Med Peds Fellows

Juliana Barahona Sparks, MD

Pediatric Program Leadership

Chryso Katsoufis, MD
Nicole Torres, MD
Liz Bayes Santos, MD

Med Peds Faculty

Toni Eyssallenne, MD PhD

Program Director, Internal Medicine-Pediatrics Residency, UM/JMH
Assistant Professor of Internal Medicine and Pediatrics, UM/JMH
Program Director, Pediatric Residency, Hospital Bernard Mevs/Hospital St. Damian, Haiti
Director of Intensive Care Unit, Hospital Universitaire Mirabalais, Haiti

Medical and Graduate School: Rochester University College of Medicine
Residency:  Med-Peds – Jackson Health System
Chief Residency: Med-Peds – Jackson Health System

Toni Eyssallenne is a Haitian-American physician and a graduate of the 2010 JMH Med-Peds Residency Program.   The Jackson Health System is located in the heart of Miami and as the county hospital provides care for the undeserved and the “never served” including the neighborhood of Little Haiti.  In February of 2010, an earthquake demolished Haiti at its core and capital Port au Prince.  At the core of our joint missions at JHS and UM is providing service to our community. Many of our faculty, staff, students and housestaff are of Haitian descent and were hard hit by the devastation in their home country. Haiti is part of our community.  Toni was amongst the first responders to arrive in Port au Prince.  She spent her 4th year research elective month working as the acting Chief Medical Officer (CMO) in the UM medical tents. Due to her superb performance during the post-earthquake disaster, she was appointed as the Chief Medical Officer for Project Medishare and Hospital Bernard Mevs. 

She joined our Med-Peds Faculty in 2011, as our Associate Program Director and Director of our Med-Peds Global Health Track while continuing to work as the CMO at Bernard Mevs.  She is the co-creator and Program Director of the Pediatrics Residency Program at Hospital Bernard Mevs and Nos Petite Frere et Soeur/Hospital St. Damian’s, the only free standing children’s hospital in Haiti.  In 2014, Toni was recruited by Partners in Health to become the Director of the ICU at their new hospital, Hospital Universitaire de Mirabalais. Toni is an avid New York Giants fan and often uses FaceTime from Haiti to talk about a game.

Stefanie Brown, MD FACP FAAP

Program Director, Internal Medicine Residency Program
Vice Chair for Education, Internal Medicine
Assistant Dean for Diversity and Multicultural Affairs
Assistant Professor of Medicine and Pediatrics

Medical School: University of Cincinnati College of Medicine
Residency:  Med-Peds – Rutgers - New Jersey Medical School
Chief Residency: Primary Care Chief Resident – Rutgers – New Jersey Medical School 

When asked to choose between Medicine and Pediatrics, her answer is simple: “I would choose both; I like both equally.”  Her academic life follows the same vein.  The variety of her administrative, clinical, educational, mentorship and research responsibilities inspire and motivate her, and she has a true passion for each.  Dr. Brown calls it “The Med-Peds Curse” –we enjoy everything, all of the time.  She feels lucky to work in an institution where she is given freedom to explore and encouragement for innovative.

This philosophy of innovation and exploration carries over to our program philosophy where our strength lies in the diversity of our residents, faculty, community and education.  Residents are encouraged to actively participate in development of curriculum and out of this were born options for several tracks, including Women’s Health, Hospital Medicine and Global Health.  Our global health track began in 2011 and has evolved to include 4 different Global Health Career Pathways and our Hospitalist Med-Peds and Med-Peds Primary Care tracks are being formalized this year.

In addition to being a PD, Dr. Brown is also one of the Assistant Deans for Diversity and Multicultural Affairs with the responsibility for creating a learning environment that encourages and celebrates institutional diversity.  This includes mentorship of Pre-Med undergraduate students from underrepresented minority groups and any medical student group based in culture, ethnicity, religion, gender or sexual orientation.  In 2013-14 she is successfully worked with faculty and students from the LGBTQ student organization, “MedicOUT”, to create a Safe Space Program which will be highlighted at the 2014 AAMC annual meeting.  This program is expanding and this year the group is working on a new longitudinal curriculum for LGBTQ education to include didactics and an elective rotation in Transgender medicine and surgery.

On a personal note, Dr. Brown lives in South Beach, facing downtown Miami and Biscayne Bay, where the multitude of extracurricular activities available is only out measured by the beauty of her surroundings. In her time off, she belongs to a dinner club that meets every Monday night and on the weekends she enjoys outdoor activities such as biking, lying on the beach and searching for that magical 8th day in the week. 


Abiona Redwood, MD

Clinical director of the Med-Peds Clinic 

Medical School:  Duke University School of Medicine
Residency: Med-Peds - Jackson Health System


Matthew Imm, MD

Med Peds hospitalist 

Medical School:  Ohio State University School of Medicine
Residency: Med-Peds - Jackson Health System

Edgardo Rivera Rivera, MD

Pediatric Gastroenterology 

Medical School:  Ponce School of Medicine
Residency: Med-Peds - Jackson Health System
Fellowship: University of Chicago Pritzker School of Medicine

Other Faculty

Stephen Symes, MD FACP

Former Internal Medicine Residency Program Director
Assistant Dean for Diversity and Multicultural Affairs
Assistant Dean for Graduate Medical Education

Medical School:  Howard University
Residency: Internal Medicine- Jackson Health System
Chief Residency: Internal Medicine – Jackson Health System/Miami VA Medical Center 

Dr. Stephen Symes is an Associate Professor of Medicine in the Division of Infectious Diseases with the University of Miami Miller School of Medicine. He completed medical education at Howard University in 1989 and residency training in Internal Medicine at Jackson Memorial Medical Center in 1992. He served as Chief Medical Resident at the VA Medical Center in Miami, joined the faculty of the Department of Medicine in 1994, started as Associate Program Director of the Internal Medicine residency program in 1997, and was promoted to Program Director in June 2006.

Dr. Symes has clinical activities in HIV and AIDS. As Program Director for the Jay Weiss Residency in Global Health and Social Medicine (beginning in 2005), he developed a pathway to train future physician leaders in global/domestic health program administration and advocacy, preparing them to effect change in health/social policy. 

As program director for the core Internal Medicine residency training program, Dr. Symes focused on post-graduate resident education, emphasizing career development and mentoring. With his work in HIV and social medicine he continues to address health disparities and vulnerable populations, starting a Human Rights clinic at San Juan Bosco clinic for victims of torture and abuse. Appointed as Assistant Dean for Diversity and Multicultural Affairs in December 2010, Dr. Symes will continue to work with the Miller School of Medicine in building a robust, culturally diverse workforce in healthcare.

Yvonne Diaz, MD FACP

Associate Program Director, Internal Medicine
Assistant Dean for Graduate Medical Education
Chief Academic Officer, UHealth-University of Miami Health System 

Medical School: University of Miami Miller School of Medicine
Residency:  Internal Medicine - Jackson Memorial Hospital, University of Miami

Dr. Diaz, whose father was a Cuban expatriate executive, was born in Ohio but grew up in Brazil, Venezuela, Argentina and Miami. She has an undergraduate degree from Drew University, completed her medical degree at the Miller School of Medicine in 1997 and her Internal Medicine Residency in 2000.  She joined the faculty immediately after residency, adding the role of Associate Program Director in 2004.  In a recent article from UHealth News, Dr. Diaz “credited the mentors she encountered during her own residency, as well as the diversity and breath of the Miller School graduate medical education program, for her decisions to pursue a career in academic medicine at UM.”  Her leadership skills and knowledge of graduate medical education led to her appointment in 2012 as the Chief Academic Officer at the University of Miami Hospital.

Joshua Lenchus, DO Rph FACP SFHM

Associate Program Director, Internal Medicine
President, Jackson Health System Medical Staff
Associate Director, UM-JMH Center for Patient Safety
Medical Director, JMH Medicine Consult Service
Clinical Assistant Professor, University of Florida College of Pharmacy Clinical Instructor of Pharmacy Practice, Palm Beach Atlantic University Gregory School of Pharmacy 

Medical School: Nova Southeastern University College of Osteopathic Medicine
Residency:  Internal Medicine - Jackson Memorial Hospital, University of Miami

Dr. Lenchus has been involved in legislative advocacy and public policy for a number of state and national medical organizations, speaks on a number of health policy-related issues, and is a senior fellow of the Center for Medicine in the Public Interest.  He serves as the President of the Jackson Health System Medical Staff, Associate Director of the UM-JMH Center for Patient Safety and Associate Program Director for Jackson Memorial Hospital’s Internal Medicine residency. He also is an Associate Professor of Clinical Medicine at the University Of Miami Miller School Of Medicine. His interests are medical education, simulation, bedside procedural instruction, patient safety, healthcare public policy, and venous thromboembolism. He has presented locally, regionally, and nationally, and has been published in many of those disciplines. In 2007, Dr. Lenchus was elected Fellow of the American College of Physicians and more recently elected a Senior Fellow in Hospital Medicine. 

Pat Caralis, MD JD

Associate Program Director, Internal Medicine
Integrated Ethics Program Officer at the Miami VAMC 

Medical School:  University of Miami Miller School of Medicine
Law School: University of Miami School of Law
Residency: Internal Medicine – Jackson Health System

Dr. Caralis is a triple graduate of the University of Miami from which she received her BS, MD and JD degrees. She joined the UM faculty in 1979 and was one of the first female faculty member to be promoted to full professor.  Her current appointments include Integrated Ethics Program Officer at the Miami VAMC.  She was the former director of postgraduate education and CME programs for the Department of Medicine at UM and former Chair of the Bioethics Committee of Jackson Memorial Hospital.  Dr. Caralis has taught courses at both the medical and law schools in ethics and health law and has published research which spans both disciplines.  She received the Department of Veterans Affairs Award for academic Excellence in recognition of the outstanding contributions and achievement in education of health care professionals.  Dr. Caralis has served as a member of the Dade County Domestic Violence Fatality review board and is a member of the Domestic Violence and Sexual Assault council of Greater Miami. She continues to use her dual degrees for patient advocacy work, with the opening of HEAL, or Health Education Advocacy Legal Clinic. This program is a joint venture between the Miami VAMC and the UM School of Law and includes 24 lawyers from UM and 40 doctors from the VA who join forces to help America’s Veterans.  

Jessica Zuleta, MD

Associate Program Director, Internal Medicine
Assistant Professor of CLinical Medicine
Internal Medicine Residency Site Director of University of Miami Hospital

Medical School: University of Miami Miller School of Medicine
Residency: Internal Medicine - Jackson Health System

Dr. Zuleta is an associate program director of the Jackson Memorial/ University of Miami Internal Medicine residency training program; she is also site director of the Internal Medicine residency training program at University of Miami Hospital. She is a graduate of the University of North Carolina Faculty Development Fellowship at Chapel Hill. She has served on the Society of Hospital Medicine (SHM) Education Committee and has given lectures for SHM Maintenance of Certification review course with an emphasis on Hospital Medicine.  She is a member of the Academy of Medical Educators at the University of Miami. Her interests include medical education, faculty development, and mentoring. 

Med Peds Fellows



Juliana Barahona-Sparks, MD

Fellowship: Combined Pulmonology – Jackson Health System

Medical School: Central del Caribe School of Medicine
Residency: Med-Peds - Jackson Health System 

Luz “Juliana” Barahona-Sparks was born and raised in Colombia.  She moved to the Sunshine state in 2001 attending Florida Atlantic University where she obtained a B.S. in Biology and minor in Spanish and Latin-American Literature.  She attended Medical School at Universidad Central del Caribe.  During medical school she had the opportunity to work in clinical research in Leukemia and BMT, which awakened her desire to pursue a career focusing on the long term care of patients with hematological malignancies and post-BMT.  Her areas of interest are transitional care for chronically ill children and young adults, and patient advocacy.  She is the first Combined Fellow in the Jackson Health System and is pursuing a Combined Pulmonology Fellowship. 

Winnie Szeto, MD

Fellowship:  Adult Gastroenterology – Jackson Health System

Undergraduate:  Brown University
Residency: Med-Peds – University of Maryland 

Winnie grew up in a small town, Southboro, Massachusetts. She eventually ended up at Brown University for College and returned to Boston to attend Tufts University School of Medicine. After four great years in Boston, she moved to Baltimore, Maryland to join the University of Maryland Med-Peds training program.  Winnie realized that her Med-Peds training would enable her to help facilitate the transition of Inflammatory Bowel Disease patients from adolescence to adulthood. After fellowship, Winnie hopes to ease the transition of these patients from Pediatric to Adult GI care.