About ONCC


At ONCC®, we believe certification makes good oncology nurses even better.

ONCC provides the premier nationally accredited certifications for nurses in oncology and related specialties. Founded in 1984 as a non-profit organization, ONCC administered the first Oncology Certified Nurse (OCN®) examination in 1986. Today, ONCC offers eight credential programs and has more than 41,000 currently certified nurses.

All ONCC certification examinations are accredited by the National Commission for Certifying Agencies. NCCA is an independent organization that has identified the essential components of a national certification program and determines if credentialing organizations meet established standards based on those components. These standards are nationally recognized principles used by a variety of organizations for certification programs in diverse professions. NCCA accreditation indicates that ONCC programs have been evaluated by the Commission and meet or exceed all of its standards.

Our Mission

The mission of ONCC is to promote health and safety by validating competence and ensuring life-long learning in oncology nursing and related specialties.

Our Vision

Oncology care across the continuum is provided by oncology certified professionals.

Our Code of Ethics

The Code of Ethics sets forth values, ethical principles, and standards to which professionals aspire and by which their actions can be judged. The purpose of this code is to identify the moral obligations of all ONCC-certified nurses inherent in their professional roles. Specifically, ONCC-certified nurses are obligated to support and maintain the integrity of the profession of oncology nursing in order to promote the health and well-being of patients and families. Read the Code of Ethics.

Our Values

Values are our organizations’ guiding principles. They represent our core beliefs for the Oncology Nursing Society (ONS) and its family of affiliated corporations, including the Oncology Nursing Foundation, Oncology Nursing Certification Corporation.


The organization and its certificants exhibit integrity and earn trust through ethical behaviors and uncompromising professionalism to all parties in business, professional, and personal interactions.


ONCC and its certificants face every endeavor with creativity and knowledge. We strive to apply our broad perspectives consistently while leading the transformation of cancer care.


We, as an organization and as individuals, advocate on behalf of people with cancer to ensure their quality of life and their access to exemplary care throughout the continuum of life. We advocate on behalf of the nursing profession and the oncology specialty to ensure respect and recognition.


We strive to foster excellence in oncology nursing practice. We are committed to nothing less than excellence in our organization, certification processes, and the care of patients.


We respond quickly and effectively to the dynamic situations that impact oncology nurses and their care of patients with cancer.

DEI Commitment Statement

The Oncology Nursing Society (ONS), the Oncology Nursing Foundation (ONF), and the Oncology Nursing Certification Corporation (ONCC) are committed to supporting and advancing oncology nurses to deliver quality and equitable care to patients with cancer.  We know that diversity, equity, inclusion, and connection (DEIC) are critical to our efforts in supporting those who provide care for diverse patient populations. We define DEIC as:


Describes all the ways that individuals differ from one another, which includes race, ethnicity, and gender as well as age, differing abilities, military service, sexual orientation, gender identity, religion and beliefs, background, experience, and education.


Creates fair treatment and access by establishing and upholding policies and processes that remove and prevent the formation of barriers for all stakeholders who engage with ONS, ONF, and ONCC.


Fosters an environment where all stakeholders are able to participate fully and have a sense of belonging because they feel welcomed, respected, and valued


Fosters dynamic relationships with diverse stakeholders of mutual understanding, trust, and rapport to enhance individual and collective success in the organization, oncology care, and the oncology nursing profession.


Certified Nurses by the Numbers

As of July 1, 2024

OCN® - 32,072

CPHON® - 3,366

BMTCN® - 3,135

AOCNP® - 2,375

CBCN® - 980

CPON® - 541

AOCN® - 413

AOCNS® - 321

Total active credentials: 43,203

Contact Information


(US and Canada only)

Fax number:
412.859.6167 (new)