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staff

Julia Sheen, DrPH, MPH

Dr. Sheen’s public health experience extends 25 years, as she has had oversight of public health programs at all levels within a public health environment. Most recently she held a series of progressively responsible public health roles for the Virgin Islands, culminating in Commissioner of Health, where she was a driving influence in transforming public […]

Anthony F. Oliva, DO, MMM, FACPE

Dr. Anthony Oliva is board-certified in Family medicine and is a Fellow of the American College of Physician Executives.  Dr. Oliva has over 15 years of experience in primary care clinics, community hospitals, multi-hospital Systems, and integrated delivery systems.  As a Chief Medical Officer (CMO), he has personally been involved with the implementation and expansion of […]

Dr. Megan Russell

Originally from Michigan, Dr. Megan Russell is a 2012 graduate of Ohio Northern University. After graduation, she practiced for three years as a clinical staff pharmacist at the VA Northern Indiana Healthcare System before moving to St. Croix. She is very passionate about helping the people of this community lead healthier lives and advancing healthcare […]

Dr. Gail Nunlee-Bland

Dr. Gail Nunlee-Bland is Chief of Endocrinology and Director of the Diabetes Treatment Center at Howard University Hospital. She is Professor of Pediatrics and Medicine. Dr. Nunlee-Bland is a graduate of Howard University College of Medicine. Dr. Nunlee-Bland has received several grants to explore the use of technology to improve diabetes outcomes and patient engagement […]

Carlos Castillo

Carlos Castillo, APRN-CNP, is a board-certified Family Nurse Practitioner certified through the American Nurses Credentialing Center. He completed his Master of Science in Nursing at Barry University and received his nursing degree also from Barry University School of Nursing in Miami Shores, Florida. Over the years he has work in a variety of medical settings, […]

Sumi Tohan

Sumi Tohan is a registered dietitian, certified diabetes care and education specialist, and certified specialist in obesity and weight management. She has over a decade of experience in the field of nutrition. She completed her undergraduate degree from the Pennsylvania State University and her graduate degree from Columbia University. She grew up outside of Washington, […]

Desiree James

Desiree James is a nationally certified Diabetes Care and Education Specialist (CDES). She is certified by Emory University Diabetes Training and Technical Assistance Training Center as a Diabetes Prevention Lifestyle Coach. Mrs. James has 28 years of experience in Nursing and is well-regarded by the St. Croix community as an exceptional diabetes educator. Mrs. James’ […]

Dr. Tin Yan Alvin Liu

Dr. Tin Yan Alvin Liu was born and raised in Hong Kong, and subsequently attended Phillips Exeter Academy, Cornell University (B.A.) and Columbia University (M.D.). He completed his ophthalmology residency and vitreoretinal fellowship training at the Wilmer Eye Institute at Johns Hopkins University (JHU).  Dr. Liu is an interdisciplinary strategist at the intersection of healthcare, […]