Faculty

Brief Bio

Michael Castro, MD, FACP
Michael Castro, MD, FACP

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

Leigh Holdsworth
Leigh Holdsworth BHSc, MSc, MD

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.

Nimit A Patel, MD

Nimit A Patel, MD

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

Pedro Rodriguez Guggiagi, MD, FACP
Pedro Rodriguez Guggiagi, MD, FACP

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

aya Stamm, MD, FAAP
Maya Stamm, MD, FAAP

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 

Alina Danciu, MD
Alina Danciu, MD

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

Baharak Tabarsi, MD, FAAFP
Baharak Tabarsi, MD, FAAFP

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

Heather Merchut, DO
Heather Merchut, DO

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

Theophilus Ugheghe, MD
Theophilus Ugheghe, MD

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