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
Path in
CRNA = nursing + ICU; CAA = premed bachelor's (no nursing); Anesthesiologist = medical school.
Autonomy
CRNAs can practice independently in opt-out states; CAAs always work under an anesthesiologist; anesthesiologists lead the team.
Where you can work
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 fitsScope 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.