Nizar A. Tejani, MD earned a degree of a Doctor of Medicine. Licenses and Affiliations. Nizar A. Tejani, MD has been registered with the National Provider Identifier database since September 26, 2006, and his NPI number is 1043311459. Book an Appointment. To schedule an appointment with Dr. Nizar A. Tejani, please call (770) 507-9929..