He is Fellow of the American Neurological Association and the American Academy of Neurology. He is a member of the Parkinson's Disease Study Group (PSG). He is listed in Best Doctors in America and has been Principal investigator in many clinical trials for Parkinson’s disease including a trial on gene therapy.
He has published in peer reviewed journals such as Lancet Neurology, Neurology, Neurosurgery, Journal of Neurology, Stroke, Journal of Neurology Neurosurgery & Psychiatry, Stereotactic & Functional Neurosurgery and written many book chapters. Dr. Siddiqui's interests include Parkinson’s disease, tremors, dystonia, botulinum toxin therapy, movement disorders, cognitive neuroscience and deep brain stimulation.