Understanding Trajectories of Screening for Adverse Childhood Experiences Among Clinics Serving Medi-Cal Beneficiaries
RAND Health Quarterly, 2025; 12(4):9
RAND Health Quarterly, 2025; 12(4):9
RAND Health Quarterly is an online-only journal dedicated to showcasing the breadth of health research and policy analysis conducted RAND-wide.
More in this issueIn January 2020, Medi-Cal began reimbursing clinics for screening for and responding to adverse childhood experiences (ACEs) as part of an effort to promote trauma-informed health care (TIHC). Since that time, ACE screening and response has grown rapidly, but unevenly, across primary care clinics across the state. In this evaluation, the authors examine factors that have contributed to variation in ACE screening rates across clinics that serve Medi-Cal beneficiaries. By improving understanding of the reasons clinics differ in screening practices, the authors aim to help tailor and target efforts to promote continued growth in TIHC.
This evaluation had two interrelated components. First, the authors used Medi-Cal claims data on screening-related reimbursements to identify groups of clinics with different screening trajectories. Second, they conducted qualitative interviews with clinic representatives in each of those trajectory groups about the factors that influenced their screening practices. Clinics were selected to ensure diversity with respect to region of the state, rural versus non-rural locations, Federally Qualified Health Centers (FQHCs) versus private clinics, and clinics with versus without pediatric providers. Screening was found to vary based on clinic location and the presence of a pediatric provider. Common barriers to screening included lack of awareness and concerns about the availability of referral resources. The authors make recommendations, based on their findings, for actions that address barriers to screening and TIHC for pediatric and adult primary care clinics serving Medi-Cal beneficiaries.
In January 2020, Medi-Cal began reimbursing clinics for screening for and responding to Adverse Childhood Experiences (ACE) as part of an effort to promote trauma-informed health care (TIHC). Since that time, ACE screening and response has grown rapidly, but unevenly, across primary care clinics across the state. In this evaluation, we examine the factors that have contributed to this variation in ACE screening across clinics that serve Medi-Cal beneficiaries. By improving our understanding of the reasons clinics differ in screening practices, we aim to help tailor and target efforts to continue the growth in TIHC.
The project had two interrelated components. First, we used Medi-Cal claims data on screening to identify groups of clinics with different screening histories. Second, we conducted qualitative interviews with clinic representatives in each of those groups, as well as with representatives in clinics that have not yet begun screening, about the factors that influenced their screening practices. We aimed for diversity among the interviewees with respect to region of the state, rural versus non-rural locations, Federally Qualified Health Centers (FQHCs) versus private clinics, and clinics with versus without pediatric providers.
Our analysis of variation across clinics in ACE screening identified the following four screening trajectory groups:
We conducted 46 interviews with representatives of 44 clinics across the four screening trajectory groups. In our qualitative analysis, we found that the factors influencing screening were similar for early and late adopters, and we combined these two groups into a larger sustainer group, pointing out differences when they occurred. Summaries of the major themes related to screening trajectories are presented below.
Clinic representatives in the early and late adopter groups described both internal and external influences on their decisions to implement ACE screening. Internal influences included a strong motivation to address unmet health and health care needs among the most-vulnerable and most-underserved patient populations. External influences included pressure from a managed care organization (MCO) to implement screening, with monitoring screening required as part of a measure of quality of care. Sustainment of screening over time was supported by prospective monitoring of ACE screening (i.e., tracking which patients are due for screening), emailing the Pediatric ACE and Related Life Events Screener (PEARLS) form to patients prior to their visit, and making referral resources (most often behavioral health care providers) available. The most common reason that late adopters implemented screening later than early adopters was because they lacked awareness of screening. In most cases, late adopters indicated that they began screening soon after hearing about it.
Most clinics in the non-sustainer group had not decided to deliberately curtail or cease screening. Interviewees suggested several possible explanations for why screening had declined, including that they see only adults, had already screened most of their patients, or lacked sufficient referral resources. Among the clinics that deliberately decreased screening, the major factors interviewees gave were a lack of referral resources and difficulty getting reimbursement.
Most of the never-screener clinics were unaware of ACE screening before being contacted to participate in this evaluation. On hearing about ACE screening for the first time when they were recruited to this evaluation, interviewees saw the potential to use ACE screening to address unmet needs in their patient populations and were interested in learning more. Never-screeners also had questions and concerns about screening related to adequate referral resources, patient comfort with personal questions, and implementation of screening in the context of already complex clinic workflows.
In addition to our findings regarding reasons that clinics differed in their screening trajectories, six major themes emerged from our evaluation and became the basis for our recommendations.
Clinics that did not screen differed from clinics that did screen with respect to their locations, whether they were FQHCs, and whether they listed a pediatric provider among their staff:
Interviewees mentioned several types of training as potentially helpful for implementing and sustaining ACE screening:
Because we found that many clinics were not conducting ACE screening simply because they were not aware of it, we recommend targeted outreach to never-screener clinics. Outreach should target clinics in areas where lower proportions of clinics are screening (i.e., rural areas and regions outside Southern California). Claims data could be used to identify never-screener clinics. Outreach efforts could include mailings (the evaluation benefited from sending FedEx letters), local gatherings of providers, offers to give implementation consulting, and opportunities for start-up grants to support clinic planning. Claims data could also be used to identify high-performing clinics that can be engaged in peer-to-peer dissemination and to characterize clinics' patient populations (e.g., clinics that see adults only) to tailor outreach materials. MCOs could be engaged to target messages about ACE screening to clinics in which their beneficiaries are treated.
The UCLA/UCSF ACE Aware Family Resilience Network (UCAAN), which is a multi-campus initiative of the University of California, Los Angeles, and the University of California, San Francisco, should respond to clinics' needs for training related to ACE and TIHC by developing and disseminating additional training materials. UCAAN already has infrastructure for developing and providing training through its education and training department. New offerings should continue to address the science and theory of ACE and toxic stress while also covering practical matters that we found to be essential to ACE screening sustainment, such as screening workflow, use of technology (for example, tablets and advanced EHR integration), billing for ACE screens, responding to ACE screening results, and the ability to address concerns raised by patients. The trainings should be tailored to specific audiences, including nonclinical staff, staff with prior training who need refresher courses, and newly hired staff.
In providing additional training, UCAAN should tailor implementation strategies to different types of clinics. Although there is no gold standard for conducting ACE screening and response, UCAAN has a wealth of knowledge based on research into toxic stress and the practice-based knowledge gained from working in diverse clinical settings that can address clinics' concerns and promote implementation. The training and guidance should have specific information for clinics that
UCAAN should address the concerns about how to respond to ACE scores by working both alone and in collaboration with clinics, MCOs, and the state to develop and disseminate information related to the implementation of ACE screening and TIHC.
Clinics often indicated that their screening practices were influenced by MCOs, either positively through encouragement or negatively through claims denials. UCAAN should work with MCOs to
Our findings highlight the importance of shared responsibility in starting and continuing ACE screening. Clinics should encourage a team-based approach to TIHC that is inclusive of ACE screening and involves staff across multiple roles and hierarchies, including clinic leadership, physicians, nurses, medical assistants, and support staff, each implementing distinct tasks in the ACE screening process. Such a comprehensive approach can help sustain ACE screenings if an initial champion leaves the clinic.
To facilitate the continuation of ACE screening, clinics should implement structured feedback systems to those individuals who are involved in the screening process. These systems should actively monitor ACE screening frequencies and responses to positive screens. Supervisors can then give providers their performance metrics on a routine basis and facilitate conversations with staff who are struggling to meet targets. This approach can help staff identify barriers and develop solutions to improve their ACE screening rates.
Since the beginning of Medi-Cal reimbursement for ACE screening and response in January 2020, clinics across the state have varied in their implementation of ACE screening in fulfillment of their mission of addressing the health care needs of low-income Californians. Many clinics have integrated ACE screening into their routine practices, gaining valuable lessons related to implementation and sustainment in the process. However, there are also clinics that have struggled to maintain screening levels and many clinics that have yet to consider screening. Promoting ACE screening at this stage, when there is such diversity across primary care clinics, will require careful assessment of the needs and interests of different types of clinics. This evaluation is intended to address this variation and point the way toward more-tailored and more-targeted approaches, which will be necessary in the next phase of statewide promotion of TIHC in Medi-Cal.
This research was funded by the UCLA/UCSF ACEs Aware Family Resilience Network (UCAAN) through a contract with the California Department of Health Care Services (DHCS) and carried out within the Quality Measurement and Improvement Program in RAND Health Care.
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