Which of the following is NOT grounds for denial of certification or disciplinary action?

Failure to obtain a RRT credential from the NBRC within 12 months of graduation is not grounds for denial of certification or disciplinary action because it pertains more to the individual's timeline for professional development rather than a direct violation of ethical or legal standards that would impact patient care or public safety.

The certification process does set a requirement for obtaining the RRT credential, but failing to achieve it within a specific timeframe does not necessarily demonstrate a lack of competency, ethical violations, or behavior that could endanger patients. Instead, it reflects a delay in meeting credentialing requirements.

In contrast, the other options represent serious issues that directly relate to a person's ability to practice safely and ethically as a respiratory care practitioner. Discipline by a licensed hospital points to potential misconduct or professional behavior issues, a felony conviction indicates serious legal issues, and habitual substance abuse poses a direct threat to patient care and safety.