Nonphysician practitioners' scope of practice is largely dictated by state laws and regulations and is also impacted by other factors such as employment agreements, practice setting, and billing requirements of Medicare and other payers. Solid working knowledge of the statutes and regulations for each state in which the clinician practices is the essential first step in a successful working relationship between physicians and nonphysician practitioners. Maintaining this knowledge can be an ongoing challenge for risk managers, physicians, and nonphysician practitioners alike, given the dynamic nature of such laws and regulations. In addition to ensuring current working knowledge of applicable laws and regulations, several other strategies are important to promote communication, ensure patient safety, and decrease potential risk and liability.
Although the term "nonphysician practitioner" has been used to refer to a variety of healthcare professionals, including but not limited to certified nurse-midwives, certified registered nurse anesthetists, and clinical nurse specialists, for the purposes of this Guidance Article, it is used to refer exclusively to nurse practitioners and physician assistants.
Nurse practitioners and physician assistants are vital parts of the primary care workforce. Over 60% of nurse practitioners practice in primary care, and nurse practitioners constitute about 20% of the total primary care workforce (Goodell et al.; Poghosyan et al.). Reliance on nonphysician practitioners is expected to grow as the Patient Protection and Affordable Care Act expands access to care, the shortage of primary care physicians continues to grow, and baby boomers enter the aging population (Jones and Moses). The Institute of Medicine (IOM) and national professional organizations are calling for expansion of the nurse practitioner workforce in primary care. IOM notes that state scope of practice laws, and not education and training, dictate the services that nurse practitioners are allowed to perform and recommends that nurse practitioners practice to the full extent of their preparations. To help nurse practitioners fill the growing primary care shortage, IOM recommends that nurse practitioners achieve higher education levels and calls for doubling the number of nurses with doctorates by 2020. (Cassidy; Chism; Poghosyan et al.)
State Regulation
Although regulation of physicians' medical practice (i.e., full authority to diagnose and treat all conditions) is fairly consistent from state to state, regulation of physician assistants, and especially nurse practitioners, varies significantly. For example, although some states require physician supervision of nurse practitioners and others permit nurse practitioners to practice without any physician supervision, many states fall in between. This may result in a requirement for collaboration or a requirement for supervision regarding certain aspects of prescriptive authority, for example. (Cassidy; Goodell et al.)
Scope of practice and professional roles of nonphysician practitioners are determined by state laws and state regulatory boards and are addressed in employer policies, procedures, and protocols. Compliance with state laws and regulations can be particularly challenging due to ongoing legislative initiatives.
The roles and responsibilities of nonphysician practitioners are evolving due to unmet physician demand, particularly in primary care. Proposed changes for advanced practice nurses and physician assistants were among the most popular scope of practice–related legislative measures in recent years (NCSL). More than 40 states have made changes to physician assistant practice requirements, including removal of an Indiana requirement that the supervising physician be in a contiguous county to the physician assistant and the removal of a Kentucky requirement for on-site supervision of physician assistants for the first 18 months of their practice. (Westgate) Additionally, following six years of legislative debate, Nevada recently allowed nurse practitioners to practice independently. The new law permits nurse practitioners with at least two years of experience to set up practice, open autonomous health clinics, and provide the same range of primary care services as physicians do. (Vestal)
The administrative requirements of interstate practice are another consideration, as nonphysician practitioners gain expanding responsibility for the care of patients in more than one state. Nonphysician practitioners working for large providers that have multiple facilities must often cross state borders to carry out patient care, which makes it necessary for the clinician to have multiple state licenses, even though he or she may work for only one provider. (Benesch and Hyman)
This Guidance Article provides an overview of state laws that dictate nonphysician practitioner scope of practice; Web Resources to assist risk managers, physicians, and nonphysician practitioners in their efforts to stay abreast of regulatory requirements; and practical strategies to promote communication and patient safety among physicians and nonphysician providers while decreasing risk and potential for liability.
Overview of Professions
Nurse Practitioners
Nurse practitioners are licensed, independent clinicians who practice autonomously and in collaboration with other healthcare professionals in ambulatory, acute, and long-term care as primary and/or specialty care providers (AANP). They earn a minimum of a graduate nursing degree in preparation to provide direct primary care or general medical care to patients in a broad range of health services and practice with a high degree of professional autonomy. (Benesch and Hyman) Nurse practitioners are authorized to prescribe drugs in all 50 states, but with variations such as the ability to prescribe controlled substances and requirements for physician cosignature (ACP).
Nurse practitioners hold independent licenses to practice nursing; however, individual state practice acts govern specific aspects of practice, with regulations that vary considerably from state to state (ACP). For example, some states require no formal practice relationship between nurse practitioners and physicians, allowing nurse practitioners to provide care without any physician involvement. However, other states require a collaborative or supervisory relationship. (ACP; Poghosyan et al.) It is therefore critical for both physicians and nurse practitioners to have a solid working knowledge of the practice act(s) for the state(s) in which they practice. Refer to "Web Resources" for the American Association of Nurse Practitioners' scope of practice resources, including a map of nurse practitioner scope of practice (classified as "full," "reduced," or "restricted") and links to individual state laws, regulatory bodies, and professional organizations.
Common aspects of nurse practitioner practice typically addressed in state practice acts include the following (Barton Associates):
- Autonomous practice
- Eligibility to act as a primary care provider
- Prescriptive authority
- Ability to order physical therapy
- Authority to sign death certificates, handicap parking permits, and workers' compensation claims
See "Web Resources" for an interactive guide to scope of practice laws for nurse practitioners with specific information on the aspects mentioned above. Note: The guide is published by a for-profit staffing agency. ECRI Institute does not specifically endorse this or any such service; the link is provided solely as a source of useful information.
Physician Assistants
In contrast to the varying degrees of autonomy under which nurse practitioners practice, physician assistants provide medical services exclusively under the delegation of physicians; they have no authority to function independently or to provide services except as assigned by and under the auspices of a supervising physician (Benesch and Hyman). Four parameters determine and guide the scope of practice for individual physician assistants: state law and regulation, education and experience, facility policy, and the needs of the patients at the practice (AAPA "Issue Brief"). The impact of the supervising physician's scope of practice on the role of physician assistant practice is addressed by individual state laws; generally, however, supervising physicians may only delegate to the physician assistant tasks and procedures that are within their own scope of practice (Fla. Admin. Code R. 64B8-30.012; 49 Pa. Code § 18.151[b]). For example, the physician assistant's scope of practice is limited to the medical specialty of the supervising physician (e.g., cardiology, dermatology) (California Department of Consumer Affairs).
Physician assistants first earn a bachelor's degree and then complete a two- to three-year physician assistant program that typically culminates in a master's degree (AAPA "How to Become"). They must pass a national certification exam in order to be eligible for state licensure and must pass a recertification exam every six years. No internship or residency is required in physician assistant training, and practice specialty is determined by that of the supervising physician. Physician assistants have delegated prescriptive authority in every state and the District of Columbia (ACP; HPIX).
Supervision is a critical aspect of the relationship between physician assistants and the physicians with whom they work. As with most aspects of nonphysician practitioner roles and responsibilities, individual state laws set exact requirements. However, the general spirit of the supervisory arrangement as described in the
Medicare Benefit Policy Manual places final responsibility with the physician: "The PA's [physician assistant's] physician supervisor . . . is primarily responsible for the overall direction and management of the PA's professional activities and for assuring that the services provided are medically appropriate for the patient." (CMS)
Each state sets its own supervision requirements, and although supervising physicians are not necessarily required to be physically present when services are rendered, the physician and the physician assistant must be in contact to ensure patient safety and to enable the physician assistant to consult with the physician whenever needed. As stated by the American College of Physicians, "It is important to remember that the physician is ultimately responsible for the care of the patients" (ACP). One example of appropriate supervision, as defined by Pennsylvania state law, includes the following (49 Pa. Code § 18.122):
- "Active and continuing overview of the physician assistant's activities to determine that the physician's directions are being implemented."
- "Immediate availability of the supervising physician to the physician assistant for necessary consultations."
- "Personal and regular review within 10 days by the supervising physician of the patient records upon which entries are made by the physician assistant."
Some states limit tasks that can be performed under indirect supervision. For example, in Florida, among other limitations, physician assistants may not interpret laboratory tests, x-rays, or electrocardiograms without the supervising physician's interpretation and final review (Fla. Admin. Code R. 64B8-30.012).
Still other states have moved away from defining scope by regulation, emphasizing the role of the supervising physician instead. For example, Wyoming state regulations do not define specific competency or skill but rather assign responsibility to the physician to evaluate whether the physician assistant performs "with similar skill and competency" in their assigned duties as the physician. (State of Wyoming Board of Medicine)
Given the individual nature, wide variety, and continual evolution of state practice acts, physician assistants and their supervising physicians must maintain a solid working knowledge of the regulatory landscape for each state in which they practice. See "Web Resources" for a link to a summary of state practice acts maintained by the American Academy of Physician Assistants.
Required by law, a written "practice agreement" between a physician assistant and a supervising physician describes how the physician assistant will practice. Practice agreements set forth clinical parameters such as core competencies and delegated tasks, as well as administrative aspects such as the plan for supervision. Individual practice agreement forms can generally be found in online searches for the state name and "physician assistant practice agreement." See "Web Resources" for selected examples of physician assistant practice agreements.
Supervision ratios are also dictated by state law and vary in the number of physician assistants that a physician is permitted to supervise. For example, Pennsylvania limits each physician to two, while California allows up to four physician assistants to be supervised by a single physician. (49 Pa. Code § 18.152[b][2]; California Department of Consumer Affairs)
See "Web Resources" for the American Academy of Physician Assistants' web page "Employing a PA," which contains a variety of resources, including a guide for new physician assistant employers, a credentialing service, and a competency assessment.
Professional Liability Issues
Tort Theories of Liability
Although utilizing nonphysician providers can increase access to care, productivity, and revenue, it also adds an additional layer of professional responsibility and potential liability for the physician (Moses and Feld). In cases of alleged negligence, nonphysician practitioners may be held accountable for their own actions, and physicians and medical practices may be held accountable as well under various theories of direct and derivative tort liability (HPIX).
Five common errors have been identified in professional liability claims against nonphysician practitioners (HPIX; Moses and Feld; Page):
- Inadequate examination, which is typically associated with a rushed exam and/or patient interview.
- Failure to diagnose, in which the nonphysician provider may be uncertain or misinterpret information about the diagnosis. Root-cause analysis may indicate that failure to diagnose or delayed diagnosis is directly attributed to inadequate supervision (see
Diagnostic Error: Failure to Order Arterial Ultrasound; $5M Awarded for Amputation for an example of one such case).
- Failure to make timely referral to a physician, in which the nonphysician provider may attempt to treat complex conditions beyond his or her training or skill.
- Negligent misrepresentation, in which a patient is "credibly unaware" that the provider is not, in fact, a physician.
- Lack of adequate supervision, in which direct supervisors fail to effectively watch over the work of nonphysician practitioners, which is more likely to occur in larger practices with multiple physicians.
In addition to liability for negligent supervision and liability for their own negligent action or inaction in caring for the patient, physicians working with nonphysician practitioners can also be found vicariously liable (i.e., the physician is found liable for the acts of the nonphysician practitioner) under a theory of agency, such as
respondeat superior, which comes into play when the physician employs the nonphysician practitioner. Physician-employers may also be held directly liable for negligent hiring practices (e.g., the physician hires a nonphysician practitioner who they know, or should have known, lacked the requisite education, training, and/or skill). (HPIX)
Claims Studies
In a study of professional liability claims paid on behalf of nurse practitioners for the 10-year period concluding in 2008, it was found that average indemnity and legal expense claims increased through the 10-year period; that the medical office experienced the highest number of claims, by setting; and that, although rare, scope of practice–related allegations were associated with the highest average paid indemnities. (NSO "Nurse Practitioners Are") A subsequent study of the five-year period ending in 2011 found that the most frequent allegations against nurse practitioners involved failure to diagnose, failure to provide proper care, and medication prescribing errors (NSO "Nurse Practitioner 2012").
While the overall frequency for malpractice payments on behalf of physician assistants has been found to be "low," review indicates themes in claims against this group: about half of such claims are related to diagnosis issues, and most cases also involve the supervising physician. Additionally, one study found that although the frequency of payments on behalf of physician assistants was lower than that for physicians, the average payment amount was higher. (Jackson et al.; Page)
Lawsuits
Lawsuits against nonphysician providers, while relatively rare, virtually always include the supervising physician (Page). They most typically include allegations of inadequate supervision and/or practice beyond the scope of training, which can manifest as failure to diagnose and failure to follow up (Crane). Different levels of education and training, as compared with that of physicians, do not change the risk: from a malpractice standpoint, any breach of the standard of care creates potential for a lawsuit (Jones and Moses). For an example of how the roles of physicians and physician assistants can manifest in a lawsuit, see
Liability: Physician Assistants Not Held to Same Standards as Physicians.
Settlements and jury awards against nonphysician providers accused of malpractice can be significant. For example, a Pennsylvania jury awarded a $3 million verdict to a patient who developed a brain abscess, requiring surgery and resulting in permanent disability, after a physician assistant failed to diagnose her sinus infection. In addition to the physician assistant's negligent failure to diagnose, it was found that the supervising physicians failed to adhere to their written agreement for working with physician assistants. (Reed)
Such lawsuits are particularly troubling in light of the concern that as a group, nonphysician practitioners tend to be underinsured for professional liability coverage (Jones and Moses). This is an evolving issue that has been addressed by some state legislatures. However, requirements, if any, vary by state and profession; current working knowledge of the applicable state law is essential. For example, in 2014, Pennsylvania enacted a requirement that physician assistants carry $1 million in professional liability coverage per occurrence (49 Pa. Code § 18.146). In Florida, nurse practitioners are required to carry $300,000 in aggregate coverage, although there is also an exception process that could apply depending upon the employment arrangement (Florida Board of Nursing).
Strategies for Oversight and Communication
Ensure Familiarity with State Law
A solid working knowledge of the applicable state law and regulations will provide the practical basis for clinical and administrative aspects of the relationship, such as criteria for licensure, written agreements, responsibilities of supervising and collaborating physicians, liability coverage requirements, role of nonphysician practitioners, and prohibitions upon both nonphysician practitioners and physicians.
Hiring and Contracting
Proactive discussion regarding the prospective nonphysician practitioner's intended role within the practice will ensure that all expectations (e.g., responsibilities, scope of practice) align appropriately with their training, skill, knowledge, and comfort level (ACP). This discussion should not be limited to the nonphysician practitioner and supervising physician (if applicable) but rather should include office staff and support personnel.
Credentialing and Privileging
The importance of careful credentialing of all prospective employees cannot be overstated, considering, for example,
Khan v. Medical Board of California, in which a physician's medical license was revoked for aiding the unlicensed practice of medicine by employing an individual falsely claiming to be a physician assistant. In this case, the court affirmed physicians' responsibility in credentialing, refuting the defendant physician's claim that he had been misled by stating that if a "practicing physician" could not properly verify licensure, the "average person seeking medical care" would have no hope of doing so. (Khan v. Med. Board of California)
Leadership and Training
Physicians must take an active leadership role, encouraging communication and modeling the behavior they wish to see in terms of patient care, documentation, and professional interactions (HPIX). Physicians should be mindful that nonphysician providers may be hesitant to "disturb" their supervising physician. It is important that both parties recognize the collaborative nature of the relationship and work to eliminate any underlying apprehension. (Page)
Physician practice leaders recommend that communication between physicians and nonphysician practitioners needs to become more "transparent," emphasizing the importance of physicians investing time with their staff, training them on their individual approach (Marbury).
Patient Notification and Education
Patients must always know whether they are being seen by a physician or nonphysician provider. Surveys have found that many patients erroneously think that the nonphysician practitioners treating them are physicians, indicating a need for concerted efforts to educate patients about collaborative care models (Marbury; Page). Additionally, state law typically requires appropriate identification and proactive patient notification.
Protocols
Standards should be clarified and documented with clear written protocols, including with regard to lines and methods of communication, scope and limitations of practice, and locations of practice. Hiring contracts should also include the signatures of the physician and nonphysician provider indicating their understanding and agreement of the above. (Page) Many states require the development of these protocols, and some require approval by the state medical board. (AMDA) See "Web Resources" for examples of nurse practitioner and physician assistant protocols.
Supervision
The efficiencies and productivity that can result from collaborative care arrangements with nonphysician practitioners must be balanced with the organizational burdens of supervision. Although an individualized plan takes the training and experience of the nonphysician practitioner into account, supervision should never consist merely of passive oversight but rather always require the active and continuous effort of the supervising physician to direct and review the nonphysician practitioner's work, records, and practice to ensure that directions are understood and that appropriate treatment is provided. (AMDA) See
Negligence: Improper Supervision of Blood Thinner Leads to Death for a case study describing a patient death that was blamed on inadequate supervision of a nurse practitioner. See "Web Resources" for additional strategies for supervision of nonphysician practitioners:
Action Recommendations
- Ensure familiarity with state law. Refer to "Web Resources" in the discussion
Overview of Professions for links to databases of state laws for nonphysician practitioners.
- Educate the entire practice team, including office staff and support personnel, about the nonphysician practitioner's roles and responsibilities.
- Ensure that employment contracts, which form the basis for the nonphysician practitioner's professional duties, reflect the parameters of any applicable written agreement.
- Ensure that contracts reflect compliance with state laws for scope of practice and supervision.
- Ensure that all parties have appropriate professional liability insurance, within the requirements of any applicable state laws.
- Utilize the appropriate state agency and any applicable specialty societies for the specific profession to verify both licensure and specialty certifications.
- Conduct thorough background checks and reference reviews.
- Approach periodic recredentialing with equal diligence.
- Strive to create an environment in which nonphysician providers are encouraged to consult with supervising physicians.
- Invest time in comprehensive, hands-on training of nonphysician providers, including verification of competencies.
- Encourage interaction and dialogue, both proactive and problem-based.
- Develop a strategy for patient communications (e.g., signage, practice websites) to address how nonphysician practitioners fit into the practice and what services they provide.
- Require nonphysician practitioners to introduce themselves as such and be proactive in the correction of any misunderstandings.
- Require support staff to be equally clear in identifying nonphysician practitioners.
- Utilize practical supports such as clear identification badges with appropriate credentials and different "uniforms" (e.g., white coat) for physicians and nonphysicians.
- Ensure continuous availability of direct communication between the nonphysician practitioner and the supervising physician, whether in person or by electronic communications.
- Reserve adequate time in the physician's schedule for chart review and both planned and ad hoc meetings with the nonphysician practitioner.
- Prepare for potential unusual circumstances with an emergency plan and designation of an alternate physician supervisor.
- Document findings and recommendations of supervisory sessions.