Can a Nurse Practitioner Do a Psychiatric Evaluation?
Reviewed by Josie Desmarais, PMHNP-BC · Board-Certified Psychiatric-Mental Health Nurse Practitioner · Last updated August 2026
Yes. A psychiatric nurse practitioner (PMHNP-BC) is specifically trained and licensed to perform full psychiatric evaluations — including the mental status exam, diagnostic interview, history-taking, and treatment planning. This is a core function of the PMHNP role, not a scaled-down version of what a psychiatrist does.
Short answer: A thorough psychiatric evaluation is the foundation of good care. It clarifies your diagnosis and creates a treatment plan tailored to you.
Book a comprehensive psychiatric evaluation with a board-certified PMHNP in West Palm Beach.
What a Psychiatric Evaluation Actually Involves
A psychiatric evaluation is a structured clinical assessment that establishes the basis for diagnosis and treatment. It is not a single questionnaire or a brief check-in. A thorough initial evaluation typically takes 60–90 minutes and covers: For more on this, see our guide to choosing between a nurse practitioner and a psychiatrist.
Psychiatric history. Current symptoms, onset, prior episodes, previous diagnoses, hospitalizations, outpatient treatment history, and response to prior medications.
Medical history and medications. Medical conditions that affect mental health (thyroid disorders, neurological conditions, chronic pain), current medications, allergies, and substance use history.
Family history. Psychiatric conditions in first-degree relatives, which inform diagnostic probability and medication selection.
Social and developmental history. Relevant life history, trauma, relationship context, occupational functioning, and current stressors.
Mental Status Exam (MSE). A structured clinical observation of appearance, behavior, speech, mood, affect, thought process, thought content, perceptions, cognition, insight, and judgment. The MSE is a systematic snapshot of current psychiatric functioning.
Differential diagnosis. The process of distinguishing between conditions that share overlapping symptoms — for example, separating major depressive disorder from bipolar depression, or ADHD from generalized anxiety disorder. This step requires clinical training and judgment, not just a checklist. We cover whether a psychiatric NP can prescribe medication in a separate article.
Treatment plan. Following diagnosis, the clinician outlines the recommended approach — medication, therapy referral, further workup (labs, neuropsychological testing), or a combination.
A PMHNP performs every element of this evaluation. The training specifically covers psychiatric assessment methodology, DSM-5-TR diagnostic criteria, psychopharmacology, and evidence-based treatment planning. If that applies to you, read more about what a psychiatric nurse practitioner does.
PMHNP Training for Psychiatric Evaluation
Some patients wonder whether a nurse practitioner’s training prepares them adequately for this level of clinical assessment. The direct answer: yes. PMHNP programs are built around exactly this.
Psychiatric-mental health nursing programs include coursework in advanced psychopathology, psychiatric diagnostic assessment, advanced pharmacology, and psychotherapy theory — alongside hundreds of supervised clinical hours specifically in psychiatric settings. The national board exam (PMHNP-BC through ANCC) tests competency in psychiatric assessment and diagnosis.
This is not a primary care NP doing a mental health screening. A PMHNP is a psychiatric specialist with specialty-specific training. The designation matters.
What a Psychiatric Evaluation at Trust Psychiatry Looks Like
The initial evaluation at Trust Psychiatry & Wellness with Josie Desmarais, PMHNP-BC typically runs 60–75 minutes. The session includes:
- Structured intake covering all history domains described above
- Mental status examination
- Review of any prior records, diagnoses, or medication history the patient brings
- Diagnostic formulation and discussion with the patient — a clinical conversation about what the findings suggest and what the options are, not just a label handed down
- A recommended treatment plan: medication if indicated, therapy referral if appropriate, labs if needed, and a follow-up schedule
The evaluation is conducted in person at 4500 Belvedere Rd, Suite D, West Palm Beach, FL 33415 — or via telehealth for patients elsewhere in Florida.
For ADHD evaluations, Trust Psychiatry also offers the TOVA (Test of Variables of Attention), an objective computer-based performance test conducted in-office that adds a quantitative layer to the clinical assessment. Our team also explains how an NP can diagnose ADHD and prescribe Adderall in detail.
Trust Psychiatry accepts Aetna, Cigna, UnitedHealthcare, Optum, Florida Medicaid, AvMed, Evernorth, M-Care, Cuare, HP, and Paramount. Self-pay options are available — see insurance and fees for current rates.
Frequently Asked Questions
Q: Can a nurse practitioner diagnose mental illness?
A: Yes. A PMHNP-BC is trained and licensed to apply DSM-5-TR diagnostic criteria and assign psychiatric diagnoses. This includes common conditions (depression, anxiety, ADHD) and more complex presentations (bipolar disorder, PTSD, psychotic disorders).
Q: Is a psychiatric evaluation by a nurse practitioner valid?
A: Yes. The evaluation is clinically and legally valid. PMHNP assessments carry the same diagnostic weight as those performed by a psychiatrist. Documentation from a PMHNP psychiatric evaluation is accepted by insurance, disability programs, schools, and other systems that require formal clinical documentation. Learn more about how much a psychiatric evaluation costs here.
Q: How long does a psychiatric evaluation take?
A: Initial psychiatric evaluations typically run 60–90 minutes. At Trust Psychiatry, the intake evaluation is 60–75 minutes. Follow-up medication management appointments are shorter — 15–30 minutes — once treatment is established.
Q: What should I bring to my psychiatric evaluation?
A: Bring a list of your current medications (including supplements), any prior psychiatric records or diagnoses, relevant medical history, your insurance card, and a list of questions. The more complete the picture you bring in, the more targeted the evaluation can be.
Q: Can a psychiatric evaluation be done via telehealth?
A: Yes. The clinical interview, history-taking, and mental status examination can be conducted via telehealth. Certain additional assessments — such as the TOVA for ADHD — require an in-person visit. Trust Psychiatry offers telehealth evaluations for adults across Florida. You may also want to understand how long a psychiatric evaluation takes.
Ready to Schedule Your Psychiatric Evaluation?
Trust Psychiatry & Wellness is accepting new patients for psychiatric evaluations in West Palm Beach and via telehealth across Florida. Call (561) 849-4449 or book online to schedule your initial evaluation with Josie Desmarais, PMHNP-BC.
Ready to Schedule a Psychiatric Evaluation?
Reviewed by · Board-Certified Psychiatric-Mental Health Nurse Practitioner
Josie Desmarais is a board-certified psychiatric-mental health nurse practitioner (PMHNP-BC) at Trust Psychiatry – Mental Health West Palm Beach. She provides psychiatric evaluation and medication management, and helps patients understand how a comprehensive psychiatric evaluation guides mental-health care, through secure telepsychiatry for adults across Florida.