PMHNP Scope of Practice
PMHNP Scope of Practice by State: Full Practice Authority Explained
Whether a psychiatric nurse practitioner can practice and prescribe independently, or must maintain a collaborative or supervisory agreement, depends entirely on the state. Here is the framework, what full practice authority really means, and exactly how to check your state.
Why This Matters
Your State Defines How You Can Practice
For a psychiatric mental health nurse practitioner (PMHNP), the single biggest structural variable in how you can practice is your state’s practice authority. It determines whether you can open and run an independent practice under your own license, or whether you must maintain a formal relationship with a physician to see patients and prescribe. That one distinction ripples into your startup costs, your billing, your credentialing, and even where you can work.
The American Association of Nurse Practitioners (AANP) organizes this into three categories, full, reduced, and restricted, and maintains the authoritative state-by-state reference. This page explains the framework and how to apply it to your state. It does not substitute for your state board of nursing or the current AANP map, both of which are the sources you should act on.
The Framework
Full, Reduced, and Restricted Practice (AANP)
The AANP classifies every state’s NP practice environment into one of three categories. The definitions below are AANP’s own. See the AANP State Practice Environment page and its interactive map for the current classification of all 50 states, Washington, D.C., and U.S. territories.
Full Practice
Per AANP: state practice and licensure laws permit all NPs to evaluate patients; diagnose, order and interpret diagnostic tests; and initiate and manage treatments, including prescribing medications and controlled substances, under the exclusive licensure authority of the state board of nursing. AANP notes this is the model recommended by the National Academy of Medicine and the National Council of State Boards of Nursing.
Reduced Practice
Per AANP: state practice and licensure laws reduce the ability of NPs to engage in at least one element of NP practice. These states typically require a career-long regulated collaborative agreement with another health provider for the NP to provide care, or limit the setting of one or more elements of practice.
Restricted Practice
Per AANP: state practice and licensure laws restrict the ability of NPs to engage in at least one element of NP practice. These states typically require career-long supervision, delegation, or team management by another health provider for the NP to deliver patient care.
Important
The Count of Full Practice Authority States Is Disputed and Changing
You will see confident-sounding claims that “X states” have full practice authority. Be careful with any single number. The count varies across sources and moves with legislation, states pass laws, phase in transition-to-practice requirements, or change classifications, and different organizations may categorize a given state slightly differently at a given moment. A number that was accurate last year may be wrong today.
For that reason, we do not print a specific count of full practice authority states here. Instead, go to the source: check the current AANP State Practice Environment map for the up-to-date classification, and confirm the specifics with your own state board of nursing, which is the legal authority for your license. If your practice model depends on the answer, verify it at both, not from a summary.
What It Means Day to Day
What Full Practice Authority Actually Means for a PMHNP
Full practice authority (FPA) means a PMHNP can practice to the full extent of their education and certification under the exclusive licensure authority of the state board of nursing, without a legally required collaborative or supervisory agreement with a physician. In practical terms, in an FPA state a PMHNP can generally:
Practice Independently
Evaluate, diagnose, and manage psychiatric patients and open and operate a practice under their own license, without a mandated physician relationship as a condition of practicing.
Prescribe on Their Own Authority
Initiate and manage treatment, including prescribing medications and, subject to the state’s rules, controlled substances, under the board of nursing’s authority. Controlled-substance and DEA requirements still apply.
Avoid a Required Collaborating Physician
Not need to secure and pay for a mandated collaborative or supervisory agreement simply to be allowed to see patients, which removes a recurring cost and a structural dependency.
In reduced and restricted states, by contrast, a PMHNP must maintain the state-mandated collaborative agreement (reduced) or supervision/delegation arrangement (restricted) to practice or to prescribe, at least for one or more elements of practice. The exact requirements, and which elements they touch, are state-specific, so confirm them with your board.
The Agreement
Collaborative Practice Agreements: What They Are and What They Cost
A collaborative practice agreement (CPA) is a formal, usually written arrangement between a nurse practitioner and a physician that authorizes or governs certain elements of the NP’s practice, commonly prescribing, and sometimes the broader scope of care. In states classified as reduced or restricted, some form of this agreement (or a supervisory arrangement) is legally required for the PMHNP to practice or prescribe. The precise contents, scope, and documentation requirements are defined by state law and vary considerably.
It Is Often a Real, Recurring Cost
When a state requires a collaborating or supervising physician, that physician’s involvement typically comes at a price, frequently a monthly or per-visit fee negotiated between the parties. Amounts vary widely by state, specialty, and market, so do not assume a figure; treat it as a real line item to budget and negotiate.
It Shapes Your Practice Structure
A required agreement means you must find, secure, and maintain a qualified collaborator, and keep the relationship in place for as long as your state requires it. Losing that collaborator can interrupt your ability to practice, so it is a dependency to plan around.
It Interacts With Billing and Credentialing
Whether and how you must document supervision or collaboration can affect enrollment, credentialing, and how services are billed. Some payers and some billing arrangements have their own supervision expectations layered on top of state law.
Because the requirement, and its cost, hinges entirely on your state’s classification, this is one of the first things to nail down before you plan a practice. In a full practice authority state you may not need a CPA at all; in a reduced or restricted state, budgeting and sourcing the collaborator is part of your launch plan.
Do This
How to Check Your State (A 50-State Approach)
Rather than trusting a fabricated per-state table that can go stale the moment a bill passes, use this repeatable process for any of the 50 states. It takes about ten minutes and points you at authorities that are actually current.
1. Start With the AANP Map
Open the current AANP State Practice Environment map and find your state’s classification, full, reduced, or restricted. This tells you, at a glance, whether independent practice is likely available or whether an agreement is required.
2. Confirm With Your State Board of Nursing
Your state board of nursing is the legal authority for your license. Read its current APRN rules on scope, prescriptive authority, controlled substances, and any collaborative or supervisory requirements. The board, not a summary, governs what you may do.
3. Check for Transition-to-Practice Rules
Some states grant fuller authority only after a defined period of supervised or collaborative practice hours. Confirm whether your state has a transition-to-practice requirement and where you stand against it.
4. Verify Controlled-Substance and DEA Specifics
Prescriptive authority for controlled substances can carry state-specific conditions on top of federal DEA registration. Confirm your state’s rules for the schedules you expect to prescribe in psychiatric practice.
5. If an Agreement Is Required, Price It
In reduced or restricted states, identify what the collaborative or supervisory agreement must contain and what a qualified collaborating physician will cost in your market. Build that into your plan before you launch.
6. Re-Check Before You Rely On It
Classifications and rules change with legislation. Re-verify at the AANP map and your board before making a decision that depends on the answer, especially if you are relying on something you read months ago.
Go Deeper
Related PMHNP Resources
Scope of practice is the foundation, but building a practice touches credentialing, billing, and setup too. Explore the rest of our PMHNP guidance:
Your State, In Detail
State-specific PMHNP practice guides are being added. In the meantime, use the AANP map and your board of nursing as your authoritative starting point for your state’s rules.
PMHNP Credentialing
How credentialing and payer enrollment work for psychiatric nurse practitioners. See the PMHNP credentialing guide.
How to Start a PMHNP Practice
The end-to-end path from license to open doors. Read how to start a PMHNP practice.
PMHNP Practice Hub
The central hub for our PMHNP resources on scope, reimbursement, credentialing, and operations. Visit the PMHNP hub.
Common Questions
PMHNP Scope of Practice FAQ
How many states have full practice authority for nurse practitioners?
The count is disputed across sources and changes with legislation, so we do not publish a fixed number. Check the current AANP State Practice Environment map for the up-to-date classification, and confirm with your state board of nursing.
Can a PMHNP practice independently?
It depends on your state’s classification. In full practice authority states, a PMHNP can generally practice and prescribe under the board of nursing’s exclusive authority without a required physician agreement. In reduced or restricted states, a collaborative or supervisory arrangement is legally required for at least some elements of practice.
What is a collaborative practice agreement?
It is a formal, usually written arrangement between an NP and a physician that authorizes or governs elements of the NP’s practice, often prescribing. Reduced and restricted states require one (or a supervisory arrangement) to practice. Its required contents are defined by state law.
Does a collaborating physician cost money?
Often, yes. Where a state requires a collaborating or supervising physician, that physician’s involvement is commonly provided for a negotiated fee. Amounts vary widely by state and market, so treat it as a real, recurring cost to budget and negotiate rather than assuming a figure.
Where is the authoritative source for my state’s rules?
Two sources: the AANP State Practice Environment map for the current classification, and your state board of nursing for the binding legal requirements on your license. If a decision depends on the answer, verify at both.
Browse by State
PMHNP Practice Requirements by State
Detailed, state-specific overviews of scope of practice, prescribing, and collaboration requirements. Always confirm current rules with your state board of nursing and the AANP map.
Alaska
Full practice authority. PMHNP scope, collaboration, and prescribing in Alaska.
Arkansas
Reduced practice authority. PMHNP scope, collaboration, and prescribing in Arkansas.
Connecticut
Full practice authority. PMHNP scope, collaboration, and prescribing in Connecticut.
Delaware
Full practice authority. PMHNP scope, collaboration, and prescribing in Delaware.
Hawaii
Full practice authority. PMHNP scope, collaboration, and prescribing in Hawaii.
Idaho
Full practice authority. PMHNP scope, collaboration, and prescribing in Idaho.
Iowa
Full practice authority. PMHNP scope, collaboration, and prescribing in Iowa.
Kansas
Full practice authority. PMHNP scope, collaboration, and prescribing in Kansas.
Kentucky
Reduced practice authority. PMHNP scope, collaboration, and prescribing in Kentucky.
Maine
Full practice authority. PMHNP scope, collaboration, and prescribing in Maine.
Mississippi
Reduced practice authority. PMHNP scope, collaboration, and prescribing in Mississippi.
Montana
Full practice authority. PMHNP scope, collaboration, and prescribing in Montana.
Nebraska
Full practice authority. PMHNP scope, collaboration, and prescribing in Nebraska.
Nevada
Full practice authority. PMHNP scope, collaboration, and prescribing in Nevada.
New Hampshire
Full practice authority. PMHNP scope, collaboration, and prescribing in New Hampshire.
New Mexico
Full practice authority. PMHNP scope, collaboration, and prescribing in New Mexico.
North Dakota
Full practice authority. PMHNP scope, collaboration, and prescribing in North Dakota.
Oklahoma
Restricted practice authority. PMHNP scope, collaboration, and prescribing in Oklahoma.
Rhode Island
Full practice authority. PMHNP scope, collaboration, and prescribing in Rhode Island.
South Dakota
Full practice authority. PMHNP scope, collaboration, and prescribing in South Dakota.
Utah
Full practice authority. PMHNP scope, collaboration, and prescribing in Utah.
Vermont
Full practice authority. PMHNP scope, collaboration, and prescribing in Vermont.
West Virginia
Reduced practice authority. PMHNP scope, collaboration, and prescribing in West Virginia.
Wyoming
Full practice authority. PMHNP scope, collaboration, and prescribing in Wyoming.
Advance A Practice
Not Sure What Your State Allows?
We help PMHNPs translate their state’s scope-of-practice rules into a real launch plan, collaborative agreements, credentialing, and billing included. Get a readiness review and start on solid ground.
Informational only, and not legal advice. Scope-of-practice laws, practice-authority classifications, and collaborative-agreement requirements vary by state and change with legislation. Always verify current rules with the AANP State Practice Environment map and your state board of nursing before making decisions. Last reviewed: July 2026.