Kathleen G. Nadeau, PhD in Baltimore: ADHD and Learning Disorder Specialist

Kathleen G. Nadeau holds a PhD in clinical psychology and specializes in the evaluation and treatment of attention-deficit/hyperactivity disorder (ADHD) and learning disabilities in adults and adolescents. Her practice sits within Baltimore's larger ecosystem of ADHD providers, where she is known for detailed neuropsychological assessment and protocol-driven treatment planning rather than quick medication management alone.

What she actually does

Nadeau's practice focuses on comprehensive ADHD evaluation, differential diagnosis, and behavioral intervention planning. She distinguishes between ADHD and other conditions that resemble it (anxiety, depression, learning disabilities, sleep disorders) through structured assessment, medical history review, and standardized testing. She works with both adolescents and adults; her clientele skews toward intellectually capable individuals whose ADHD may have gone undiagnosed or been masked in school or work settings. Her practice does not prescribe medication; instead, she provides diagnostic clarity and treatment recommendations that patients and their physicians can use to inform pharmacological decisions elsewhere.

Services and assessment costs

A comprehensive ADHD evaluation at Nadeau's practice typically costs between $1,500 and $2,500, depending on the complexity of the case and length of the neuropsychological battery. This includes clinical intake, continuous performance testing, rating scales, educational and occupational history review, and a detailed written report with recommendations. Many insurance plans cover some portion of psychological evaluation; Medicare and commercial plans vary, so verification of your specific coverage before scheduling is necessary. Follow-up consultation, typically 45 to 60 minutes for results review and treatment planning, runs $150 to $200 per session.

Nadeau does not bill hourly for testing time; she bills for the total evaluation package, which avoids the open-ended cost structure that some neuropsychological practices use. This means the price is set in advance, not subject to whether testing takes three hours or five.

How she compares to other Baltimore ADHD evaluators

Baltimore has a limited number of psychologists who offer the depth of ADHD assessment that Nadeau provides. Johns Hopkins Medicine's Adult ADHD Clinic offers evaluation and medication management but typically requires referral and operates within a hospital system's scheduling and insurance protocols. University of Maryland's psychology department houses clinicians who perform ADHD assessment, but availability for new patients is often constrained. Nadeau's independent practice means faster appointment availability for self-referred patients (often 4 to 8 weeks compared to 2 to 3 months for system-based clinics) and more flexibility in scheduling around work or school obligations. Her reports are detailed enough for school accommodations, workplace disability documentation, and medication-prescriber guidance. If you need simultaneous medication management, however, a primary care physician or psychiatrist is still necessary; Nadeau functions as the diagnostic specialist, not the prescriber.

Who this service suits and who it does not

Nadeau's practice is best for adults who suspect undiagnosed ADHD, adolescents whose academic struggles have not responded well to standard intervention, and people who want a clear diagnostic picture before medication. It suits professionals whose work performance has been affected and who need documentation for disability accommodations or workplace support. It is less suitable for individuals in acute psychiatric crisis, those seeking immediate symptom relief through medication, or families whose primary language is not English (the practice operates in English). If you are looking for ongoing behavioral therapy or coaching, you will need a separate referral; the evaluation yields a roadmap, but the practice does not provide long-term treatment.

First visit structure

New patients are asked to complete a clinical intake form before arrival, including developmental and educational history, current symptoms, family psychiatric history, and occupational information. The first session typically lasts 90 to 120 minutes and includes a clinical interview with Nadeau, review of school records or performance data if available, and the start of testing (computerized continuous performance test, IQ screening if indicated). Subsequent sessions, often one to three additional appointments, complete questionnaires and additional cognitive tasks. Within 2 to 4 weeks, a written report is mailed to you and can be shared with your physician, school, employer, or other relevant parties.

Hours, location, and logistics

Nadeau's practice is located in Baltimore County, north of the city proper. Office hours run Monday through Friday, typically 9 a.m. to 5 p.m., with some evening appointments available. Parking is on-site and free. To confirm current hours and location before scheduling, contact the practice directly; practitioners' locations within the county occasionally shift. There is no walk-in availability; all appointments are scheduled in advance.

Nadeau's diagnostic depth and systematic approach make her a practical choice for anyone in Baltimore who needs clarity on ADHD before moving to treatment, especially when a diagnosis has been uncertain or missed.