Artificial Intelligence (AI) is redefining chronic disease management through the fusion of data-driven personalization, predictive analytics, and automated patient support models. This abstract integrates research on AI-based digital health assistants, structured patient support programs, and adaptive communication frameworks aimed at reducing enrollment abandonment while improving treatment persistence and long-term outcomes. AI-enabled chatbots and voice assistants synthesize multimodal data electronic health records, pharmacy claims, wearable metrics, and social determinants to generate predictive insights that anticipate adherence risks and enable personalized interventions at scale. Predictive modeling, reinforcement learning, and causal inference collectively refine outreach strategies by determining optimal communication channels, timing, and tone for each individual, thus enhancing engagement while minimizing fatigue. Natural-language understanding facilitates empathetic and culturally responsive dialogues, while large-language-model copilots streamline onboarding, benefit verification, and prior authorization processes to prevent early program drop-offs. Automation further coordinates medication refills, remote monitoring, and side-effect reporting, maintaining human oversight for clinical decision-making and emotional support. Empirical studies demonstrate that AI-augmented patient support significantly improves medication possession ratios, shortens intervention response times, and reduces hospital readmissions, leading to improved quality of life across conditions such as diabetes, cardiovascular disease, oncology, respiratory disorders, and depression. For healthcare organizations and payers, these improvements translate into enhanced value-based care performance and cost containment. Privacy-preserving analytics including federated learning, homomorphic encryption, and differential privacy safeguard sensitive data, ensuring inclusivity and equitable model performance across diverse populations. A reference framework is proposed that integrates AI-driven assistants, predictive services, and operational workflows through event-driven microservices and interoperable standards such as HL7 FHIR and OAuth 2.0. Continuous feedback loops and real-time dashboards measure adherence, persistence, and patient satisfaction while enabling dynamic recalibration of engagement models. By merging behavioral science principles with advanced machine intelligence, healthcare systems can bridge the persistent gap between prescribed care and real-world adherence, reduce enrollment abandonment, and achieve sustainable improvements in chronic disease management outcomes at scale.