A neuropsychologist is not a medical doctor. Neuropsychologists hold a doctoral degree in psychology (a PhD or PsyD), not a medical degree (MD or DO). They cannot perform physical exams, order imaging scans, or, in most states, prescribe medication. What they specialize in is measuring how your brain actually functions through detailed cognitive testing.
What Degree Neuropsychologists Hold
Neuropsychologists complete a doctoral program in clinical psychology with a specialized focus in neuropsychology. This typically takes five to seven years and includes coursework in brain-behavior relationships, clinical training through supervised externships, and a research dissertation. After earning their doctorate, they complete a two-year postdoctoral residency specifically in clinical neuropsychology. Faculty at leading programs, like Fordham University’s clinical neuropsychology track, hold PhD degrees rather than MDs.
By contrast, a medical doctor completes four years of medical school after college, then a residency in their chosen specialty. A neurologist (the MD counterpart most people confuse with a neuropsychologist) trains in diagnosing and treating diseases of the nervous system using imaging, lab tests, and medication. The educational paths are fundamentally different, even though both professionals work with the brain.
What Neuropsychologists Actually Do
The core tool of a neuropsychologist is the neuropsychological assessment, a set of standardized tests that measure specific thinking skills. As Yale Medicine describes, the assessment takes about four hours. You’ll be asked to remember things, draw things, pay attention, solve problems, and perform other tasks designed to reveal how well different parts of your brain are working. The neuropsychologist then compares your results to people of the same age and educational background to pinpoint where problems exist.
This fills a gap that medical imaging can’t. An MRI shows the physical structure of your brain. An EEG measures electrical activity. But neither tells you whether someone’s memory, attention, or problem-solving ability is actually impaired in daily life. Neuropsychological testing does. It’s commonly used after traumatic brain injuries, strokes, and in evaluating conditions like ADHD, dementia, learning disabilities, and epilepsy.
How They Work Alongside Medical Doctors
Neuropsychologists frequently collaborate with physicians rather than replacing them. At institutions like Johns Hopkins, neuropsychologists coordinate treatment plans with rehabilitation physicians, surgeons, and therapists. After a stroke or brain injury, a neuropsychologist’s assessment helps the medical team understand which cognitive abilities were affected and how to structure rehabilitation. For chronic pain patients being considered for advanced treatments, physicians often refer to neuropsychologists for psychological and cognitive evaluation before proceeding.
The relationship is complementary. A neurologist might identify a brain lesion on a scan. The neuropsychologist determines how that lesion is affecting the patient’s thinking, emotional regulation, and ability to function. Together, they build a fuller picture than either could alone. Neuropsychologists also evaluate mood, coping style, and psychological factors that could create barriers to recovery, then develop treatment plans that address those issues.
Can Neuropsychologists Prescribe Medication?
In the vast majority of states, no. Johns Hopkins Medicine states it plainly: neuropsychologists “can’t prescribe medicine.” However, a small number of states have passed laws granting prescriptive authority to specially trained psychologists. As of 2022, Idaho, Illinois, Iowa, Louisiana, and New Mexico allow appropriately trained psychologists to prescribe, along with some federal settings like the Department of Defense and Indian Health Service.
The additional training required is substantial. Louisiana requires a postdoctoral master’s degree in clinical psychopharmacology. Illinois requires 14 months of supervised clinical medical rotations totaling at least 1,620 hours. Idaho requires a postdoctoral master’s degree, a supervised practicum, a two-year provisional prescribing period, and passing a national exam. These aren’t standard credentials for neuropsychologists. Most neuropsychologists do not pursue prescriptive authority, and the option doesn’t exist in most states.
Board Certification for Neuropsychologists
The gold standard credential is board certification through the American Board of Clinical Neuropsychology (ABCN), a specialty board of the American Board of Professional Psychology. Established in 1981, ABCN administers competency exams in both general clinical neuropsychology and pediatric clinical neuropsychology. Board-certified neuropsychologists carry the designation ABPP-CN after their name.
Earning this certification requires completing a doctoral degree, a two-year postdoctoral residency, and passing a rigorous examination. Not all practicing neuropsychologists are board certified, but the credential signals a high level of training and peer-reviewed competence. If you’re looking for a neuropsychologist, checking for ABPP-CN status is one way to verify their specialization.
Neuropsychologist vs. Neurologist vs. Psychiatrist
These three professionals all deal with the brain, but in different ways:
- Neuropsychologist (PhD/PsyD): Evaluates cognitive function through standardized testing. Identifies how brain conditions affect thinking, memory, and behavior. Creates treatment and rehabilitation plans but typically does not prescribe medication.
- Neurologist (MD/DO): A medical doctor who diagnoses and treats diseases of the nervous system, including epilepsy, multiple sclerosis, Parkinson’s disease, and stroke. Uses imaging, lab work, and medication.
- Psychiatrist (MD/DO): A medical doctor who diagnoses and treats mental health conditions. Can prescribe medication and may also provide therapy. Focuses on conditions like depression, anxiety, bipolar disorder, and schizophrenia.
If you’ve been referred to a neuropsychologist, it’s usually because a physician wants a detailed map of your cognitive strengths and weaknesses, not because you need medical treatment from that provider. The testing results often guide decisions made by the medical doctors on your care team.