Dr. Maria Santos, Chief Medical Officer

Chief Medical Officer

Dr. Maria Santos

Physician executive with deep expertise in population health, chronic disease management, and value-based care quality programs for diverse, bilingual patient populations.

18 years of clinical and administrative experience in primary care, internal medicine, and managed care quality leadership in Puerto Rico and the continental United States.

Specialties

Population Health Management

Chronic Disease Management

Clinical Quality Improvement

Value-Based Care Program Design

Health Equity and Social Determinants of Health

Education

  • M.D., University of Puerto Rico School of Medicine

  • Residency, Internal Medicine, Hospital Universitario de Puerto Rico

  • M.P.H., Johns Hopkins Bloomberg School of Public Health

Certifications

  • Board Certified, Internal Medicine, American Board of Internal Medicine (ABIM)

  • Certified Medical Director, American Association for Physician Leadership (AAPL)

msantos@alianza.health San Juan, Puerto Rico

Connect

Dr. Maria Santos serves as Chief Medical Officer of Alianza Health Partners, providing clinical and strategic leadership across all eight of the company’s service lines. She is responsible for clinical quality, physician engagement, care model design, and the medical direction of Alianza’s population health and value-based care programs.

Dr. Santos brings a rare combination of frontline clinical experience and healthcare executive leadership. She practiced as an internist for nearly a decade in Puerto Rico before transitioning to population health leadership, where she led quality improvement and care management programs for a major Puerto Rico managed care organization. That dual perspective—patient at the center, system in view—informs everything she brings to Alianza’s clinical strategy.

Under her medical direction, Alianza’s primary care network has achieved top-decile performance on key HEDIS measures including diabetes management, hypertension control, and colorectal cancer screening. She personally oversees the design of Alianza’s clinical protocols, care management workflows, and the MyChron population health platform’s clinical decision support rules.

Dr. Santos is a recognized voice in Puerto Rico’s healthcare community on the topics of health disparities, social determinants of health, and the role of bilingual, culturally competent care in improving outcomes for the island’s diverse population.