Our Investigators

Mark H. Kagen, M.D., FAAD

headshot-kagenDr. Kagen is originally from New York. After graduation from Columbia University, he completed his medical internship at Yale-New Haven Hospital in New Haven, Connecticut. He then completed his residency at Case-Western Reserve University, Department of Dermatology in Cleveland, Ohio. Dr. Kagen received his fellowship as a Clinical Scholar at The Laboratory for Investigative Dermatology at Rockefeller University in New York. Dr. Kagen moved to Naples, Florida in November of 2006 to join Riverchase Dermatology. Dr. Kagen is a member of The American Academy of Dermatology and The International Academy of Cosmetic Surgery.

Dr. Kagen specializes in General Dermatology and Dermatologic surgery.

  • Columbia University, B.A.
  • Columbia University, M.D.
  • Case Western Reserve University Dermatology Residency.
  • Rockefeller University, New York-Investigative Dermatology Fellowship
  • Board Certified by the American Board of Dermatology


Ryan S. Jawitz, D.O., FAOCD, FAAD

headshot-jawitzDr. Jawitz is a board certified dermatologist with extensive training in the diagnosis and treatment of diseases of the skin, hair and nails. Dr. Jawitz specializes in dermatologic surgery and Mohs surgery for skin cancer and abnormalities affecting the skin and has years of surgical experience and excellent results. He is also skilled in cosmetic procedures and rejuvenation techniques using Botox, Juvederm, Restylane, Radiesse and Sculptra. Throughout his career, Dr. Jawitz has contributed research and presentations to several peer reviewed journals and associations. His background includes experience as a clinical instructor in the department of Internal Medicine at Michigan State University and is currently an adjunct faculty at Lake Erie College of Osteopathic Medicine. His comprehensive background of performing a variety of complex procedures adds to the level of excellence you can expect from the caring providers at Riverchase Dermatology and Cosmetic Surgery.


  • General Dermatology
  • Dermatologic Surgery
  • Mohs Surgery
  • Cosmetic Dermatology


  • Bachelor of Science, Biology with honors- University of Kentucky, Kentucky
  • Medical Training, Lake Erie College of Osteopathic Medicine, Florida
  • Dermatology Residency- Michigan State University, Michigan

Accreditations and Professional Memberships

  • American College of Osteopathic Dermatology
  • American Academy of Dermatology
  • American Society for Mohs Surgery
  • American Osteopathic Association
  • Florida Osteopathic Association
  • Sarasota Dermatological Society


Charles Camisa, M.D., FAAD

headshot-charles-camisaDr. Camisa has practiced medicine for over 30 years and received his medical training at Mt. Sinai School of Medicine in New York. He completed his dermatology residency at NYU Skin and Cancer Department where he served as chief resident. He later served as director of the Division of Dermatology at Ohio State University where he performed basic and clinical research on lichen planus and psoriasis, graduate education, and patient management. He next served as vice-chairman of the Department of Dermatology at The Cleveland Clinic Foundation and director of the residency program from 1987 to 2001. Dr. Camisa is board certified in dermatology and dermatological immunology.

Dr. Camisa is currently the Director of the Phototherapy Department at Riverchase Dermatology and an Affiliate Associate Professor of Dermatology at the University of South Florida in Tampa. He specializes in psoriasis, lichen planus, bullous diseases, connective tissue diseases, cutaneous T-cell lymphoma, and diseases of the mouth and lips. Dr. Camisa is a leading expert in psoriasis, bullous disease, and other complex skin conditions, and patients throughout the country seek his experience.

He serves on the editorial board of Cutis and is a reviewer for eight other specialty journals. He is the author of over 140 peer-reviewed articles and textbook chapters on skin and oral diseases and is editor of three textbooks on psoriasis. He has also been voted one of the “Best Doctors in America.” Dr. Camisa is the founder of the “Camisa Disease” which is a rare genetic variant of Vohwinkel’s Syndrome.


  • Cornell University, B.S.
  • Mount Sinai School of Medicine, MD
  • New York University Medical Center, Residency

Accreditations and Professional Memberships

  • Board Certified by the American Board of Dermatology
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