Which Doctor Diagnoses Dementia?

Most people start with their primary care doctor, who may refer to a neurologist, geriatrician, geriatric psychiatrist, neuropsychologist or memory clinic; here is what each one does and how to get the right referral.

Last reviewed: October 2026

When you or someone you love starts having memory trouble, one of the first questions is simply: who do we call? There is no single "dementia doctor." Diagnosis is usually a team effort that starts close to home and adds specialists when needed. Knowing who does what can save months of waiting and frustration.

Start with your primary care doctor

For most people, the first stop is a primary care doctor—a family physician, internist, nurse practitioner or physician assistant. The National Institute on Aging (NIA) notes that a primary care doctor can often do an initial evaluation and may refer you to a specialist if needed.

A primary care visit for memory concerns usually includes:

A medical history – what changes you've noticed, when they started and how they affect daily life
A review of all medicines, including over-the-counter drugs and supplements (some can affect memory—see Medications That Can Affect Memory)
A short memory and thinking test, such as the Mini-Cog, MMSE or MoCA (see Cognitive Screening Tests (MMSE, MoCA))
A physical exam and blood tests to check for treatable problems like thyroid disease or low vitamin B12 (see Reversible Causes of Memory Problems)

This step matters. Some causes of memory problems are treatable, and your regular doctor already knows your health history. If you have Medicare, the yearly Annual Wellness Visit includes a check for cognitive changes—a good moment to raise concerns.

When a specialist is needed

The NIA lists several kinds of doctors with expertise in diagnosing dementia, including neurologists, geriatric psychiatrists, neuropsychologists and geriatricians. Some biomarker tests, the NIA notes, are only available through a specialty clinic or research center. A referral may make sense if:

Symptoms began before age 65 (see Young-Onset Dementia)
The picture is unusual—for example, early changes in vision, language, behavior or movement rather than memory
The first evaluation didn't find a clear answer
You want to know whether newer treatments such as Lecanemab (Leqembi) or Donanemab (Kisunla) might be an option, which requires confirming amyloid with a PET scan or spinal fluid or blood test

Who's who

Specialist	What they focus on
Neurologist	Diseases of the brain and nervous system. Often orders brain scans and biomarker tests and manages newer Alzheimer's drugs.
Geriatrician	Medical care of older adults, especially people with several health conditions and many medicines.
Geriatric psychiatrist	Mental health in later life—depression, anxiety, hallucinations or behavior changes that may come with, or mimic, dementia.
Neuropsychologist	Not a medical doctor but a psychologist who gives detailed, hours-long tests of memory, attention, language and problem-solving to map strengths and weaknesses.
Memory clinic / Alzheimer's center	Teams that bring several of these experts together, often with social workers and nurses.

Depending on the situation, other professionals may be involved too: a radiologist reads MRI, CT or PET scans (see Brain Imaging: MRI, CT and PET); a sleep specialist may check for sleep apnea; and an audiologist or eye doctor can rule out hearing or vision problems that make memory seem worse.

What the full evaluation looks like

According to the NIA and Mayo Clinic, there is no single test for dementia. Doctors put together several pieces:

Memory, thinking and functional tests
Interviews with a family member or close friend about day-to-day changes
Neurological exam (reflexes, balance, coordination, eye movements)
Lab tests and sometimes brain imaging
In some cases, biomarker tests for Alzheimer's proteins in blood or spinal fluid (see Blood Tests for Alzheimer's and Spinal Fluid (CSF) Testing)

The Alzheimer's Association notes that a complete evaluation can help determine whether symptoms are due to Alzheimer's or another cause, which shapes treatment and planning.

How to get a referral

Ask directly. "I'd like to see a specialist about these memory changes. Can you refer me?" is a reasonable request.
Check your insurance. Some plans require a referral from your primary care doctor before they'll cover a specialist visit.
Ask about wait times. Specialist waits can be long. Get on a list early and ask to be called if there's a cancellation.
Look for academic centers. NIA-funded Alzheimer's Disease Research Centers, many at university hospitals, offer expert evaluations and research opportunities.
Consider telehealth. Some memory clinics do part of the evaluation by video, which can help if you live far away.

Tips for families

Go together. A person with memory loss may not notice—or may downplay—changes (see Anosognosia (Lack of Awareness)). A family member's observations are an important part of the diagnosis.
Write things down before the visit. Specific examples ("got lost driving to church in March") are more helpful than general worries. See Preparing for a Memory Appointment.
Bring every medicine bottle, or a full list with doses.
Ask what comes next. Who will explain results? Will there be follow-up visits? Who do we call with questions?

If you feel brushed off

Sometimes memory complaints are dismissed as "just aging." If changes are getting worse or affecting daily life, it's okay to ask for a more thorough evaluation or a second opinion. Our article on Normal Aging vs. Memory Problems explains the difference between typical forgetfulness and signs worth checking.

Where to get help

Alzheimer's Association 24/7 Helpline: 800-272-3900 (can help you find local memory clinics)
NIA ADEAR Center: 800-438-4380
Eldercare Locator: 800-677-1116

Sources

Not medical advice. This article is general information, not a diagnosis or treatment plan for any individual. Talk with a doctor about your situation.

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We may answer common questions in future updates (we won't share your name). We can't give personal medical advice; for urgent help call the Alzheimer's Association Helpline at 800-272-3900.

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