About Us

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Our physicians all completed dermatology residencies and are board-certified by the American Board of Dermatology. They are highly skilled and have decades of experience practicing dermatology.

Board-Certified Dermatologists

Meet our Physicians

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Todd Bessinger, MD PhD

Glenn Todd Bessinger M.D. Ph.D. is the founder of Hawaii Dermatology Centers. He is a board-certified dermatologist and specializes in skin cancer surgery and laser treatments. He received his M.D, M.P.H., and Ph.D. and from Tulane University. He is a U.S. Army veteran and was the Chief of Dermatology at Tripler Army Medical Center in Honolulu before establishing the practice. Dr. Bessinger has served as President of the Hawaii Dermatology Society and has been named one of Honolulu Magazine’s Best Doctors in Hawaii for the past 10 years. He is an avid runner and high-school cross-country coach.

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Sarah Howell, MD

Sarah M. Howell, M.D. is a board-certified dermatologist who specializes in medical dermatology. She manages clinical research studies for psoriasis and eczema. Dr. Howell earned her MD from Georgetown University and completed her residency at Walter Reed Army Medical Center. She served as a dermatologist in the US Army prior to joining Hawaii Dermatology Centers in 2012. Dr. Howell has been named one of Honolulu Magazine’s Top Doctors annually since 2015 and has served as the President of the Hawaii Dermatological Society. In her free time, she enjoys playing with her three children, yoga, reading, sewing and painting.

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Rebecca Luria, MD

Rebecca Luria M.D. is a board-certified dermatologist and specializes in general dermatology. She earned her MD from Georgetown University. While serving in the U.S. Army, Dr. Luria taught dermatology at the Uniformed Services University of the Health Sciences and has served as Chief of Dermatology at Fort Drum, NY and at Fort Meade, MD. She is currently serves as the President of the Hawaii Dermatology Society. Dr. Luria has been practicing in Kailua since leaving the Army in 2011. She enjoys reading, painting, and hiking with her husband and three children.

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Tom Crabtree, MD FACS

Thomas G. Crabtree, M.D. FACS is a board-certified plastic and reconstructive Surgeon. He earned his undergraduate degree from Harvard University and his MD from Stanford University. He served for 24 years as a surgeon in the US Army and was Chief of Plastic Surgery as well as Consultant to the Surgeon General for Plastic Surgery during his tenure. Dr. Crabtree has served as president of the Hawaii Plastic Surgery Society. He has been named one of the Best Doctors in Hawaii by Honolulu Magazine and the Hawaii Business News for each of the past 20 years. Dr. Crabtree is available to assist with closures of the face, ears, and other aesthetically sensitive areas.

Physician Assistants

Our physician assistants have post-graduate training with years of experience working in dermatology under the mentorship of dermatology physicians.

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Tim Howard, PA-C

Timothy Howard is a nationally certified physician assistant. He graduated from the US Army’s physician assistant program and received his master’s degree in family medicine from the University of Nebraska. Tim joined Hawaii Dermatology Centers in 2007 after 20 years of military service. He is skilled in all aspects of medical and cosmetic dermatology. He particularly enjoys performing cosmetic procedures such as dermal fillers, neurotoxins, and laser procedures. Outside of the clinic, Tim enjoys staying fit by running, hiking and exploring the beautiful sites of Hawaii.

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Sarah Beaton, PA-C

Sarah Beaton is a nationally certified physician assistant. She earned a master’s degree in physician assistant studies from the University of Iowa College of Medicine. For the first 10 years of her medical career, Sarah practiced family medicine and pediatrics in Colorado and Guam. Since moving to Hawaii in 2004 and transitioning into dermatology, Sarah has maintained membership with the Society of Dermatology Physician Assistants, and practices medical, surgical and cosmetic dermatology. She joined Hawaii Dermatology Centers in 2013. Outside of the clinic you can find Sarah on a hiking trail with her husband and dogs, gardening or on her yoga mat.

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Christina Robbins, PA-C

Christina Robbins is a master's level nationally certified physician assistant with more than 20 years of health care experience. She enjoys all aspects of dermatology from diagnosing and treating medical conditions to doing cosmetic procedures such as Restylane fillers, Botox®, Dysport, and chemical peels. Having spent her childhood in Hawaii, she is an island girl at heart and enjoys the beauty and adventure of the islands. She especially enjoys working with exceptional co-workers and with the best patients on the island.

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Nicole Dalton

Practice Manager

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Giselle Franklin

RN/Aesthetics Manager


Nicole Dalton

Nicole Dalton is the practice manager. She makes sure clinic operations run smoothly and that our patients’ needs are met. Her passion for health care shows in her efforts to support innovations and improvements across the practice. Nicole has a bachelor’s degree in healthcare management and is currently pursuing her MBA from Hawaii Pacific University. She is also a US Air Force Veteran with over eight years of human resource management experience. Nicole enjoys working out and spending time on the beautiful beaches of Hawaii.

Giselle Franklin

Giselle Franklin is a registered nurse and aesthetician licensed in the state of Hawaii. Giselle graduated from the University of Hawaii where she received her BSN. She joined Hawaii Dermatology Centers in 2011 and has served as aesthetics manager since 2019. Giselle is highly skilled in all aspects of cosmetic dermatology. Her areas of practice include neurotoxins, dermal fillers, laser procedures, as well as providing cosmetic consultations. When not at the clinic, Giselle is a travel enthusiast, lover of art, and dedicated wife and mother.

Your safety and the safety of our staff is a top priority. Patients will be asked to complete a COVID screening questionnaire and have their temperature taken before being seen. Patients are required to wear a mask during their appointment. We also ask that you come to your appointment alone unless you require assistance from another adult, or are accompanying a child.

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