Factors Associated with Early and Periodic Screening, Diagnostic, and Treatment Services in a Medicaid Managed Care Pediatric Population.

Early and Periodic Screening, Diagnostic, and Treatment (EPSDT) services is a Medicaid benefit for children that addresses their health problems before they become advanced, debilitating, and expensive. We conducted a retrospective cross-sectional analysis of pediatric beneficiaries (newborn to younger than 21 years) enrolled in a Medicaid managed care organization to examine the factors associated with EPSDT screening services completion. We obtained 2018 administrative claims data for beneficiaries continuously enrolled for a minimum of 90 days (n=156,108). Completion of EPSDT screening services among our Medicaid managed care beneficiaries was low. Those having more emergency department visits and hospitalizations, having family medicine practitioners as primary care physicians, belonging to the racial/ethnic group Asian/Pacific Islander/Hawaiian/Alaskan Native/Native American, and 18 to younger than 21 years age group were less likely than others to complete EPSDT services. Our results provide information on segments of pediatric beneficiaries that can be targeted to increase EPSDT screening services completion.

A 30 YEAR (1991-2020) RETROSPECTIVE MORTALITY REVIEW OF GIRAFFIDS (GIRAFFA SPP. AND OKAPIA JOHNSTONI) IN MANAGED CARE.

Identifying common causes of mortality in zoo giraffe (Giraffa spp.) and okapi (Okapia johnstoni) provides an opportunity to help improve welfare and population management for these endangered species. Mortality reports from 1,024 giraffe and 95 okapi in zoos were compiled from the Species 360 Zoological Information Management Software (ZIMS) utilizing the Morbidity & Mortality Analysis tool. Thirty years of mortality reports (1991-2020) were evaluated to help identify trends and evaluate the impacts, if any, of changes over time in husbandry and management practices. The most common causes of death for giraffe from 1991 to 2015 were neonatal issues (234/845, 27.7%), trauma (213/845, 25.2%), noninfectious disease (190/845, 22.5%), and infectious disease (188/845, 22.2%). In comparison, the most common causes of mortality for giraffe from 2016 to 2020, were noninfectious disease (78/179, 43.6%), trauma (39/179, 21.8%), neonatal issues (39/179, 21.8%), and infectious disease (17/179, 9.5%). The most common cause of death for okapi from 1991 to 2015 were neonatal issues (29/64, 45.3%), infectious disease (13/64, 20.3%), noninfectious disease (11/64, 17.2%), and trauma (10/64, 15.6%). In comparison, the most common cause of death for okapi from 2016 to 2020 was noninfectious disease (15/31, 48.4%), neonatal issues (8/31, 25.8%), and infectious disease (5/31, 16.1%). The results suggest that zoo giraffids have had a relative decrease in mortality from infectious diseases in recent years, whereas death from noninfectious causes has increased significantly. Trauma-related giraffe mortalities and neonatal mortality in both giraffe and okapi, although decreasing in prevalence between time periods, continue to be important causes of death in zoos. This is the first descriptive mortality review for the Giraffidae family and provides data on potential giraffe and okapi health issues that zoos could proactively address.

Fostering Flexibility: How Medicare Advantage Potentially Accelerated Telehealth Benefits.

In 2018, the US Congress enacted a policy permitting Medicare Advantage (MA) plans to cover telehealth services in a beneficiary's home and through audio-only means as part of the basic benefit package of services, where prior to the policy change such benefits were only allowed to be covered as a supplemental benefit. MA plans were afforded 2 years of lead time for strategizing, negotiating, and capital investment prior to the start date (January 1, 2020) of the new coverage option. Our data analysis found basic benefit telehealth was offered by plans comprising 71% of enrollment in 2020 and increased to 95% in 2021. At the same time, remote access telehealth was offered as a supplemental benefit for 69% of enrollees in 2020, a decrease of 23% compared to 2019. These efforts by MA plans may have enabled traditional Medicare (TM) to leverage an existing telehealth infrastructure as a solution to the access issues created by public health policies requiring sheltering in place and social distancing during the COVID-19 pandemic. The success of this MA policy prompts consideration of additional flexibility beyond the standard basic benefit package, and whether such benefits reduce costs while improving access and/or outcomes in the context of a managed care environment like MA. Subject to oversight, such flexibility could potentially improve value in MA, and facilitate future changes in TM, as appropriate.

Technology, data, people, and partnerships in addressing unmet social needs within Medicaid Managed Care.

BACKGROUND: Individuals with unmet social needs experience adverse health outcomes and are subject to greater inequities in health and social outcomes. Given the high prevalence of unmet needs among Medicaid enrollees, many Medicaid managed care organizations (MCOs) are now screening enrollees for unmet social needs and connecting them to community-based organizations (CBOs) with knowledge and resources to address identified needs. The use of screening and referral technology and data sharing are often considered key components in programs integrating health and social services. Despite this emphasis on technology and data collection, research suggests substantial barriers exist in operationalizing effective systems. METHODS: We used qualitative methods to examine cross-sector perspectives on the use of data and technology to facilitate MCO and CBO partnerships in Kentucky, a state with high Medicaid enrollment, to address enrollee social needs. We recruited participants through targeted sampling, and conducted 46 in-depth interviews with 26 representatives from all six Kentucky MCOs and 20 CBO leaders. Qualitative descriptive analysis, an inductive approach, was used to identify salient themes. RESULTS: We found that MCOs and CBOs have differing levels of need for data, varying incentives for collecting and sharing data, and differing valuations of what data can or should do. Four themes emerged from interviewees' descriptions of how they use data, including 1) to screen for patient needs, 2) to case manage, 3) to evaluate the effectiveness of programs, and 4) to partner with each other. Underlying these data use themes were areas of alignment between MCOs/CBOs, areas of incongruence, and areas of tension (both practical and ideological). The inability to interface with community partners for data privacy and ownership concerns contributes to division. Our findings suggest a disconnect between MCOs and CBOs regarding terms of their technology interfacing despite their shared mission of meeting the unmet social needs of enrollees. CONCLUSIONS: While data and technology can be used to identify enrollee needs and determine the most critical need, it is not sufficient in resolving challenges. People and relationships across sectors are vital in connecting enrollees with the community resources to resolve unmet needs.

Evaluation of a collaborative model between managed care and affordable housing on acute care costs.

OBJECTIVES: This study evaluated a collaborative service model between the largest Medicaid managed care organization (MCO) in Texas, Superior HealthPlan, and the affordable housing provider Prospera Housing Community Services. STUDY DESIGN: Using a quasi-experimental 2-groups research design, we compared health care outcomes and costs between a sample of 104 participants served by the Prospera+Superior collaborative model and a group of 104 participants who had health care coverage through the Superior HealthPlan Medicaid MCO but did not live at Prospera properties (ie, Superior-only group). METHODS: Data from medical claims were analyzed to examine change in outcomes 12 months before and after implementation of the Prospera+Superior collaborative model in 2019. RESULTS: The Prospera+Superior group had a 56% lower rate of emergency department/urgent care visits and spent $2061 less in prescription costs than the Superior-only group after implementation. CONCLUSIONS: These findings provide needed evidence of the clinical and economic value of forming multisector collaborative models between MCOs and other community providers.

The value of improving insurance quality: Evidence from long-run Medicaid attrition.

The US government increasingly provides public health insurance coverage through private firms. We examine associated welfare implications for beneficiaries, using a 'revealed preference' framework based on beneficiaries' program attrition rates. Focusing on the Medicaid program in New York State, we exploit quasi-random variation in the initial assignment at birth to public versus private Medicaid based on birth weight. We find that infants assigned to private Medicaid at birth are less likely to subsequently leave Medicaid. We provide suggestive evidence that reduced attrition reflects beneficiary responses to improved program quality, rather than alternative mechanisms such as private Medicaid plans reducing re-enrollment barriers.

Are disparities in mental health care for Medicaid beneficiaries lower in managed care?

BACKGROUND: There are large and persistent racial and ethnic disparities in the use of mental health care in the United States. Medicaid managed care plans have the potential to reduce racial and ethnic disparities in use of mental health care through monitoring of need and active management of use of services across the populations they cover. This study compares racial and ethnic disparities among Medicaid beneficiaries in managed care with those not in managed care. METHODS: We compared Medicaid beneficiaries enrolled health maintenance organizations (HMOs) with those in fee-for-service (FFS) using data from the 2007-2015 Medical Expenditure Panel Survey (N = 26,113). We specified two-part propensity score adjusted models to estimate differences in mental health related emergency department visits, hospital stays, prescription fills, and outpatient visits overall and by race/ethnicity. RESULTS: HMO enrollment was associated with lower odds of having a mental health prescription (OR = 0.86, 95 % CI 0.78-0.96) or outpatient visit (OR = 0.82 95 % CI 0.73-0.92). These differences were similar across racial and ethnic groups or larger among Non-Hispanic Black and Hispanic beneficiaries than among Non-Hispanic White beneficiaries. CONCLUSIONS: Medicaid managed care has not improved the inequitable allocation of mental health care across racial and ethnic groups. Explicit attention to monitoring of racial and ethnic differences in use of mental health care in Medicaid managed care is warranted. IMPLICATIONS: Improvement in racial and ethnic disparities in mental health care in Medicaid manage care is unlikely to occur without targeted accountability mechanisms, such as required reporting or other contracting requirements.

Bacterial abscesses in whitespotted bamboo sharks (Chiloscyllium plagiosum) in managed care.

Sixteen whitespotted bamboo sharks (Chiloscyllium plagiosum) with histologically similar bacterial abscesses were submitted to Northwest ZooPath from nine zoo and aquarium institutions over a 17-year period. These abscesses were characterized by inflammatory cell infiltrates and necrosis with intralesional small, Gram-positive, acid-fast negative, cocci bacteria. The clinical presentation, histologic findings, and culture results indicate that Enterococcus faecalis is a relatively common cause of these lesions in whitespotted bamboo sharks. This organism also provides a treatment challenge due to its inherent antibiotic-resistant properties and ability to form biofilms, confounding the host's immune response. Enterococcus faecalis represents an important cause for abscess formation and cellulitis in captive whitespotted bamboo sharks.

Updating the Chronic Illness and Disability Payment System.

BACKGROUND: Of the 38 Medicaid programs that risk adjust payments to Medicaid managed care organizations (MCOs), 33 of them use the Chronic Illness and Disability Payment System (CDPS). There has been recent interest in adding social determinants of health (SDH) into risk-adjustment models. OBJECTIVE: To update the CDPS models using recent MCO data based on the International Classification of Diseases version 10 coding system and to explore whether indicators of SDH are predictive of expenditures. RESEARCH DESIGN: Data from 3 national Medicaid MCOs and 8 states are used to update the CDPS model. We test whether spending on Medicaid beneficiaries living in economically and socially deprived communities is greater than spending on similar beneficiaries in less deprived communities. SUBJECTS: Medicaid beneficiaries with full benefits and without dual eligibility under Medicare enrolled in Medicaid MCOs in 8 states during 2017-2019, including 1.4M disabled beneficiaries, 9.2M children, and 6.4M adults. MEASURES: Health care eligibility and claims records. Indicators based on the Social Deprivation Index were used to measure SDH. RESULTS: The revised CDPS model has 52 CDPS categories within 19 major categories. Six major categories of CDPS were revised: Psychiatric, Pulmonary, Renal, Cancer, Infectious Disease, and Hematological. We found no relationship between health care spending and the Social Deprivation Index. CONCLUSIONS: The revised CDPS models and regression weights reflect the updated International Classification of Diseases-10 coding system and recent managed care delivery. States should choose alternative payment strategies to address disparities in health and health outcomes.

Accuracy of Cancer Registry Primary Payer Information and Implications for Policy Research.

BACKGROUND: Cancer registry-based "primary payer at diagnosis" (PPDx) data are commonly used to evaluate the effect of insurance on cancer care outcomes, yet little is known about how well they capture Medicaid or Medicare enrollment. METHODS: We linked the National Cancer Institute's Surveillance, Epidemiology, and End Results registry data to monthly Centers for Medicare and Medicaid Services (CMS) Medicaid and Medicare enrollment records, state-year Medicaid policy, and managed care enrollment. We selected adults aged 19-64 years diagnosed between 2007 and 2011. We used bivariate analyses to compare PPDx to CMS enrollment at diagnosis month and assessed underreporting rates by patient characteristics and state-year policy. RESULTS: PPDx reported 7.8% Medicare and 10.1% Medicaid, whereas CMS enrollment indicated 5.5% Medicare, 10.4% Medicaid, and 3.4% dual Medicare-Medicaid (N = 896,031). Positive predictive values for PPDx assignment to Medicaid and Medicare were 65.3% and 75.4%, with false negative rates of 52.0% and 33.8%, respectively. Medicaid underreporting was higher in low (56.5%) versus high (50.8%) poverty areas, for males (56.1%) versus females (48.9%), for Medicaid poverty expansion or waiver enrolled (63.8%) versus cash assistance-related eligibility (47.3%), and in states with large managed care enrollment (all P < 0.001). If Medicaid and Medicare enrollment data were used to edit PPDx, 12.0% of persons would switch primary payer assignment. CONCLUSIONS: Registry-reported PPDx fails to fully capture Medicaid and Medicare enrollment, which may result in biased estimates of insurance-related policy impacts. Enhancement with objective enrollment data could reduce measurement error and bias in estimates necessary to support policy assessment.

Medicaid Managed Care Prior Authorization For Buprenorphine Tied To State Partisanship And Health Plan Profit Status, 2018.

Buprenorphine is among the most effective drugs for treating opioid use disorder, yet only a quarter of Americans who need it receive it. Requiring prior authorization has been identified as an important barrier to buprenorphine access. However, the practice remains widespread in Medicaid-the largest insurer of Americans with opioid use disorder. In this study, we examined how prior authorization for buprenorphine is related to plan structure and state political environment, using data on all 266 comprehensive Medicaid managed care plans active in 2018. We found substantial variation in prior authorization use across states, with all plans requiring prior authorization in eleven states and no plans requiring it in thirteen other states. We found that for-profit plans and those located in Republican states were more likely to impose prior authorization policies. Our findings suggest that managed care plans' decisions regarding use of prior authorization may be shaped by internal pressures to control costs, as well as by differing partisan stances regarding the need to prevent criminal diversion of buprenorphine.

Financing Policy Considerations From Texas to Optimize Care for Children With Medical Complexity.

Texas has a tremendous opportunity and momentum to build a more effective system of care for children with medical complexity (CMC) and their families. This is evidenced by growing collaboration among many committed partners since implementation of the Medicaid STAR Kids managed care program in 2016 and Texas' participation in a US Health Resources and Services Administration-funded, 10-state Collaborative Improvement and Innovation Network to Advance Care for CMC from 2017 to 2022. Texas has several comprehensive health homes for CMC that position the state to serve as a national model of integrated, family-centered care for CMC and ensure high-quality care to an exceedingly vulnerable population. Further, Texas' elected leaders demonstrated their interest in system innovation in 2019 and 2021 by enacting state legislation to explore alternative care models and conduct a health home pilot for CMC. Much more must be done to sustain the work underway and bring the promise of care transformation to reality. To this point, we recommend that care planning and coordination be delegated to provider-led, integrated health homes for CMC with alternative payment structures that appropriately reimburse and align incentives with optimal care delivery. To realize the policy aspirations of an effective system of care for CMC, regulatory oversight, payment models, and outcome measures need to be improved to align with the vision articulated in Texas legislation and agency guidance. Although each state's Medicaid program is different, we believe each state can take away policy lessons from those learned by Texas.

Is the emergency department used as a substitute or a complement to primary care in Medicaid?

Policies to decrease low-acuity emergency department (ED) use have traditionally assumed that EDs are a substitute for unavailable primary care (PC). However, such policies can exacerbate ED overcrowding, rather than ameliorate it, if patients use EDs to complement, rather than substitute, their PC use. We tested whether Medicaid managed care enrolees visit the ED for nonemergent and PC treatable conditions to substitute for or to complement PC. Based on consumer choice theory, we modelled county-level monthly ED visit rate as a function of PC supply and used 2012-2015 New York Statewide Planning and Research Cooperative System (SPARCS) outpatient data and non-linear least squares method to test substitution vs complementarity. In the post-Medicaid expansion period (2014-2015), ED and PC are substitutes state-wide, but are complements in highly urban and poorer counties during nights and weekends. There is no evidence of complementarity before the expansion (2012-2013). Analyses by PC provider demonstrate that the relationship between ED and PC differs depending on whether PC is provided by physicians or advanced practice providers. Policies to reduce low-acuity ED use via improved PC access in Medicaid are likely to be most effective if they focus on increasing actual appointment availability, ideally by physicians, in areas with low PC provider supply. Different aspects of PC access may be differently related to low-acuity ED use.

Impact of Illness Severity Tools on Adolescent Psychiatric Managed Care in California.

Youth with mental illness struggle to receive essential behavioral health care. One obstacle is denial of coverage by insurance. In California, managed care consumers may apply for independent medical review (IMR) which potentially overturns an insurance denial through the California Department of Managed Healthcare (CDMHC). The authors aim to analyze IMR appeals for psychiatric treatment among adolescents and elucidate factors associated with obtaining coverage of care. We performed an analysis to identify factors that are associated with depression and substance use disorder (SUD) treatment claim denials in 11-20-year-olds from 2001 to 2022 using CDMHC data. Logistic regression modeling was used to identify specific factors related to claim characteristics and medical society instruments that are significantly associated with overturning a denial by IMR. Behavioral health IMRs are overturned at a higher rate than non-behavioral health claims. 54.5% of those with depression and 36.3% of those with SUD initially denied care coverage were overturned by IMR. For those seeking depression treatment, we found a significantly greater odds of overturn by IMR if there was a reference of CALOCUS [1.64, 95%CI (1.06-2.5)]. The odds of a SUD treatment denial being overturned was significantly greater if referencing CALOCUS [3.85 (1.54-9.62)] or ASAM [2.47, [4.3 (1.77-10.47)]. After the standardized implementation of illness severity tools in IMRs, the odds of a medically necessary claim being overturned was 2.5 times higher than before the standards. With a high percentage of claims being overturned after IMR, the findings suggest that health plans inappropriately deny medically necessary behavioral health treatment. The use of medical society instruments was associated with higher odds of overturning a denial. The recent decision of CDMHC to implement standard use of CALOCUS and similar illness severity criteria is supported by our findings and may facilitate more equitable care.

A Comparison of Venaseal Versus Radiofrequency Ablation Outcomes Within a Managed Care Organization.

BACKGROUND: Chronic venous insufficiency is a common medical condition that afflicts over 30 million adults in the United States. Treatment and management have changed dramatically over the past 20 years with the introduction of various endovenous therapies, including radiofrequency ablation (RFA) and cyanoacrylate closure using the Venaseal system. In this study, we explore a direct comparison of outcomes between RFA and VenaSeal conducted by a single surgeon within a managed care organization. METHODS: Between May 2020 and December 2021, there were 87 patients undergoing 97 total procedures who were treated with either VenaSeal (n = 55) or RFA (n = 42), conducted by a single surgeon within a managed care organization. Primary outcomes included successful greater saphenous vein (GSV) closure, postoperative deep vein thrombosis (DVT), embolization, saphenofemoral junction (SFJ) thrombosis, skin reaction (allergic or thrombophlebitis), or procedure-related emergency room (ER) and urgent care (UC) visits. Retrospective chart review was conducted to describe patient demographics, indications for treatment, treatment details (number of access sites and indication for treatment), as well as follow-up adjunctive vein procedures (sclerotherapy and stab phlebectomy). RESULTS: All patients had postprocedural ultrasound (US) performed within 7 days by the operating surgeon and mean overall patient follow-up from index procedure was 12 months; 2 patients were lost to follow-up due to death. All operations utilized intraoperative US, and SFJ thrombosis was not observed in any patient postprocedure. The average age of VenaSeal and RFA groups was 59.05 and 59.51 years, respectively. The average number of access sites during the procedure for VenaSeal and RFA was 1.56 and 1.20, respectively. Of the 55 VenaSeal treatments, 9.1% of patients reported postoperative skin reactions, and 9.1% of patients underwent subsequent stab phlebectomy (22 stabs on average). Of the 42 RFA treatments, 7.1% of RFA patients reported postoperative skin reactions, and 9.5% underwent subsequent stab phlebectomy (36 stabs on average). The percentage of patients who had postoperative UC or emergency department visits related to the procedure in the VenaSeal and RFA groups was 3.6% and 0%, respectively. CONCLUSIONS: Both VenaSeal and RFA demonstrated effective vein closure of the GSV at 12-month follow-up, with VenaSeal demonstrating continued noninferiority to RFA. Based on our data, postoperative skin reactions do not appear to be significantly higher with VenaSeal treatment, as previously reported.

Medicare Advantage Is Associated with Lower Utilization of Total Joint Arthroplasty.

BACKGROUND: Medicare Advantage (MA) insurers use managed care techniques to review the utilization of medical services and control costs. It is unclear if MA enrollees have a lower utilization of elective surgical procedures such as inpatient hip and knee total joint arthroplasty (TJA), which have traditionally been covered by traditional Medicare (TM) without restrictions. METHODS: We conducted a cross-sectional study using a 20% sample of 2018 TM claims and MA encounter records for 5,300,188 TM enrollees and 1,970,032 MA enrollees who were 65 to 85 years of age. We calculated unadjusted and adjusted differences (controlling for beneficiary and market characteristics) in the incidence of TJA for MA compared with TM, and by MA plan type. Finally, we calculated differences in the time to contact with an orthopaedic surgeon and time to the surgical procedure among enrollees with an osteoarthritis diagnosis. RESULTS: After controlling for observable characteristics, there was a 15.6% lower incidence of TJA in MA enrollees compared with TM enrollees (p < 0.001). Compared with TM enrollees, health maintenance organization (HMO) enrollees were 28.1% less likely to undergo TJA, controlling for observable characteristics (p < 0.001). From the initial diagnosis, the time to contact with an orthopaedic surgeon and the time to the surgical procedure were also lower among TM enrollees compared with MA enrollees. At 2 years after an osteoarthritis diagnosis, 10.4% of TM enrollees, 7.9% of preferred provider organization (PPO) enrollees, and 5.7% of HMO enrollees had undergone inpatient TJA. CONCLUSIONS: MA coverage was associated with a lower utilization of elective, inpatient hip and knee TJA. MA was also associated with a longer time to orthopaedic surgeon evaluation and surgical procedure. LEVEL OF EVIDENCE: Prognostic Level III . See Instructions for Authors for a complete description of levels of evidence.

Improving Diabetes Control in a Medicaid Managed Care Population With Complex Needs.

INTRODUCTION: People enrolled in Medicaid managed care who struggle with diabetes control often have complex medical, behavioral, and social needs. Here the authors report the results of a program designed to partner with primary care teams to address those needs. METHODS: A nonprofit organization partnered with a Medicaid managed care plan and a Federally Qualified Health Center in California to enroll people with A1cs >9% in a 12-month program. The program team included a community health worker, certified diabetes care and education specialist/registered dietitian, behavioral health counselor, and registered nurse. They developed patient-led action plans, connected patients to community resources, and supported behavior changes to improve diabetes control. Baseline assessments of behavioral health conditions and social needs were collected. Monthly A1c values were tracked for participants and a comparison group. RESULTS: Of the 51 people enrolled, 83% had at least 1 behavioral health condition. More than 90% reported at least 1 unmet social need. The average monthly A1c among program participants was 0.699 lower than the comparison group post-enrollment (P = .0008), and the disparity in A1c between Hispanic and non-Hispanic White participants at enrollment declined. DISCUSSION: Participants had high levels of unmet medical, behavioral, and social needs. Addressing these needs resulted in a rapid and sustained improvement in A1c control compared to non-enrollees and a reduction in disparity of control among Hispanic participants. CONCLUSION: By partnering with a primary care team, a program external to Federally Qualified Health Center primary care can improve clinical outcomes for people with complex needs living with diabetes.

Differences in Health Care Utilization of High-Need and High-Cost Patients of Federally Funded Health Centers Versus Other Primary Care Providers.

BACKGROUND: Primary care providers (PCP) differ in their ability to address the needs and reduce use of costly services among complex Medicaid beneficiaries. Among PCPs, Health Resources and Services Administration (HRSA)-funded health centers (HCs) are shown to provide high-value care. OBJECTIVE: We compared health care utilization of complex Medicaid managed care beneficiaries whose PCPs were HCs versus 3 other groups. RESEARCH DESIGN: Cross-sectional study using propensity score matching comparing health care use by provider type, controlling for demographics, health status, and other covariates. SUBJECTS: California Medicaid administrative data for complex adult managed care beneficiaries with at least 1 primary care visit in 2018. MEASURES: Primary and specialty care evaluation & management visits and services; emergency department (ED) visits; and hospitalizations. PCPs included HCs, clinics not funded by HRSA, solo, and group practice providers. RESULTS: HRSA-funded HCs had lower predicted rates of specialty evaluation & management and other services than all others; lower predicted probability of any ED visits than clinics not funded by HRSA [54% (95% CI: 53%-55%) vs. 56% (95% CI: 55%-57%)] and group practice providers [51% (95% CI: 51%-52%) vs. 52% (95% CI: 52%-53%)]; and lower PP of any hospitalizations than solo [20% (95% CI: 19%-20%) vs. 23% (95% CI: 22%-24%)] and group practice providers [21% (95% CI: 20%-21%) vs. 24% (95% CI: 23%-24%)]. CONCLUSIONS: Differences in HC care delivery and practices were associated with lower use of specialty, ED, and hospitalization visits compared with other PCPs for complex Medicaid managed care beneficiaries. Understanding the underlying reasons for these utilization differences may promote better outcomes among these patients.