Nurse practitioner education sits at an intersection that can be difficult to describe using familiar professional labels. Nursing is its own discipline, with attention to human wholeness, health and well-being, the relationship between people and their environments, and caring (Smith, 2019). Nurse practitioners also assess undifferentiated symptoms, develop differential diagnoses, diagnose disease, order and interpret tests, prescribe medications, and manage treatment. Those responsibilities require advanced preparation that builds on nursing while developing competencies specific to advanced practice (American Association of Nurse Practitioners [AANP], 2023; National Council of State Boards of Nursing [NCSBN], n.d.).
The terms nursing model and medical model are often used as shorthand for different disciplinary emphases rather than two rigid, universally defined systems of care. The distinction can help explain how professions developed and what they tend to emphasize, but it becomes less useful when it suggests that contemporary nurses and physicians work from completely separate bodies of knowledge. Nurse practitioner practice makes the limitations of that division especially visible.
The Nursing Perspective Is Broader Than “Holistic Care”
The nursing model is sometimes summarized by saying that nurses treat the whole person while medicine treats the disease. That description oversimplifies both professions.
Smith (2019) identified human wholeness, health and well-being, the human-environment-health relationship, and caring as recurring themes within nursing’s disciplinary perspective. The 2026 AACN Essentials similarly places person-centered care at the core of professional nursing education and situates the individual within family, community, environmental, and healthcare contexts (American Association of Colleges of Nursing [AACN], 2026).
Within that perspective, assessment extends beyond identifying symptoms or physiologic abnormalities. Illness and treatment occur within circumstances that can affect function, safety, coping, health behaviors, access to care, and the ability to carry out a clinical plan. Prevention, health promotion, education, advocacy, and care coordination therefore remain relevant alongside direct treatment of illness.
These considerations can have immediate clinical consequences. A pharmacologically appropriate medication may be inaccessible because of cost. A sound discharge plan may fail when transportation is unavailable. A treatment regimen may be unrealistic when a patient cannot understand the instructions, safely store a medication, or return for required monitoring. Calling this perspective “holistic” can obscure the more specific point that nursing considers the person receiving care within the circumstances in which health, illness, treatment, and recovery occur.
The Traditional Biomedical Model Does Not Describe All of Modern Medicine
The historical biomedical model emphasized biological explanations of disease and the identification of pathology. Engel (1977) famously criticized that model for inadequately accounting for psychological, behavioral, and social dimensions of illness and proposed a biopsychosocial model that incorporated those domains into the understanding of health and disease.
That history is important because the traditional biomedical model should not be treated as a complete description of contemporary medical practice. Modern physicians may incorporate prevention, behavioral health, shared decision-making, social circumstances, longitudinal management, and interdisciplinary care into diagnosis and treatment. The biopsychosocial framework itself emerged within medicine as an explicit challenge to a narrowly biological understanding of disease (Engel, 1977).
Diagnostic reasoning remains fundamental to medical practice. A patient presents with a problem, the clinician develops a differential diagnosis, gathers information through history and examination, uses diagnostic testing when indicated, and determines which explanation best accounts for the presentation and what treatment should follow. Nurse practitioners perform many of these same clinical functions, which is one reason a rigid nursing-versus-medical-model distinction becomes difficult to maintain in advanced practice.
The professions retain different educational pathways, regulatory structures, and professional identities while drawing from overlapping clinical knowledge.
Nurse Practitioners Have to Learn Diagnostic Reasoning
NP practice cannot be understood as bedside nursing with greater independence. NCSBN describes APRNs as registered nurses with graduate education who are prepared through education and certification to assess, diagnose and manage patient problems, order tests, and prescribe medications. APRN preparation and regulation are linked to graduate education, national certification, role, and population focus (NCSBN, n.d.).
Patients rarely arrive with a diagnosis already established. They present with dizziness, cough, abdominal pain, weakness, headache, abnormal bleeding, fatigue, shortness of breath, or another complaint with numerous possible explanations. The clinician has to determine which diagnoses are plausible, which dangerous possibilities require exclusion, what additional information is needed, and what should happen next.
Diagnostic reasoning therefore involves more than recalling the characteristics of individual diseases. It requires managing uncertainty, weighing competing explanations, interpreting findings in context, and deciding when additional testing, observation, treatment, consultation, follow-up, or escalation is appropriate.
Consider a patient presenting with headache. The NP cannot stop after characterizing the pain. The evaluation has to consider whether the presentation is consistent with a primary headache disorder while also identifying features that could indicate hemorrhage, infection, vascular disease, increased intracranial pressure, or another secondary cause requiring further evaluation. That reasoning draws on anatomy, physiology, pathophysiology, pharmacology, epidemiology, risk factors, physical examination, diagnostic testing, and an understanding of how the findings will influence management.
NP Education Builds on Nursing Without Replacing Advanced Practice Preparation
The phrase nurse practitioner reflects both the professional foundation and the advanced clinical role. AANP states that accredited NP graduate programs include didactic and clinical preparation that builds on nursing expertise while developing and documenting advanced clinical competency (AANP, 2023).
Prior nursing experience can contribute important context to that development. Nurses may enter NP education with experience assessing patients, recognizing changes in condition, communicating across disciplines, educating patients, coordinating care, navigating healthcare systems, and observing how illness and treatment affect patients in different settings. The type and depth of that experience vary considerably depending on the nurse’s previous roles.
The contribution of RN experience should not be overstated. Time spent practicing as an RN does not automatically establish competence in advanced differential diagnosis, selection and interpretation of diagnostic testing, prescribing, or management within an NP role. Those competencies require deliberate development through graduate education, supervised clinical experiences, feedback, study, and continued professional development.
The transition also changes the clinician’s scope of responsibility. RN practice requires substantial assessment and clinical judgment, while NP practice adds role-specific responsibility for developing differential diagnoses, establishing diagnoses, ordering and interpreting diagnostic studies, prescribing treatment, and determining management and follow-up within the NP’s scope of practice (NCSBN, n.d.). The nursing foundation can inform that reasoning without substituting for advanced-practice preparation.
Nursing and Medicine Share Clinical Knowledge Without Becoming the Same Profession
Healthcare knowledge does not divide neatly along professional boundaries. Pharmacology, patient education, prevention, evidence appraisal, communication, ethics, and shared decision-making are used across disciplines. Diagnostic reasoning is central to both physician and NP practice, while care coordination and attention to the circumstances affecting treatment are relevant throughout healthcare.
Shared knowledge does not erase professional distinctions. An NP practices advanced nursing and a physician practices medicine. Their educational pathways, licensure, certification, regulatory structures, and professional identities remain different. For APRNs, the Consensus Model explicitly links practice to graduate education, national certification, a defined APRN role, and population focus (NCSBN, n.d.).
A more useful analysis focuses on the responsibility being assumed and whether the clinician’s professional role, scope, education, supervised preparation, legal authority, and competence support it. This becomes especially visible in clinical management.
Managing pneumonia, for example, requires recognizing the likely diagnosis, assessing severity, determining whether testing is indicated, selecting treatment, and identifying reasons for escalation. An NP also has to consider whether the patient can obtain the medication, understands warning signs, can manage safely at home, and has an appropriate route to follow-up. Those considerations are not exclusive to nursing, but their integration with diagnosis and treatment is consistent with nursing’s broader disciplinary attention to the person, health, environment, and care (AACN, 2026; Smith, 2019).
The Models Are More Useful as Perspectives Than Boundaries
The nursing and medical models remain useful when they help explain disciplinary history and perspective. They become less useful when treated as borders that assign clinical knowledge to one profession or another.
NPs need a strong nursing foundation alongside substantial preparation in pathophysiology, differential diagnosis, pharmacology, diagnostic testing, treatment, and clinical management. Advanced practice requires those bodies of knowledge to function together. Developing diagnostic and treatment expertise does not require abandoning nursing’s disciplinary perspective, just as attention to psychosocial circumstances, prevention, or person-centered care is not exclusive to nursing.
Nurse practitioners practice advanced nursing within a distinct professional, educational, and regulatory framework. Clinical rigor comes from appropriate preparation and competence, not from relabeling the profession. Nursing also does not become less nursing when an NP diagnoses disease, orders diagnostic studies, or prescribes treatment.
Strong nurse practitioner practice requires diagnostic competence alongside an understanding of the person who will have to live with the diagnosis, treatment, and follow-up plan. The value of the nursing foundation is most visible when those dimensions of care remain integrated rather than treated as competing approaches.
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References
American Association of Colleges of Nursing. (2026). The Essentials: Core competencies for professional nursing education. https://www.aacnnursing.org/Portals/0/PDFs/Publications/Essentials-2026.pdf
American Association of Nurse Practitioners. (2023). Nurse practitioner education. https://www.aanp.org/advocacy/advocacy-resource/position-statements/nurse-practitioner-education
Engel, G. L. (1977). The need for a new medical model: A challenge for biomedicine. Science, 196(4286), 129–136. https://doi.org/10.1126/science.847460
National Council of State Boards of Nursing. (n.d.). APRN consensus model. https://www.ncsbn.org/nursing-regulation/practice/aprn.page
Smith, M. C. (2019). Regenerating nursing’s disciplinary perspective. Advances in Nursing Science, 42(1), 3–16. https://doi.org/10.1097/ANS.0000000000000241