The people behind every visit.
Physicians and advanced practice nurses who lead every study, in English and Spanish.
Our professionals
Healthcare professionals who support participants throughout every study.

Duniesky Dieguez Santiago, MD
Dr. Duniesky Dieguez Santiago is a board-certified Family Medicine physician with advanced fellowship training in Hospice and Palliative Medicine. He completed his Family Medicine residency and fellowship training at Larkin Community Hospital in Florida, bringing extensive experience in hospital medicine, chronic disease management, and comprehensive patient care.
As Principal Investigator at Lumina Clinical Research, Dr. Dieguez oversees clinical trial operations, including participant safety, medical evaluations, protocol compliance, and regulatory oversight. His research experience spans multiple therapeutic areas, including gastroenterology, cardiovascular and metabolic disorders, and infectious diseases.
With a strong clinical background and a patient-centered approach, Dr. Dieguez is dedicated to advancing innovative medical treatments through ethical, high-quality clinical research. He is fluent in English and Spanish.

Maria A. Rodil, M.D.
Dr. Maria A. Rodil is an experienced psychiatrist and clinical research investigator with over 30 years of experience in psychiatry, geriatric mental health, psychopharmacology, and clinical research.
She earned her medical degree from C.E.T.E.C. University and completed her psychiatric residency training at the University of Minnesota and the University of Miami. She further specialized through fellowships in Geriatric Psychiatry, Clinical and Research Geriatrics, and Psychopharmacology.
Throughout her career, Dr. Rodil has held leadership positions, including Medical Director and Academic Director, and has contributed to clinical research focused on Alzheimer's disease, dementia-related behavioral symptoms, Tourette syndrome, and psychiatric treatments in geriatric populations.
Dr. Rodil is currently part of the clinical research team at Lumina Clinical Research, bringing extensive clinical expertise, research experience, and a strong commitment to advancing psychiatric care through ethical, patient-centered clinical studies. She is fluent in English and Spanish, allowing her to effectively serve diverse patient populations.

Lizette Vázquez, FMG, RN, APRN
Lizette Vázquez is an experienced healthcare professional and clinical research Sub-Investigator with over 20 years of experience in medicine, nursing, and patient care. She earned her medical degree in Cuba and later obtained her Master of Science in Nursing, specializing as a Family Nurse Practitioner, from Miami Regional University.
Her professional background includes clinical research, family medicine, hospital care, and nursing leadership. She has participated in Phase I, II, and III clinical trials across multiple therapeutic areas, including Alzheimer's disease, cardiovascular conditions, dermatology, infectious diseases, and immunology.
Lizette currently serves as a Sub-Investigator at Lumina Clinical Research, bringing extensive clinical knowledge, research experience, and a strong commitment to patient safety, ethical research practices, and quality care. She is fluent in English and Spanish, allowing her to effectively serve diverse patient populations.

Cristina Hernández Machado, APRN
Cristina Hernández Machado, APRN, is an Advanced Practice Registered Nurse with a medical degree from the University of Medical Sciences in Cuba and extensive experience in patient care and clinical research. Her professional background includes psychiatric care, clinical assessments, patient management, and research coordination.
As a Sub-Investigator and Clinical Research Rater at Lumina Clinical Research, she brings experience in Phase II and III clinical trials across multiple therapeutic areas, including psychiatry, neuroscience, endocrinology, dermatology, and chronic disease management.
Her expertise includes participant evaluations, clinical rating assessments, study coordination, and regulatory compliance. Fluent in English and Spanish, Cristina is committed to advancing medical research while ensuring patient safety, compassionate care, and the highest standards of clinical practice.
