Psychiatric Nurse Practitioner vs Psychiatrist
Both a psychiatrist and a psychiatric nurse practitioner can evaluate, diagnose and prescribe for mental health conditions. A psychiatrist is a medical doctor who has completed a four-year psychiatry residency. A psychiatric nurse practitioner is a registered nurse with graduate psychiatric training and, for the PMHNP-BC credential, national board certification, and in California prescribes under standardized procedures with physician supervision unless certified as a 103 or 104 NP.
What is the difference between a psychiatrist and a psychiatric nurse practitioner?
The difference is the training path: a psychiatrist is a physician who specialized in psychiatry, and a psychiatric nurse practitioner is an advanced practice nurse who specialized in psychiatric and mental health care.
A psychiatrist is a medical doctor (an MD or DO). After medical school, a psychiatrist completes a psychiatry residency that the Accreditation Council for Graduate Medical Education requires to be 48 months long. Board certification in psychiatry comes from the American Board of Psychiatry and Neurology or the American Osteopathic Board of Neurology and Psychiatry. The American Board of Psychiatry and Neurology requires a valid, unrestricted medical license, completion of an approved training program and an evaluation process.
A psychiatric nurse practitioner starts as a registered nurse. The next step is a psychiatric mental health nurse practitioner (PMHNP) master’s degree, post-graduate certificate or doctor of nursing practice degree from an accredited program. The American Nurses Credentialing Center, which awards the PMHNP-BC credential, requires at least 500 faculty-supervised clinical hours in that program, along with graduate coursework in advanced pharmacology and in differential diagnosis and disease management, including prescribing. The certification is valid for five years and can then be renewed.
Can a psychiatric nurse practitioner prescribe medication?
Yes, psychiatric nurse practitioners can prescribe medication, and in California the rules for doing so are set in state law and administered by the Board of Registered Nursing.
According to the American Psychiatric Nurses Association, psychiatric mental health advanced practice nurses and psychiatrists can both prescribe. Under California’s traditional route, a nurse practitioner orders (the legal term is “furnishes”) medication under a furnishing number and in strict accordance with a standardized procedure, with physician supervision.
Controlled substances have extra steps. For nurse practitioners working under standardized procedures, the Board of Registered Nursing describes the requirements this way: the nurse practitioner must be registered with the DEA, Schedule II or III substances must be furnished under a patient-specific protocol approved by the supervising or treating physician, and ordering Schedule II substances also requires an approved course with Schedule II content. These are the rules for that route, not a statement about what any clinician prescribes.
Can a psychiatric nurse practitioner diagnose mental illness?
Yes, a psychiatric nurse practitioner can diagnose mental illness. The American Psychiatric Nurses Association states that psychiatric mental health advanced practice nurses assess, diagnose and treat people with psychiatric and substance use disorders.
Is a PMHNP considered a psychiatrist?
No, a PMHNP is not a psychiatrist: a psychiatrist is a physician, and a PMHNP is an advanced practice nurse.
California requires some nurse practitioners to state that distinction to patients. The Board of Registered Nursing says that nurse practitioners certified in the two newer categories described below must post a notice that nurse practitioners are licensed and regulated by the Board, and must tell new patients verbally that a nurse practitioner is not a physician and surgeon.
Do nurse practitioners in California need a doctor’s supervision?
In California, a nurse practitioner works under standardized procedures with physician supervision unless certified as a 103 or 104 NP, two newer categories that can work without standardized procedures.
Assembly Bill 890 (2020), later amended by Senate Bill 1451 (2024), created those two categories, according to the Board of Registered Nursing:
- A 103 NP works in a group setting with at least one physician and surgeon.
- A 104 NP may work independently within the population focus of their national certification.
Becoming a 103 or 104 NP is optional, and the Board notes that nurse practitioners can continue to work under physician supervision with standardized procedures. Its page says it will not be able to certify 104 NPs until 2026.
Under standardized procedures, for furnishing medication, physician supervision does not require the physician to be physically present, according to the Board; supervision for other functions is set in each standardized procedure.
How do a psychiatrist and a psychiatric nurse practitioner compare?
A psychiatrist and a psychiatric nurse practitioner can both evaluate, diagnose and prescribe, and they differ in degree, training, certifying body and licensing board.
| Psychiatrist | Psychiatric nurse practitioner | |
|---|---|---|
| Degree | Medical degree (MD or DO) | Registered nurse, then a PMHNP master’s, post-graduate certificate or doctor of nursing practice |
| Specialty clinical training | Psychiatry residency after medical school, 48 months | At least 500 faculty-supervised clinical hours during the PMHNP program |
| Board certification | American Board of Psychiatry and Neurology, or the American Osteopathic Board of Neurology and Psychiatry | PMHNP-BC from the American Nurses Credentialing Center, renewed every five years |
| Can diagnose | Yes | Yes |
| Can prescribe | Yes | Yes |
| California licensing | Must hold a California physician license to treat patients located in California by telehealth | Licensed and regulated by the California Board of Registered Nursing |
| How they practice in California | May serve as the supervising physician for nurse practitioners working under standardized procedures | Standardized procedures with physician supervision, or as a 103 or 104 NP |
Is it better to see a psychiatrist or a psychiatric nurse practitioner?
This page does not rank a psychiatrist above a psychiatric nurse practitioner or the reverse: both are trained and licensed to evaluate, diagnose and prescribe, and they differ in training path and in the supervision rules for nurse practitioners, not in whether they can treat you.
No source behind this page compares outcomes between the two. What you can do is look at the facts that are checkable. The Department of Consumer Affairs License Search at search.dca.ca.gov lets anyone verify a California nurse’s license and whether that nurse is certified as a 103 or 104 NP. It is also reasonable to ask any practice how it supervises its nurse practitioners.
How does PsychBright’s psychiatrist-led team work?
PsychBright is a psychiatrist-led practice: the team includes board-certified psychiatrists and experienced psychiatric mental health nurse practitioners who provide care with ongoing psychiatrist supervision and clinical oversight.
Nurse practitioners at the practice run intakes and treat patients as part of that team. Prescribing is a clinical decision made after a full evaluation, and nothing is prescribed automatically. You can see the clinicians on the team page, and some speak Spanish or Farsi.
Care is by secure video, anywhere in California, for adults 18 and older. New patients are usually seen within five business days. Insurance is verified before the first appointment, and Medicare and Medicare Advantage are accepted (see insurance). You can read about telepsychiatry, medication management and what to expect at a first appointment, or call (213) 584-2331.
Frequently asked questions
What can a psychiatrist do that a psychiatric nurse practitioner cannot?
In California, a key difference is in how a nurse practitioner’s work is authorized, under rules the Board of Registered Nursing administers. A nurse practitioner’s medical functions, including furnishing medication, run under standardized procedures with physician supervision, unless the nurse practitioner is certified as a 103 or 104 NP. Under standardized procedures, Schedule II and III controlled substances require a patient-specific protocol approved by the supervising or treating physician.
Why do I always see a nurse practitioner instead of a doctor?
At PsychBright, nurse practitioners run intakes and treat patients as part of a psychiatrist-led team, with ongoing psychiatrist supervision and clinical oversight.
What is a psychiatric nurse practitioner vs a therapist?
The American Psychiatric Nurses Association notes that psychiatric mental health advanced practice nurses, psychiatrists, psychologists and social workers usually all provide psychotherapy, and that psychiatric mental health advanced practice nurses and psychiatrists can also prescribe.
How can I check a clinician’s license in California?
Use the Department of Consumer Affairs License Search at search.dca.ca.gov. According to the Board of Registered Nursing, anyone can verify a nurse’s license there, along with whether the nurse is certified as a 103 or 104 NP.
Does a psychiatrist have to be physically present to supervise a nurse practitioner?
Not for furnishing medication. The Board of Registered Nursing states that physician supervision for furnishing is not to be construed to require the physical presence of the physician. It does include collaboration on and approval of the standardized procedure, and availability by telephone at the time the patient is examined. Supervision for other functions is set in the standardized procedure and can differ.
What should I do in a mental health crisis?
Do not wait for an appointment. Call or text 988, or call 911 if someone is in immediate danger.
At PsychBright, prescribing is decided only after a full psychiatric evaluation.
If you are in crisis, call or text 988, or call 911 if someone is in immediate danger.