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Michael Castro, MD, FACP
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Program Director, Assistant Professor
Medical School: University of Puerto Rico School of Medicine
Residency: Maricopa Medical Center Internal Medicine Residency Program, Phoenix
Research/Clinical Interests: Academic Medicine, Diabetes, Cardiovascular disease, Cardiac Amyloidosis, Dementia, Pharmacology
Hobbies and Personal Interests: Running, Hiking, Traveling
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Leigh Holdsworth BHSc, MSc, MD
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Associate Program Director
Medical School: The University of Sint Eustatius School of Medicine
Residency: Wellspan York Hospital, Pennsylvania – Internal Medicine
Research/Clinical Interests: Hospital Medicine, Palliative Care, Medical Ethics, Quality of Life in Chronic Illness
Hobbies and Personal Interests: Dr. Holdsworth is deeply committed to the growth and development of residents, emphasizing big-picture concepts such as quality of life and patient-centered care. He is passionate about mentoring the next generation of physicians to become compassionate, skilled, and ethical clinicians.
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Nimit A Patel, MD
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Associate Program Director
Medical School: University of Sint Eustatius
Residency: Grand Rapids Medical Education Partners – Michigan State University
Research/Clinical Interests: Internal Medicine, Hospital Medicine, Critical Care
Hobbies and Personal Interests: Photography, Travel, Spending time with family
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Pedro Rodriguez Guggiagi, MD, FACP
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Associate Program Director
Medical School: Universidad Nacional de Asuncion - Paraguay
Residency: Nassau Univ. Medical Center, Long Island, NY
Research/Clinical Interests: Optimizing Medical communication, management of complex medical conditions, creating an ever improving, excelling medical care environment centered on the Patient-Physician partnership.
Hobbies and Personal Interests: Beyond clinical and teaching roles, he is active as a Fellow in the American College of Physicians, contributing to advocacy, physician well-being, and public policy at both state and national levels. As Chair of the Arizona Latin-American Medical Association, he promotes
leadership, education, and culturally competent care, reflecting his dedication to advancing healthcare and strengthening community impact
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Maya Stamm, MD, FAAP
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Associate Program Director of Learner Assessment and Assistant Professor at University of Arizona College of Medicine – Phoenix
Medical School: Rush Medical College
Residency: Internal Medicine Pediatrics - University of Arizona College of Medicine – Phoenix
Research/Clinical Interests: Medical education, hospital medicine, global health
Hobbies and Personal Interests: Traveling, podcasts, and spending time with my husband and 3 kids
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Alina Danciu, MD
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Assistant Clinical Professor
Medical School: University of Medicine, Timisoara, Romania
Residency: Internal Medicine Residency Program, St. Joseph Mercy Oakland Hospital, Pontiac, Michigan
Research/Clinical Interests: Hospital medicine, Practice- based learning
Hobbies and Personal Interests: Social dancing, skiing
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Baharak Tabarsi, MD, FAAFP
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Clinical Associate Professor of Medicine
Medical School: Memorial University of Newfoundland Faculty of Medicine – St. John's, Newfoundland, Canada
Residency: Family Medicine Residency Program, McGill University Faculty of Medicine – Montreal, Quebec, Canada
Research/Clinical Interests: Refugee and immigrant health, Social and moral determinants of health, Medical education, Quality improvement
Hobbies and Personal Interests: Long walks with family and close friends with a well-pulled shot of espresso in her hands
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Heather Merchut, DO
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Residency Core Faculty
Medical School: Touro University California College of Osteopathic Medicine
Residency: University of Arizona College of Medicine Banner University Medical Center - Phoenix Family Medicine
Research/Clinical Interests: Passionate about teaching and ensuring a supportive learning environment
Hobbies and Personal Interests: Enjoys playing violin and spending time with her husband and son
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Theophilus Ugheghe, MD
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Residency Core Faculty
Medical School: University of Rochester School of Medicine and Dentistry
Residency: Florida Atlantic University
Research/Clinical Interests: Committed to providing high-quality education and mentoring the next generation of physicians. Dr. Ugheghe's clinical philosophy centers on building patient trust and delivering individualized, compassionate care
Hobbies and Personal Interests: Interests include spending quality time with his family, traveling, and cooking
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