Compare the paths
CRNA vs. CAA vs. Anesthesiologist
The U.S. has three main anesthesia providers. Here's how they differ in training, scope, autonomy, where they can practice, and pay — so you can choose the right path.
All three deliver anesthesia care, but the paths and practice rules differ a lot. CRNAs come from nursing; Certified Anesthesiologist Assistants (CAAs) come from a premed background; anesthesiologists are physicians.
Side-by-side comparison
| CRNA | CAA | Anesthesiologist | |
|---|---|---|---|
| Provider type | Advanced practice registered nurse (APRN) | Anesthesiologist Assistant (master's-level) | Physician (MD/DO) |
| Degree | Doctor of Nursing Practice (DNP; required for new CRNAs since 2025) | Master's (Anesthesiologist Assistant) | MD/DO + anesthesiology residency |
| Prerequisite background | BSN + RN license + critical-care (ICU) experience | Bachelor's with premed prerequisites (no nursing required) | Bachelor's + medical school |
| Certification | NBCRNA (National Certification Exam) | NCCAA | American Board of Anesthesiology |
| Scope | Full anesthesia care | Anesthesia care within the Anesthesia Care Team | Full medical + anesthesia scope; can medically direct |
| Autonomy / supervision | Can practice independently in opt-out states (28+); rules vary by state | Always works under the direction of an anesthesiologist (Care Team model) | Independent; oversees care teams |
| Where they can practice | All 50 states | ~20 states + D.C. (where licensed/recognized) | All 50 states |
| Time to become | ~7–8+ yrs (BSN → ICU → DNP) | ~6–7 yrs (bachelor's → 24–28 month master's) | ~12+ yrs (bachelor's → med school → residency) |
| Median pay | ~$223,000 (BLS 2024) | Comparable to CRNAs; varies by state/setting | ~$400,000+ |
Key differences
CRNA = nursing + ICU; CAA = premed bachelor's (no nursing); Anesthesiologist = medical school.
CRNAs can practice independently in opt-out states; CAAs always work under an anesthesiologist; anesthesiologists lead the team.
CRNAs in all 50 states; CAAs limited to ~20 states + D.C.; anesthesiologists everywhere.
Choosing your path
Boost supports both the CRNA and CAA application paths — score your profile, find best-fit programs, and prep your application end to end.
See which path fits →Scope of practice and state recognition change over time. Verify current rules with your state board, the AANA (CRNA), and the AAAA/NCCAA (CAA). Salary figures are approximate and vary.