Natasha Morejon, ARNP
DR. RONALD YGLESIAS, M.D.
Natasha Morejon is a board-certified Family Nurse Practitioner since 2015; she has been providing patient care in the areas of Internal Medicine, Rheumatology, Geriatrics, and Women’s Health. She has over 20 years of Critical Care Nursing experience and completed her Master’s Degree at Barry University in Miami. She feels very excited to be part of Dr. Gaylis’ Arthritis and Rheumatic Disease Specialties group, where she will deepen her knowledge and experience to provide more complex patient care.
Natasha was born in Venezuela and has been living in South Florida for over 45 years. She is fully bilingual in Spanish and English which allows her to reach out to the Spanish speaking community. She enjoys the multicultural aspect of the patient/provider relationship prioritizing educating and helping the patient to engage in their process of healing, demonstrating herself to be a trustworthy, compassionate, and knowledgeable provider.


Ronald Yglesias, MD. is a board-certified internal medicine physician and board-eligible rheumatologist who joined Arthritis and Rheumatic Disease Specialties in August 2017. Dr. Yglesias, who was born in Cuba but raised in Miami, is excited to return to his hometown and join our expanding practice. He completed his internal medicine residency at AtlantiCare-Geisenger in New Jersey where he was Chief Resident as well. There he forged strong patient-doctor relationships and he was awarded several distinctions for his commitment to quality and compassionate care. He was actively engaged in several systems wide quality improvement projects as part of the healthcare system’s transition to accountable care organization model. He worked closely with administration and was the liaison member between the training staff and the administrative staff.
He then continued his rheumatology fellowship training at Drexel University in Philadelphia where he was exposed to diverse rheumatological pathologies from those presenting in infancy to adulthood. His fellowship program gave him the opportunity to be exposed to many joint disorders. He had extensive medical training at Abington Memorial Hospital and St. Christopher’s Children Hospital of Philadelphia thus making his fund of knowledge very robust.
Dr. Yglesias serves as a sub Investigator in the many clinical trials which are being conducted at Arthritis and Rheumatic Disease Specialties. These clinical research trials are investigating new medications for use in many of the auto immune disease treated by Dr. Yglesias.
Dr. Yglesias has been a great addition to our practice. He is fluent in Spanish and English, and he also can communicate in Portuguese. He is a proud native who returns to serve his community; a local graduate from Miami Dade College and Florida International University who obtained his medical degree from Universidad Iberoamericana. Currently his professional focus is on obtaining fellowship member status with both the American College of Physicians and the American College of Rheumatology.