These areas are among her clinical interests: intensive care and pulmonary hypertension. Dr. Preston is affiliated with Lowell General Hospital and Tufts Medical Center. She accepts Aetna, Humana, and Medicaid, as well as other insurance carriers. Dr. Preston is open to new patients. She obtained her medical school training at Carol Davila University of Medicine and Pharmacy and performed her residency at Rhode Island Hospital. Dr. Preston (or staff) is conversant in Romanian, Spanish, and Vietnamese.