Au.D. vs. Ph.D. in Audiology: Understanding the Difference
Understand how Au.D. and Ph.D. degrees differ in training, career paths, and what each means for the care you receive.
The 3 key takeaways
- Au.D. and Ph.D. degrees serve different roles — Au.D. audiologists provide patient care, while Ph.D. audiologists focus on research and advancing the science of hearing.
- Training paths are built for different outcomes — Au.D. programs emphasize hands-on clinical care, while Ph.D. programs center on research, specialization, and discovery.
- Most patients will see an Au.D.-trained audiologist — these providers are licensed to diagnose and treat hearing and balance conditions.
If you’ve been researching audiology, you may have seen two different degrees: Au.D. and Ph.D. Both are doctoral-level degrees. Both require years of training. But they serve very different purposes. The degree your audiologist holds can help you understand their role and whether they focus on patient care or research.
This article explains the difference between the two, including training, career paths, and what each degree means for patients.
The main difference: clinical care vs. research
The most important thing to understand about these two degrees is that they serve fundamentally different purposes. The key difference between these degrees is simple: clinical care vs. research.
The Au.D. (Doctor of Audiology) is a clinical doctorate. This is what most patient-facing audiologists have. Audiologists with an Au.D. are trained to evaluate patients, perform hearing tests, diagnose hearing and balance disorders, fit and manage hearing devices, and provide ongoing care and support. It’s the degree required for clinical practice in the United States.
The Ph.D. in audiology is a research-focused doctorate. Ph.D. audiologists usually do not provide routine patient care. Ph.D. audiologists typically investigate the mechanisms of hearing loss, test the effectiveness of clinical interventions, develop new diagnostic methods, and produce the peer-reviewed science that the entire field depends on. They often work in research labs, universities, or industry settings.
In short:
- Au.D. = patient care
- Ph.D. = research and science
How training differs between Au.D. and Ph.D. programs
The structural differences between the two programs reflect their different purposes at every level.
Au.D. training and clinical focus
The Au.D. is a four-year program that includes foundational science and complex clinical training, with the last year consisting of a full-time clinical externship, functioning much like a medical residency year. During this time, students are managing real patient caseloads under the supervision of licensed audiologists.
Ph.D. training and research focus
A Ph.D. in audiology or hearing science is focused on the production of original research and typically takes five to six years. Students work under a faculty adviser developing specialized expertise in a specific area of investigation like cochlear physiology, central auditory processing, hearing aid signal processing algorithms, pediatric language outcomes, and tinnitus neuroscience. The heart of the program is the dissertation: an original, independently conducted research contribution that advances knowledge in the field.
Clinical training is not typically a component of a stand-alone Ph.D. program. Ph.D. graduates are not prepared for independent clinical practice and do not hold the credentials required for it.
Au.D. vs. Ph.D.: side-by-side comparison
| Feature | Au.D. | Ph.D. |
|---|---|---|
| Primary purpose | Clinical care | Research |
| Typical length | 4 years | 5–6 years |
| Clinical licensure eligibility | Yes — required for practice | No — not a clinical degree |
| Career destinations | Clinical practice (private, hospital, VA, school, etc.) | University faculty, research institutions, industry R&D |
| Required for clinical practice? | Yes | No |
Au.D./Ph.D. dual degree: combining clinical care and research
The option to pursue a dual degree exists for students who want to both treat patients and contribute to research. A small number of research universities offer a combined Au.D./Ph.D. program, which integrates clinical training and original research and typically lasts five to six years.
Graduates of Au.D./Ph.D. programs are often called clinician-scientists. They are qualified to practice clinically and to conduct independent research, which positions them particularly well for academic faculty positions that combine clinical teaching, patient care, and a funded research program. These are the individuals who often lead the clinical research that shapes how audiology is practiced over time.
What this means for patients, according to an audiologist
Jessica Hinson, Au.D., part of our medical review team, says:
Most patients will see an Au.D.-trained audiologist in clinical settings. These providers are trained to evaluate hearing and balance, diagnose conditions, and recommend treatment.
In some settings — like hospitals or university clinics — you may also encounter Ph.D.-trained researchers studying topics like hearing aid performance, cochlear implants, or tinnitus treatments.
When you see “Au.D.” after your audiologist’s name, it means they have completed four years of doctoral-level clinical training, a supervised externship, a national licensing exam (Praxis), and the ongoing professional development requirements of state licensure.
The Au.D. credential is the profession’s assurance that the person examining your hearing or balance has been rigorously prepared to do so.
The bottom line
The Au.D. and Ph.D. are both doctoral degrees, but they serve different roles.
The Au.D. produces the clinicians who care for patients. The Ph.D. produces the researchers who advance the science those clinicians depend on. The combined Au.D./Ph.D. bridges both worlds.
Understanding the distinction helps patients appreciate what their audiologist’s credentials actually represent. Together, these roles help improve hearing care today — and drive the advances that will shape it in the future.
Frequently asked questions
Can a Ph.D. audiologist see patients clinically?
Not without additional credentials. To provide patient care, a Ph.D. audiologist would need additional clinical training (such as an Au.D.) and state licensure. Most Ph.D. audiologists work in research, academic, or industry settings rather than clinical ones.
Is the Au.D. considered a real doctorate?
Yes. The Au.D. is a recognized doctoral degree from accredited universities. It meets the same accreditation standards as other healthcare doctorates, such as M.D., Pharm.D., and D.P.T. The decision to move audiology to doctoral-level entry was made precisely to expand audiologists’ scope of practice.
Do Ph.D. audiologists earn more than Au.D. audiologists?
Not necessarily. Salaries vary based on the type of job. The type of degree matters less than the setting and experience of your provider.
Au.D. audiologists in private practice or specialized clinical settings can earn competitive salaries, particularly with experience and specialty certifications. Ph.D. audiologists in academic positions often earn lower base salaries than their clinical counterparts, though grant funding and industry consulting can supplement that significantly.
Should I see an audiologist with an Au.D. or a Ph.D.?
Most patients should see an audiologist with an Au.D. degree. Au.D.-trained audiologists are specifically trained to diagnose and treat hearing and balance conditions. Ph.D. audiologists typically focus on research rather than direct patient care, so they are less commonly seen in clinical settings.
How can I check an audiologist’s credentials?
You can verify an audiologist’s credentials with a few simple steps. Start by looking for “Au.D.” after their name, which indicates doctoral-level clinical training. You should also confirm they are licensed in your state by checking your state’s licensing board website.You can ask your provider directly about their training and experience — a qualified audiologist should be open and transparent. Verifying credentials helps ensure you’re receiving safe, qualified care.