Diabetology is the branch of medicine dedicated to the clinical science of diabetes mellitus, its diagnosis, treatment and follow-up.
A Diabetologist is either a Physician or Endocrinologist who has received special training and experience in this field.
A part from regulating medication (e.g. insulin) dosage and timing, a Diabetologist will also direct appropriate lab tests and treatment catered to individual needs of patients' and monitor their progress to prevent long term complications of diabetes, e.g. retinopathy, nephropathy and peripheral neuropathy.