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Availability last updated 04/10/2026
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.
Gershwin T Blyden Md Pa
Internist
3677 Central Avenue
Suite H
Fort Myers, FL 33901
Dr. Ronoel Penalver is a board-certified Internal Medicine physician serving patients at FSCDR’s Hollywood, Florida location. He provides comprehensive care focused on prevention, chronic disease management, and improving long-term health outcomes for individuals living with sickle cell disease.
In addition to his clinical work, Dr. Penalver contributes to clinical research efforts that support the advancement of treatment options and patient care. He is committed to delivering compassionate, evidence-based care while helping expand access to innovative therapies and medical resources for the communities FSCDR serves.
Ronoel Penalver, MD
Family Physician
3677 Central Avenue
Suite H
Fort Myers, FL 33901
Dr. Kennessa Hugger is a physician serving patients across FSCDR’s North Florida locations, including Tallahassee, Jacksonville, Pensacola, and Panama City. She is dedicated to providing compassionate, patient-centered care to individuals living with sickle cell disease, with a focus on improving health outcomes through education, prevention, and comprehensive treatment support. Dr. Hugger is committed to ensuring patients throughout North Florida have access to quality care and resources close to home.
Kennessa Hugger, MD
Pediatrician
3677 Central Avenue
Suite H
Fort Myers, FL 33901
About Us
The Foundation for Sickle Cell Disease Research (FSCDR) is a renowned organization solely focused on medical care and clinical research opportunities for those living with Sickle Cell Disease. FSCDR has locations across the State of Florida. Its Flagship is in Hollywood, Florida.
As the only organization in the United States with standalone sickle cell Centers of Excellence, The Foundation for Sickle Cell Disease Research welcomes patients from all over the world. The team of physicians, specialists, care coordinators, case managers, and social work professionals combine to provide all-inclusive care for children and adults with sickle cell disease.
Their stated mission is to tirelessly research, inform, hear, respect, treat, and support all individuals with sickle cell disease, and to make the disease a livable, non-threatening condition. In addition, they do innovative diagnostic testing, such as transcranial Doppler ultrasounds, X-rays, and medical treatments, including infusion services.
The team at The Foundation for Sickle Cell Disease Research works with other medical and education professionals to ensure that their patients of all ages receive the care and support they need to thrive, ranging from vaccinations to medication management and social work services.
Along with school individualized educational plan (IEP) support, disability application assistance, and case management, they help patients work through the social determinants of health to ensure patients receive the proper support they need.
To schedule an appointment with The Foundation for Sickle Cell Disease Research, call or book online today.
Kayvan Amini, DO
Internist
3677 Central Avenue
Suite H
Fort Myers, FL 33901
Jessica Maitre, DNP, APRN
Family Physician
12450 Brantley Commons Court
Fort Myers, FL 33907
George is a board-certified physician assistant, specializing in dermatology since 2017. Originally from New England, he graduated from Stonehill College with a Bachelor of Science in Neuroscience. He subsequently spent several years working as a dermatology medical assistant prior to obtaining his Master of Science in Physician Assistant Studies from MCPHS University. He continued to strengthen his education by completing one of the only dermatology fellowship programs available for physician assistants.
George conducts his skin exams utilizing dermoscopy. He enjoys educating patients and strives to provide the best experience possible for each visit. His dermatologic interests include surgical excisions, as well as the management of skin cancers, acne, and various dermatoses.
George enjoys tennis, traveling, skiing, and spending time with his wife and dogs.
Education
Professional Certifications and Licensures
Professional Affiliations
George Anderson
Physician Assistant
8381 Riverwalk Park Blvd
Suite 101
Fort Myers, FL 33919
Christal DiMarco, PA-C is a board-certified Physician Assistant who joined Associates in Dermatology in 2019. As a Florida native she chose to attend Florida State University for her Associates degree and went on to Florida Gulf Coast University to major in Biology and minor in Chemistry. She attended Nova Southeastern University for her Master of Medical Science and became a board-certified Physician Assistant in 2010.
Christal has been working in Cape Coral, Florida as a Physician Assistant, specializing in dermatology for the last 13 years. She enjoys performing full skin evaluations as well as treating acne and warts. She is experienced in the diagnosis and treatment of skin cancer, rashes, autoimmune disorders and other dermatologic conditions. She encourages patients to use sun protective methods while enjoying Florida’s beautiful outdoors.
Christal DiMarco PA-C is now accepting new patients at Associates in Dermatology under the direct supervision of Keith Benbenisty, MD and Scott Crater, MD. Christal sees adults and pediatric patients for most all dermatologic conditions.
Education
Professional Affiliations
Christal Dimarco, PA
Physician Assistant
8381 Riverwalk Park Blvd
Suite 101
Fort Myers, FL 33919
Stina McKenna, PA-C is a board-certified Physician Assistant who joined Associates in Dermatology in 2017. She earned her Bachelor of Science in behavioral neuroscience and minor in marine biology from Northeastern University in Boston, MA and then completed her Master of Medical Science degree at Tufts University School of Medicine in Boston, MA, where she graduated with summa cum laude academic standing.
Stina continued her training by working with several board-certified dermatologists and Mohs surgeons in the Greater Boston area to hone her skills to execute a variety of dermatologic surgical procedures. Stina was also awarded Diplomate Fellowship status with the Society of Dermatology Physician Assistants (SDPA) – representing the highest level of training for a Dermatology PA.
Stina takes pride in conducting thorough skin examinations utilizing dermoscopy. She believes in taking the time necessary to educate her patients on their diagnoses and address all their questions and concerns. Stina emphasizes the importance of sun protection and formulates healthy skin care regimens for each of her patients.
Stina McKenna, PA-C is accepting new patients at Associates in Dermatology at the Fort Myers, Cape Coral, and Punta Gorda offices. She works closely and in collaboration with Dr. Shari Skinner, MD and Dr. Laertes Manuelidis, MD to ensure her patients receive the highest quality of care. She sees adult and pediatric patients for all conditions of the hair, skin, and nails.
Education
Professional Affiliations
Professional Certifications and Licensures
Stina McKenna, PA-C
Physician Assistant
8381 Riverwalk Park Blvd
Suite 101
Fort Myers, FL 33919
Stina McKenna, PA-C is a board-certified Physician Assistant who joined Associates in Dermatology in 2017. She earned her Bachelor of Science in behavioral neuroscience and minor in marine biology from Northeastern University in Boston, MA and then completed her Master of Medical Science degree at Tufts University School of Medicine in Boston, MA, where she graduated with summa cum laude academic standing.
Stina continued her training by working with several board-certified dermatologists and Mohs surgeons in the Greater Boston area to hone her skills to execute a variety of dermatologic surgical procedures. Stina was also awarded Diplomate Fellowship status with the Society of Dermatology Physician Assistants (SDPA) – representing the highest level of training for a Dermatology PA.
Stina takes pride in conducting thorough skin examinations utilizing dermoscopy. She believes in taking the time necessary to educate her patients on their diagnoses and address all their questions and concerns. Stina emphasizes the importance of sun protection and formulates healthy skin care regimens for each of her patients.
Stina McKenna, PA-C is accepting new patients at Associates in Dermatology at the Fort Myers, Cape Coral, and Punta Gorda offices. She works closely and in collaboration with Dr. Shari Skinner, MD and Dr. Laertes Manuelidis, MD to ensure her patients receive the highest quality of care. She sees adult and pediatric patients for all conditions of the hair, skin, and nails.
Education
Professional Affiliations
Professional Certifications and Licensures
Stina McKenna, PA-C
Physician Assistant
14 Del Prado Blvd N
Suite 301
Cape Coral, FL 33909
Christal DiMarco, PA-C is a board-certified Physician Assistant who joined Associates in Dermatology in 2019. As a Florida native she chose to attend Florida State University for her Associates degree and went on to Florida Gulf Coast University to major in Biology and minor in Chemistry. She attended Nova Southeastern University for her Master of Medical Science and became a board-certified Physician Assistant in 2010.
Christal has been working in Cape Coral, Florida as a Physician Assistant, specializing in dermatology for the last 13 years. She enjoys performing full skin evaluations as well as treating acne and warts. She is experienced in the diagnosis and treatment of skin cancer, rashes, autoimmune disorders and other dermatologic conditions. She encourages patients to use sun protective methods while enjoying Florida’s beautiful outdoors.
Christal DiMarco PA-C is now accepting new patients at Associates in Dermatology under the direct supervision of Keith Benbenisty, MD and Scott Crater, MD. Christal sees adults and pediatric patients for most all dermatologic conditions.
Education
Professional Affiliations
Christal Dimarco, PA
Physician Assistant
14 Del Prado Blvd N
Suite 301
Cape Coral, FL 33909
George is a board-certified physician assistant, specializing in dermatology since 2017. Originally from New England, he graduated from Stonehill College with a Bachelor of Science in Neuroscience. He subsequently spent several years working as a dermatology medical assistant prior to obtaining his Master of Science in Physician Assistant Studies from MCPHS University. He continued to strengthen his education by completing one of the only dermatology fellowship programs available for physician assistants.
George conducts his skin exams utilizing dermoscopy. He enjoys educating patients and strives to provide the best experience possible for each visit. His dermatologic interests include surgical excisions, as well as the management of skin cancers, acne, and various dermatoses.
George enjoys tennis, traveling, skiing, and spending time with his wife and dogs.
Education
Professional Certifications and Licensures
Professional Affiliations
George Anderson
Physician Assistant
14 Del Prado Blvd N
Suite 301
Cape Coral, FL 33909
Duron Lee, MD
Family Physician
4304 Del Prado Blvd S
Cape Coral, FL 33904
Remberto Lopez, MD
Family Physician
949 Chiquita Blvd S
Cape Coral, FL 33991
Christal DiMarco, PA-C is a board-certified Physician Assistant who joined Associates in Dermatology in 2019. As a Florida native she chose to attend Florida State University for her Associates degree and went on to Florida Gulf Coast University to major in Biology and minor in Chemistry. She attended Nova Southeastern University for her Master of Medical Science and became a board-certified Physician Assistant in 2010.
Christal has been working in Cape Coral, Florida as a Physician Assistant, specializing in dermatology for the last 13 years. She enjoys performing full skin evaluations as well as treating acne and warts. She is experienced in the diagnosis and treatment of skin cancer, rashes, autoimmune disorders and other dermatologic conditions. She encourages patients to use sun protective methods while enjoying Florida’s beautiful outdoors.
Christal DiMarco PA-C is now accepting new patients at Associates in Dermatology under the direct supervision of Keith Benbenisty, MD and Scott Crater, MD. Christal sees adults and pediatric patients for most all dermatologic conditions.
Education
Professional Affiliations
Christal Dimarco, PA
Physician Assistant
3665 Tamiami Trail
Suite 104
Punta Gorda, FL 33950
