The CPHN Exam: A Guide to the Certified in Public Health Nursing Credential

A new national certification built specifically for public health nurses is on the way. Here is what it is, who is behind it, and how to get a head start.

Last updated 12 October 2026.

What does CPHN stand for?

CPHN stands for Certified in Public Health Nursing. It is a national nursing certification awarded by the National Board of Public Health Examiners (NBPHE) that recognizes a registered nurse's knowledge and practical judgment in public health nursing. The exam launches in late 2026.

Two similar acronyms cause constant confusion. CHPN is Certified Hospice and Palliative Nurse, an unrelated specialty. CPH is Certified in Public Health, a general public health credential from the same board.

What is the CPHN credential?

The Certified in Public Health Nursing (CPHN) credential is a specialty certification designed to recognize the distinct blend of nursing practice and public health science that public health nurses use every day. For years, nurses working in population health had no certification built just for them. The closest option was the broader Certified in Public Health (CPH) credential, which covers public health generally rather than the nursing-specific competencies at the heart of the role.

The CPHN is meant to close that gap. It is intended to validate that a nurse has the foundational knowledge and practical judgment expected in contemporary public health nursing, from community assessment through program evaluation.

Who offers it, and when does it launch?

The certification is being developed by the National Board of Public Health Examiners (NBPHE), the organization that has credentialed public health professionals since 2008 through the CPH program. In response to long-standing demand from public health nurses, the NBPHE began building a nursing-specific certification with the support of a public health nursing advisory committee.

The exam content is grounded in a formal Job Task Analysis the NBPHE completed in 2025, which surveyed the real-world tasks of public health nurses to define what the exam should measure. The question-writing process began in December 2025. The NBPHE says the exam launches in late 2026, with applications opening this fall, and it has now published the eligibility rules, fees, and test format in its October 2026 CPHN candidate handbook.

Why the CPHN matters

A specialty credential does a few things at once. It gives public health nurses a recognized way to demonstrate their expertise to employers, it sets a shared national standard for the role, and it signals a commitment to the field through ongoing professional development. For nurses building a career in population and community health, being among the first to hold the credential can be a meaningful differentiator.

CPHN exam format, cost, and eligibility

The CPHN is a three hour, computer-based exam with 120 scored multiple-choice questions plus 20 unscored pretest questions, each with three answer options, offered year round at testing centers or by live online proctor. Scores are scaled from 200 to 800, with 500 to pass. The standard fee is $385, and you recertify every three years. Eligibility depends on your education: a diploma or ADN nurse needs 2 years of public health nursing experience, a BSN nurse needs 1 year, and a nurse with a graduate degree in public health or public health nursing needs none. See our eligibility and cost guide for the details.

The exam is organized around seven competency domains drawn from the NBPHE's published content outline, each weighted by how central it is to public health nursing practice. The largest share of the exam focuses on assessment and analysis, with strong emphasis also on communication, cultural competence, and foundational public health systems knowledge.

We break down all seven domains and their official weights in a dedicated guide: the CPHN exam content outline.

How to start preparing now

Even before the exam goes live, you can prepare in ways that pay off:

• Get familiar with the seven domains so you know where the exam places the most weight.
• Strengthen the fundamentals of population-based practice: community assessment, program planning, evaluation, and health equity.
• Practice with exam-style questions and rationales to build recall and reasoning, not just recognition.

For a structured approach, see our step-by-step guide on how to study for the CPHN exam.

CPHNPrep is an independent study resource and is not affiliated with, endorsed by, or sponsored by the National Board of Public Health Examiners (NBPHE). Exam details are based on publicly available information and may change as the NBPHE finalizes the program. Always confirm current requirements with the NBPHE.