Denise Armellini, MD

Denise Armellini, MD


Washingtonian Top Doctors 2015 coverWashingtonian Top Doctors 2015 coverDr. Armellini is listed in Washingtonian magazine’s “The Very Best Doctors” compilation for 2015 and 2017. She completed her Endocrinology Fellowship at the University of Miami’s Division of Endocrinology. She also held full-time faculty status and was Assistant Professor of Clinical Medicine at the University of Miami. Additionally, Dr. Armellini was co-Director of the Thyroid Tumor Board specializing in the diagnosis and management of advanced thyroid cancers and thyroid disorders. She was the first endocrinologist in Northern Virginia toimplement the Afirma Thyroid FNA Analysis technique. This technique greatly improves the diagnostic accuracy of thyroid nodules.

Dr. Armellini received her medical degree from the Universidad Central de Venezuela School of Medicine, and her Internal Medicine Residency was completed at Winthrop University Hospital in New York, affiliated hospital with Stony Brook Medical Center.

She is currently board certified by the American Board of Internal Medicine in Endocrinology, Diabetes and Metabolism and Internal Medicine.

Dr. Armellini also holds current certifications in Bone Densitometry, Thyroid Ultrasound, and Fine Needle Aspiration Biopsy of thyroid nodules. She is an active member of the American Thyroid Association, The Endocrine Society, and The American Association of Clinical Endocrinologists. She currently holds privileges at Virginia Hospital Center.

Dr. Armellini speaks fluently both English and Spanish.

Geraldine Stile-Killian, NP

Geraldine Stile-Killian, NP

Nurse Practitioner

Geraldine Stile-Killian, is a family nurse practitioner with 30 years of experience in patient care.

She holds a certification in advanced diabetes management with expertise in diabetes type 1, insulin pump therapy and diabetes type 2. She also has experience in managing patients with thyroid disorders. She graduated from George Mason University/George Washington University Medical School collaborative Nurse Practitioner program with a Masters of Science in Nursing. She joined The Endocrine Center in April 2017 after working for 4 years in the Endocrinology Department at Fauquier Health System.

Geraldine has an extensive background in women’s health, community health primary care, wellness, and weight loss management.

She and her husband live in Leesburg since 2000 and in her free time, she enjoys dancing, playing piano, and hanging out with her family, particularly her new grandchild.


I was very impressed, especially by the amount of time Dr. Armellini spent on me during the appointment. She gave clear information on my condition, the planned treatment, and answered all of my and my wife’s questions.