260 Middle Country Rd., Suite 208
Smithtown NY 11787
Marina I. Peredo, M.D., P.C.
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Dr. Tamara Koss, Smithtown, Long Island

Tamara Koss M.D., F.A.A.D.

Dr. Tamara Koss is certified by the American Board of Dermatology and is a fellow of the American Academy of Dermatology. She practices general and pediatric dermatology and dermatologic surgery. Dr. Koss has advanced training in cosmetic and laser surgery of the skin.

Dr. Koss graduated magna cum laude with highest honors in psychology from Harvard University. While at Harvard, she was elected to the Phi Beta Kappa honor society. Dr. Koss received her M.D. degree with honors from the Yale University School of Medicine, where she was elected to the Alpha Omega Alpha medical honor society. She completed her internal medicine internship at Long Island Jewish Medical Center and her dermatology residency at Columbia University, where she served as chief resident. She then completed a one-year cosmetic dermatology fellowship at the Boston Dermatology and Laser Center, a practice affiliated with Massachusetts General Hospital.

Dr. Koss has published numerous articles in leading medical journals and has coauthored two book chapters. She has given talks at national dermatology meetings and has done collaborative research with the Centers for Disease Control and Prevention. Dr. Koss is an attending physician at Columbia-Presbyterian Medical Center and Huntington Hospital. She is a native Spanish speaker.

Dr. Michael Fastenberg, dermatologist, smithtown, new york

Michael Fastenberg, M.D., F.A.A.D.

Dr. Fastenberg is a native of Long Island. He went to Jericho High School and attended Harvard University’s summer program. He received his undergraduate degree from Duke University (cum laude). After living and working in various places around the world he returned to Long Island to pursue a career in medicine. He graduated from the Stony Brook School of Medicine (Alpha Omega Alpha). He completed his internship in Internal Medicine at Winthrop University Hospital in Mineola, NY and completed his dermatology residency at The University of North Carolina Hospitals in Chapel Hill, NC. His interest in infectious diseases led him to Sao Paulo, Brazil for an international elective.

Dr. Fastenberg returned to Long Island where he now resides with his wife and three children. He has performed research in biochemistry, cell biology and dermatology, has been published in peer reviewed journals and has presented at local and national meetings. Dr. Fastenberg specializes in general adult, pediatric and surgical dermatology and has developed an interest in cosmetic dermatology performing botox injections, fillers and laser procedures as well. He is board certified in dermatology by the American Board of Dermatology and is on faculty at St. Catherine of Siena Medical Center in Smithtown, NY.



Ilse Strauss, Physician Assistant, in practice with Dr. Marina Peredo

Lynnette Allen, NP

Lynnette Allen is a Board Certified Nurse Practitioner with over 27 years’ experience as a nursing professional. She began her career in nursing as an acute cardiac care nurse at NYU Medical Center before deciding to transfer into emergency medicine. Lynnette practiced in a level I trauma unit for over 15 years and also developed and implemented forensic guidelines for chain of evidence in police matters. Her clinical experience is broad and comprehensive and also includes cosmetic hair transplantation for 10 years, conscious sedation, and in house operating. Her practice is now in dermatology with a concentration in acne, hair loss, and skin cancer screening.

Lynnette received her B.S.N from New York University and her Masters of Science in Nursing and Nurse Practitioner Degree from Molloy College where she graduated with honors.

Ilse Strauss, RPA-C

Ilse Strauss is Board-Certified by the National Commision of Certification of Physician Assistants. Ilse received a Bachelor of Science Degree in Physician Assistant Studies from The State University of New York at Stonybrook and graduted with distinction. She is a Fellow of The American Academy of Physician Assistants and a member of the Society of Dermatology Physician Assistants. Ilse Strauss is co-founder and president of The New York State Society of Dermatology Physician Assistants. Ilse specializes in all aspects of general dermatology. Her years of experience in aesthetic dermatology makers her a skilled provider in advance techniques in cosmetic fillers and Botox®. Her fluency in Spanish allows extended dermatological care for the community. Ilse's passion for her work is reflected in her outstanding patient care.


Susan M. Conaty RPA-C

Susan Conaty is Board Certified by the National Commission of Certification of Physician Assistants.  Susan received a Bachelor of Science Degree in Biology from Bucknell University and completed the Physician Assistant Program at the United States Public Hospital Program in Staten Island, New York.  She is a Fellow of the American Academy of Physician Assistants as well as the Society of Dermatology Physician Assistants.  Susan has specialized in all aspects of general dermatology for the last ten years.  She was previously employed in the Internal Medicine Department at the State University Hospital at StonyBrook, where she obtained invaluable experience in the Allergy and Immunology Department as well as the Lyme Disease Center.

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