice-level characteristics of physicians., Methods: We used the 2011 Massachusetts All Payer Claims Database, containing all commercial and Medicaid claims; we linked with data on physician characteristics. We measured Medicaid participation intensity (fraction of the physician's patient panel with Medicaid) for primary care physicians (PCPs) and medical specialists. We measured influence of physicians within a patient referral network using eigenvector centrality. We used regression models to associate Medicaid intensity with physician individual-level and practice-level characteristics., Findings: About 92.6% of physicians treated at least 1 Medicaid patient, but the median physician's panel contained only 5.7% Medicaid patients. Medicaid intensity was associated with physician training and influence for PCPs and specialists. For medical specialists, a 1 percentage point increase in Medicaid intensity was associated with a lower probability of being board certified (-0.22 percentage points; 95% CI, -0.30, -0.14), lower probability of attending a domestic medical school (-0.14 percentage points; 95% CI, -0.22, -0.05), having attended a less well-ranked domestic medical school (0.23 ranks; 95% CI, 0.15, 0.30), and having slightly less influence in the referral network. PCPs displayed similar results but high Medicaid intensity physicians had substantially less influence in the referral network., Conclusions: Medicaid participation intensity shows substantial variation across physicians, indicating limits of binary participation measures. Physicians with more Medicaid patients had characteristics often perceived by patients to be of lower quality.

Objective: To evaluate the impact of the 2006 Massachusetts (MA) health reform on disparities in the management of acute cholecystitis (AC)., Background: Immediate cholecystectomy has been shown to be the optimal treatment for AC, yet variation in care persists depending upon insurance status and patient race. How increased insurance coverage impacts these disparities in surgical care is not known., Methods: A cohort study of patients admitted with AC in MA and 3 control states from 2001 through 2009 was performed using the Hospital Cost and Utilization Project State Inpatient Databases. We examined all nonelderly white, black, or Latino patients by insurance type and patient race, evaluating changes in the probability of undergoing immediate cholecystectomy and disparities in receiving immediate cholecystectomy before and after Massachusetts health reform., Results: Data from 141,344 patients hospitalized for AC were analyzed. Before the 2006 reform, government-subsidized/self-pay (GS/SP) patients had a 6.6 to 9.9 percentage-point lower (P < 0.001) probability of immediate cholecystectomy in both MA control states. The MA insurance expansion was independently associated with a 2.5 percentage-point increased probability of immediate cholecystectomy for all GS/SP patients in MA (P = 0.049) and a 5.0 percentage-point increased probability (P = 0.011) for nonwhite, GS/SP patients compared to control states. Racial disparities in the probability of immediate cholecystectomy seen before health care reform were no longer statistically significant after reform in MA while persisting in control states., Conclusions: The MA health reform was associated with increased probability of undergoing immediate cholecystectomy for AC and reduced disparities in undergoing cholecystectomy by insurance status and patient race.

Background: Spending and quality under global budgets remain unknown beyond 2 years. We evaluated spending and quality measures during the first 4 years of the Blue Cross Blue Shield of Massachusetts Alternative Quality Contract (AQC)., Methods: We compared spending and quality among enrollees whose physician organizations entered the AQC from 2009 through 2012 with those among persons in control states. We studied spending changes according to year, category of service, site of care, experience managing risk contracts, and price versus utilization. We evaluated process and outcome quality., Results: In the 2009 AQC cohort, medical spending on claims grew an average of $62.21 per enrollee per quarter less than it did in the control cohort over the 4-year period (P<0.001). This amount is equivalent to a 6.8% savings when calculated as a proportion of the average post-AQC spending level in the 2009 AQC cohort. Analogously, the 2010, 2011, and 2012 cohorts had average savings of 8.8% (P<0.001), 9.1% (P<0.001), and 5.8% (P=0.04), respectively, by the end of 2012. Claims savings were concentrated in the outpatient-facility setting and in procedures, imaging, and tests, explained by both reduced prices and reduced utilization. Claims savings were exceeded by incentive payments to providers during the period from 2009 through 2011 but exceeded incentive payments in 2012, generating net savings. Improvements in quality among AQC cohorts generally exceeded those seen elsewhere in New England and nationally., Conclusions: As compared with similar populations in other states, Massachusetts AQC enrollees had lower spending growth and generally greater quality improvements after 4 years. Although other factors in Massachusetts may have contributed, particularly in the later part of the study period, global budget contracts with quality incentives may encourage changes in practice patterns that help reduce spending and improve quality. (Funded by the Commonwealth Fund and others.).

This paper presents an empirical analysis of the effects of providing information about plan quality on consumers' health plan choices in a private employment setting. Analysis of plan switching behavior suggests that the provision of quality information had a small, but significant effect on consumer plan choices. Employees were more likely to switch from plans with lower reported quality. Cross-sectional analyses of plan choice indicate that reported quality played a role in plan selection even after controlling for other health plan characteristics commonly associated with plan choice. The age of the policyholder and the type of policy purchased moderated the effects of plan characteristics on plan choice in ways that may be consequential for adverse selection.