Board of Directors
Sara I. Diaz Valentin, MD, MSC, FPMRS, FACOG
Founder & President
Born and raised in Puerto Rico, Dr. Diaz is a urogynecologist with a thriving practice in Richmond, Indiana where she is the Medical Director of Women’s Health services at Reid Health.
Linka Matos, MD, JD
Dr. Linka Matos Rivera is an anesthesiologist specialized in interventional pain management, regenerative medicine, acupuncture, and traditional Chinese herbal medicine.
Carolina E. Reveron-Arias, MD
Born and raised in the northwest municipality of Isabela, Puerto Rico. Dr. Reveron is a recent Boston transplant, where she’s completing her Diagnostic Radiology Residency at Tufts Medical Center.
Karen Caraballo Psy.D.
Chief Executive Officer
Brooklyn, New York
Born and Raised in Puerto Rico Dr. Karen Caraballo is a New York City Bilingual Clinical Psychologist in private practice. She has extensive experience with Latino Immigrant Families.
Chief Financial Officer
New York, New York
Migna Guzman is an independent
San Juan, Puerto Rico
Guaynabo, Puerto Rico
Michelle Ramírez, MD
Brooklyn, New York
Dr. Ramírez lives in Brooklyn, NY. She is a Pediatric Critical Care physician and founder of Dream Vibrant Health.
Fajardo, Puerto Rico
Born in Mayaguez, Puerto Rico, Beatriz is an accountant by profession who has emigrated back to PR from New Jersey. She attended the University of Maryland-University College, where she graduated with a master’s degree in Accounting and Financial Management. Her passion is non-profit work and yoga.
Chief Development Officer
Margie Gerena Lewis, MD
Margie Gerena Lewis, MD is a mother of two and a physician living in Akron, Ohio. She has done volunteer medical and non-medical missions to Ecuador, El Salvador, and Haiti. The Coqui Education Program stems from her idea of “Adopt-A-School Program” where individuals, organizations, or corporations can adopt a school of their choice to help design a needed program.
Mildred J. Perea, MD
Social Media Coordinator
Puerto Rican Pediatrician practicing in Tampa, Florida. She is a mother of two and creator of Chronicles of a Juggling Mom.
“I have joined PRRU to be able to give back to my community and see my fellow Puerto Ricans thrive.”
Chief Operational Officer