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A graduate of Stanford University, he earned his Bachelor's degree in Human Biology, laying a solid foundation for his medical career. His academic pursuits continued at Northwestern University Feinberg School of Medicine, where he earned his medical degree. At Northwestern, Dr. McKenzie's commitment to academic and clinical excellence was recognized through his induction into the prestigious Alpha Omega Alpha Honor Medical Society, an honor that recognizes academic achievements and dedication to the medical profession.

Following medical school, Dr. McKenzie pursued his dermatology residency at New York University. There, he honed his clinical and procedural skills under the mentorship of leading experts in the field. Demonstrating leadership and clinical acumen, he served as Chief Resident in his final year.

Dr. McKenzie is a well-published author, with several publications in reputable dermatology journals, which he has presented at national and international meetings. His research and clinical interests span a broad spectrum, including topics such as eczema, acne, hair loss, and health disparities. His work aims to advance the understanding and treatment of skin conditions and improve patient outcomes.

Beyond his clinical and research contributions, Dr. McKenzie is known for his compassionate patient care and his ability to combine scientific rigor with a personalized approach to treatment. He is an active member of the American Academy of Dermatology and is deeply committed to medical education and the training of future dermatologists.

Dr. Yelyzaveta Prysyazhnyuk is a compassionate and highly trained physician with a strong commitment to advancing mental health care. She brings a rich background in internal medicine and a deep interest in the intersection of physical and mental well-being to her role at Vital Psych MD LLC. Dr. Prysyazhnyuk completed her undergraduate studies at Barnard College of Columbia University before earning her medical degree from SUNY Downstate College of Medicine. She went on to complete her residency in Internal Medicine at the Zucker School of Medicine at Hofstra/Northwell NS/LIJ, where she also obtained certifications as a clinician educator and in lifestyle medicine. At Vital Psych MD, Dr. Prysyazhnyuk is excited to focus her practice on supporting individuals through evidence-based care that bridges the gap between physical and mental health. Her clinical experience and academic foundation have shaped her integrative approach, helping achieving overall well-being and a lasting change.

Gershwin Blyden, MD, PhD, FCP, FACP, is a board-certified hematologist-oncologist and medical director of The Foundation for Sickle Cell Disease Research, with locations in Homestead, Orlando, Lakeland, Jacksonville, Belle Glade, Tallahassee, and Hollywood, Florida. With more than 40 years of diverse experience, Dr. Blyden is an esteemed physician in his field.

After receiving his bachelor’s degree in plant science from the Tuskegee Institute (now Tuskegee University) in Tuskegee, Alabama, in 1967, Dr. Blyden earned a PhD in pharmacology from prestigious Yale University in New Haven, Connecticut, in 1976. Just three years later, he also earned his medical doctorate cum laude from Yale University.

In 1985, Dr. Blyden completed an internal medicine internship at Massachusetts General Hospital in Boston, Massachusetts. That same year, he also finished his hematology/oncology and clinical pharmacology fellowship at Tufts Medical Center in Boston, Massachusetts. 

After graduating and completing his training, Dr. Blyden worked as an adjunct professor for the Barry University School of Podiatric Medicine in Miami Shores, Florida, an associate clinical professor of hematology and oncology at the University of Miami School of Medicine in Miami, Florida, and as an associate professor of clinical pharmacy and director of the Clinical Pharmacology Research Unit at Florida A&M University’s Miami location.

Today, Dr. Blyden is a leader in the field of sickle cell treatment, case management, and research. He provides comprehensive care for chronic diseases, with a special emphasis on sickle cell anemia. 

Dr. Blyden offers a variety of infusion services, school individualized education program (IEP) support, transcranial Doppler ultrasounds, and more.

Meliana Trinidad, MD, is board-certified in neurology and internal medicine. She works with patients at The Neurology Institute in Coral Springs and Sunrise, Florida. Dr.Trinidad is very compassionate and finds it rewarding to provide medical care to patients and assist in their treatment.  Dr. Trinidad is fluent in English and Spanish.  She is able to speak medical Portuguese and Turkish.

Dr.Trinidad received her medical degree from the University of Puerto Rico. After graduating, she went on to complete her residency and fellowship in internal medicine at the Veterans Affairs Medical Center in San Juan, Puerto Rico. 

To further her education, Dr. Trinidad completed her neurology residency at the University of Miami in Coral Gables, Florida, and a fellowship training in neurophysiology/epilepsy.  

She is very passionate about neurology and approaches each patient as an individual.

Dr.Trinidad is currently accepting both new and existing patients at The Neurology Institute in Coral Springs and Sunrise, Florida. She looks forward to providing you with the highest care possible. 

Thomas Nguyen, MD, MS, is a skilled internal medicine and nephrology physician at Nguyen Medical Group in Boynton Beach, Florida. Dr. Nguyen considers it a privilege to serve the community where he grew up. 

Dr. Nguyen started his educational pursuits at the University of Florida in Gainesville, where he completed his Bachelor of Science in microbiology in 2000. After completing his undergraduate studies, Dr. Nguyen earned his Master of Science in molecular genetics and gene therapy in 2002, also from the University of Florida. In 2006, he earned his Doctor of Medicine from Drexel University in Philadelphia, Pennsylvania. 

After completing his studies, Dr. Nguyen returned to his home state of Florida, where he completed his residency and fellowship at UF Health Jacksonville (formerly Shands Jacksonville) in 2011. Shortly after, Dr. Nguyen opened Nguyen Medical Group.

As an experienced physician, Dr. Nguyen understands the importance of strong doctor-patient relationships. At well-visits, he takes great pleasure in learning about the lives of his patients while simultaneously assessing their health. Dr. Nguyen takes great pride in being there for his patients, especially when their health is compromised, so he can be their guiding light, steering them back into good health. 

To schedule an appointment with Dr. Nguyen and the team at Nguyen Medical Group, call the office or book online today.

Medical Doctor since 1985. Specialist in Internal Medicine, Gastroenterology and Hepatology. Fellow of The American College of Physician, Fellow of The American Association for the Study of Liver Diseases. Member of the American Association of Gastroenterology, The American Obesity Association and the ALEH. Unrestricted active Medical License in Florida and Puerto Rico (USA). Fifteen years teaching experience in the Gastroenterology Residency Program at Red Cross Hospital "Carlos J. Bello" Former President of the Hepatology Chapter of the Venezuelan Society of Gastroenterology. Published several papers and held presentation in the field of Gastroenterology and Hepatology. Since 2015 Practicing as a Internal Medicine/Liver Diseases Physician in Palm Beach County, Florida, USA. Medical Director at Bright Future Mental Health , Lake Worth, FL. Civil Surgeon Designation by USCIS

Dr. Yelyzaveta Prysyazhnyuk is a compassionate and highly trained physician with a strong commitment to advancing mental health care. She brings a rich background in internal medicine and a deep interest in the intersection of physical and mental well-being to her role at Vital Psych MD LLC. Dr. Prysyazhnyuk completed her undergraduate studies at Barnard College of Columbia University before earning her medical degree from SUNY Downstate College of Medicine. She went on to complete her residency in Internal Medicine at the Zucker School of Medicine at Hofstra/Northwell NS/LIJ, where she also obtained certifications as a clinician educator and in lifestyle medicine. At Vital Psych MD, Dr. Prysyazhnyuk is excited to focus her practice on supporting individuals through evidence-based care that bridges the gap between physical and mental health. Her clinical experience and academic foundation have shaped her integrative approach, helping achieving overall well-being and a lasting change.

Andrea J. Ramsay, MD, is a skilled primary care physician serving patients from the Plantation, Florida, office of AssociatesMD. 

Dr. Ramsay always had a dream and desire to become a special kind of doctor. Growing up in Miami, Florida, she attended the University of Florida and St. George’s University School of Medicine to begin a lifelong journey and dedication to the medical profession.

As Dr. Ramsay decided on her specialty, she pursued training in Surgery, Emergency Medicine, Trauma, Obstetrics and Gynecology, Plastic Surgery, and then Family Medicine – Family Medicine became her true calling because she could do a little bit of everything.

After spending a year in Buffalo, New York, for a Family Medicine Internship, she returned home to complete her residency at the University of Miami. The Jackson Memorial Hospital experience allowed her to speak medical Spanish fluently. 

Since 2015, Dr. Ramsay has been with AssociatesMD. She has long-term patients who have followed her from the Pembroke Pines office because they feel she has saved and improved their lives in a significant manner and is compassionate in her care. Her patients feel safe and comfortable and appreciate her experience in knowing what works best and shifting when a new approach is necessary. It is a partnership where both parties are involved in caring/healing because neither can happen independently.

Dr. Andrea J. Ramsay is board certified in Family Medicine and has over 25 years of experience. She continues training in Integrative Medicine, including Ayurvedic Medicine, supplements, and herbal medicine, and supports healing in mental health/cognitive behavioral therapy.

Dr. Ramsay’s 3 Basic Principles:

#1.: Golden Rule. “Treat the patient like you want to be treated and treat them like they are family.”
#2. Live a Healthy and Spiritual Life. Don’t just talk the talk but walk the walk.
#3. Keep it simple. “Medicine and Insurance companies can get very complicated. It is my job to be a wise filter. I am here to understand, help diagnose, and treat and provide the best quality care for each and every patient.”

Dr. Cortti Ferrari will be joining the AssociatesMD team soon!

Dr. Maria R. Cortti Ferrari was born in Asunción, Paraguay, and earned her medical degree from the Universidad Nacional de Asunción, completing six years of rigorous training. Her clinical education included rotations at top institutions such as Hospital de Clínicas, Sanatorio Migone, Centro Médico La Costa, and the Centro del Quemado (Burn Center), where she gained valuable experience in both general and specialized care.

In 2005, Dr. Cortti Ferrari moved to the United States, where she later began her U.S.-based medical training. In 2012, she completed a Transitional Year Residency at Sinai Grace Hospital in Michigan, followed by an Internal Medicine Residency from 2014 to 2017. She went on to complete a Nephrology Fellowship at Ascension St. John Hospital in Michigan in 2018.

After finishing her fellowship, Dr. Cortti Ferrari and her family relocated to Florida in 2019, where she initially practiced as a nephrologist. Over time, she recognized the value of integrating her nephrology expertise into a broader scope of care and transitioned to primary care in 2021. Since then, she has been serving her community as a Primary Care Physician, offering comprehensive care with a deep understanding of complex chronic conditions.

Dr. Cortti Ferrari is married to Tadeo, also from Paraguay, and they are proud parents to Enzo (16), Celina (10), and their beloved dog Tito (4). In her free time, she enjoys running, playing the guitar, and being her children’s biggest fan at soccer matches and gymnastics competitions. She is passionate about building long-term relationships with her patients and helping them lead healthier lives through preventive care and compassionate support.

 

Dr. Denise Dvorquez earned her medical degree from the Catholic University of Santiago de Guayaquil in Ecuador in 2007. She began her medical career as a primary care physician in the Galápagos Islands, where she served the local community for one year. Driven by a passion for public health, she was awarded a prestigious Fulbright Scholarship and completed a master's degree in public health at Johns Hopkins University.

Following her graduate studies, Dr. Dvorquez returned to Ecuador to teach at her alma mater before relocating to the United States to pursue her residency in Internal Medicine at Jackson Memorial Hospital/University of Miami. She is board certified in Internal Medicine by the American Board of Internal Medicine and also holds certification from the American Board of Obesity Medicine.

Dr. Dvorquez has since practiced primary care in both Washington State and California, with a strong commitment to preventive care and chronic disease management. Outside of medicine, she enjoys the ocean, outdoor adventures, and camping. She values quality time with her son and loves playing soccer with him. Dr. Dvorquez is bilingual in English and Spanish.