How to Start an NP Practice in Ohio: Standard Care Arrangements and the 5-APRN Limit

By Jody Mitchell, MD | August 1, 2025

A psychiatric NP colleague in Columbus called me on a Tuesday afternoon, frustrated. She had been trying to find a collaborating physician for six weeks and kept hearing the same thing: the physician already had five APRNs under their standard care arrangement and could not take on another. She did not understand why, and she was running out of options in her area. That five-APRN cap is one of the defining features of Ohio's practice framework -- and one of the most important details to plan around.

A psychiatric NP colleague in Columbus called me on a Tuesday afternoon, frustrated. She had been trying to find a collaborating physician for six weeks and kept hearing the same thing: the physician already had five APRNs under their standard care arrangement and could not take on another. She did not understand why, and she was running out of options in her area.

That five-APRN cap is one of the defining features of Ohio's practice framework -- and one of the most important details to plan around before you sign a lease, hire staff, or order business cards.

Ohio is what the American Association of Nurse Practitioners classifies as a "reduced practice" state. NPs can evaluate, diagnose, and treat patients, and they have broad prescriptive authority including controlled substances. But they cannot practice independently. Every NP in Ohio must have a Standard Care Arrangement (SCA) with a collaborating physician, and that arrangement must be in place before you see your first patient.

I have worked with NP colleagues across Ohio -- Cleveland, Cincinnati, Columbus, Dayton, and some of the smaller rural communities where the need for providers is enormous. The state offers real opportunity, especially in primary care and behavioral health. But the regulatory framework has specific requirements that you need to understand completely before you invest your time and money.

The Standard Care Arrangement: Ohio's Central Requirement

Ohio's practice model centers on the Standard Care Arrangement, or SCA. This is the legal document that authorizes an NP (called a "certified nurse practitioner" or CNP in Ohio statute) to practice. Without it, you cannot see patients, prescribe medications, or bill insurance.

The SCA is governed by Ohio Revised Code Section 4723.431 and the Ohio Administrative Code Chapter 4723-8. Here is what it must include: