Dr. Gary M. Davidson

Mark Sivieri is a primary care provider, practicing in Family Medicine in Columbia, Maryland. Dr. Sivieri is rated as an Advanced provider by MediFind in the treatment of Congenital Antithrombin 3 Deficiency. His top areas of expertise are Juvenile Dermatomyositis, Light Chain Deposition Disease (LCDD), Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, and MAGIC Syndrome.

Guoping Xu is a primary care provider, practicing in Family Medicine in Frederick, Maryland. Dr. Xu has been practicing medicine for over 43 years and is rated as an Experienced provider by MediFind in the treatment of Congenital Antithrombin 3 Deficiency. His top areas of expertise are Protein S Deficiency, Protein C Deficiency, Congenital Antithrombin 3 Deficiency, and Hereditary Resistance to Anti-Vitamin K. Dr. Xu is currently accepting new patients.

Kerry Lewis is a primary care provider, practicing in Family Medicine in Fairfax, Virginia. Dr. Lewis is rated as an Experienced provider by MediFind in the treatment of Congenital Antithrombin 3 Deficiency. His top areas of expertise are Autosomal Dominant Hypocalcemia, Melasma, Membranous Nephropathy, and Vitamin D Deficiency. Dr. Lewis is currently accepting new patients.