Austin Regional Clinic (ARC) doctors, advanced practice clinicians (APCs), staff, and leadership are committed to providing our community with high quality convenient care. One of the ways we demonstrate this priority is through our online transparency.
You can review our doctor and APC ratings and comments on our web site with the confidence that they are all based on verified visits. We post all patient feedback relevant to the entire visit and only refrain from posting comments that are libelous, profane, or those that risk the privacy of our patients.
The below guide provides details about how we collect and share our patient feedback.
ARC partnered with Press Ganey to collect patient feedback about their doctor’s or APC’s visit. We gather feedback from text surveys that are sent after the visit. Press Ganey is an independent third party customer feedback company that provides the technology to collect the feedback and display ratings and comments on our web site. All ratings are submitted by actual patients and verified by ARC.
Patients for whom we have a mobile phone number receive a text survey within two hours of checking in for their visit. Patients are asked to complete the survey and provide ratings and comments regarding their experience at different touch points of their visit. We use this feedback to recognize doctors and staff, identify issues we can correct, and enhance our care.
ARC posts all positive and negative patient feedback that is relevant to the entire visit. We refrain from posting comments that are libelous, profane, or those that risk the privacy of our patients.
ARC asks questions that touch on the overall patient experience related to their visit. Anyone seeking detailed information about each question can view the ratings for each specific question on the Reviews tab on the doctor or APC bio page on the website. We calculate our doctor and APC star ratings based on the responses to question number six below. We calculate our location star ratings based on the responses to all the below questions.
Since more recent data provides a more accurate picture, we require a minimum of 30 patient surveys per doctor in the last 12 months before we post a physician’s rating.
ARC physicians and staff review all comments and act to rectify issues. Since the purpose of the feedback is to allow us to improve the overall patient experience, we display the last 90 days of comments which are the most relevant for the practice.
No. Only patients having an outpatient visit by an ARC physician or APC receive a survey. The results are based entirely from patients who have actually been treated by the physician or APC in our clinics.
Comments are reviewed and approved prior to being published to the website. If a comment contains any personally identifiable information, that information will be removed from the comment.
Dr. Darnall grew up in Jackson, MS. In his free time, he enjoys spending time with his wife and two daughters and their two dogs. Dr. Darnall likes to exercise by swimming and trail running, and he enjoys cooking and traveling with friends. His favorite Central Texas spot is Barton Springs pool.
In school, my favorite courses were in the biological sciences. I loved learning about the natural world and scientific discoveries, but I was not drawn to research. Medicine offered a practical application for science that would let me care for patients and continue to learn. I became fascinated with the brain and neurophysiology. Sleep medicine emerged as a new frontier in neuroscience that has direct and indirect effects on quality of life, performance, and overall health. My approach is to be kind, to listen, to advise, and to collaborate with my patients in selection of tools that provide the best means of symptomatic improvement.
ARC sleep neurologists order and interpret diagnostic sleep studies, including polysomnography, multiple sleep latency tests, and home sleep tests.
ARC sleep specialists provide care for a variety of sleep disorders, including obstructive and central sleep apnea, narcolepsy, idiopathic hypersomnia, parasomnia, REM sleep behavior disorder, sleep terrors, sleepwalking, restless legs syndrome, periodic limb movement disorder, circadian rhythm disorders, and insomnia, and order at-home or in-lab sleep studies when appropriate.
737-247-7200 Fax: 512-406-7368
Rating based on “Did the doctor or advanced practice clinician (APC) provide the care you expected?”
Dr Darnall is thoughtful, patient, and gives you time to q&a in real time. He's an expert in his field but also knows the patient is scared and needs to be heard. This guy is good.
Due to an earlier patient’s tardiness, our appointment was a bit delayed but staff kept us informed. Our care was excellent. Staff went beyond expectations to care for us and get the help we needed
Was early and they saw me early. Much appreciated!
Dr Darnall is a very knowledgeable & kind person! He answered all of my questions in detail. I’m very happy with my interaction with him.
I was very impressed with the doctor and very hopeful that he will help me ..
The physician was extremely kind and made sure to throughly explain everything to me.
Welcome to the ARC Neurology team at ARC Four Points!
February 18, 2026 1 min read
Surgical clinicians are specially trained and licensed physicians who can perform surgical procedures to treat injuries, diseases, and other health conditions. Surgical clinicians can also diagnose and manage medical conditions, oversee pre-operative and post-operative care, and work closely with your primary care team to coordinate your care.
Non-surgical clinicians are highly trained and licensed physicians, physician assistants, and nurse practitioners who specialize in diagnosing, managing, and treating medical conditions through non-surgical medical care.
Children (ages 3-11) Adolescents (ages 12-18) Toddlers (ages 0-2)