Personalized Care From
Award Winning Providers

Our Story

Consistently voted Top Anesthesia Providers by Seattle Met Magazine–Advanced Anesthesia Services’ CRNA’s are ranked among the top anesthesia providers in Washington State.    Voted Top Anesthesia Provider nearly every year since 2013.

In early 2010 AAS began providing outpatient anesthesia to surgeons throughout the Puget Sound region. We quickly noticed that outpatient surgery facilities were being underserved in our area. Facilities often had to choose between contracting with the large, regional anesthesia groups with their expensive pricing and impersonal service, or using small, independent providers who lacked the resources or training needed to provide the true full service, high-quality anesthesia that small to medium-sized facilities demand. Since those beginnings, we have grown and gained in reputation and size and now work with some of the biggest names in the Puget Sound region. Although we have grown steadily over the years, we still stick to our roots, giving our facilities exceptional anesthesia services with unmatched flexibility and personal attention.

Imagine an anesthesia group that makes customer service a priority. We care about our patients and the facilites that we serve. “Service” is so important to us, we put it in our name. We aspire to provide a level of service to our facilities and our patients that far excedes standards for the industry using data to track and continuously improve the quality of our service. All of our providers are hand-picked, board-certified, and experienced in all areas of anesthesia. They have consistently been ranked among the best anesthesia providers in the area. Just as important, they are level-headed, compassionate, have positive attitudes, and are generally nice to be around. Our Nurse Anesthesiologists are adept at all types of anesthesia including procedural sedation, modern general anesthetia techniques, and regional anesthesia. We keep up on the latest research and techniques in order to provide cutting-edge, modern anesthesia.

While we’ve grown steadily since those first days, we still maintain the personal service you and your patients deserve. Adding new facilities at a steady pace over the years has given us the experience and resources needed to offer our surgeons and patients the absolute best anesthesia available. We have grown, but we still maintain the same core beliefs. We work hard to ensure the success of the facilities we serve, and we treat patients the way we would want to be treated, with respect and dignity.

Our Providers

Allyn Wilcock

Allyn is the owner and oversees clinical operations at Advanced Anesthesia Services as well as Northwest Ketamine Clinics. He has worked in healthcare for over 20 years and earned his Master’s degree and anesthesia training from Texas Wesleyan University in 2004. He is experienced in all types of anesthesia. He is passionate about providing the best patient experience for all patients AAS serves. He was voted top CRNA in Washington State 2013, 2018, 2019, and 2020. Allyn lives with his wife and children in Snoqualmie, Washington.

Christine Wilcock

Christine oversees the accounting and business development aspects of Advanced Anesthesia Services. She earned her accounting degree in 2010 and is experienced in all areas of medical accounting and billing. She is dedicated to our customers, ensuring the high-quality care our patients receive in the operating room continues through the billing and insurance payment process. Christine lives in Snoqualmie, Washington and has three children.

Heather Morris

Heather is a dedicated Certified Registered Nurse Anesthetist. She earned a Bachelors of Arts degree from the University of Washington, a Bachelors of Science in nursing from Seattle University and a Master’s of Nursing degree from Oregon Health and Science University in 2012. She has specialized training in ultrasound-guided regional anesthesia and obstetrics. Heather prides herself on providing personalized care and has a holistic approach to each individual’s needs. She resides in Edmonds, Washington. Heather Morris was voted top CRNA in Washington State 2016 and again in 2018 by Seattle Met Magazine.


Jessica Hammond

Jess is an experienced Nurse Anesthetist (CRNA), and has worked with Advanced Anesthesia Services since 2013. She earned her Master’s and Doctoral degrees from Virginia Commonwealth University in 2010 and 2011, respectively. She is a member of the AANA and has varied anesthesia experience. She enjoys living in the Pacific Northwest and loves her job!

Quyen Lee

Quyen is a compassionate CRNA. She graduated cum laude from Seattle University in 2002. She later completed her Masters of Science degree and anesthesia training from the University of North Dakota in 2011. She strives to provide safe, quality and collaborative anesthesia care for all patients throughout their surgical experience. Quyen’s research on predicting difficult airways has been published internationally. Quyen enjoys traveling, volunteering abroad, and spending time with her family. She has been a resident of Washington State for over 30 years.  Quyen was named “Top CRNA in Washington” in 2018 and 2019 by Seattle Met Magazine.

Sarah Carter

Sarah Carter is a CRNA transplant from the Northern California Kaiser system.  She received her Bachelors of Science degree from Santa Clara University, her BS in Nursing from Pace University in New York City, and her Masters of Science in Nursing from Samuel Merritt University in Oakland, CA.  With experience from trauma, to neurosurgery, to obstetrics, her goal is to provide compassionate, safe anesthesia that makes her patients feel happy to be under her care.  She’s happy to be living on the eastside with her husband, children, and two kitty cats.  


Rachel Sutherly

Rachel Sutherly is a CRNA who has worked in healthcare since 2008, receiving her Master’s degree and anesthesia training from Drexel University in 2017. She takes pride in tailoring the anesthetic plan to her patients’ individualized needs and working together with the entire surgical team to ensure excellent outcomes. When not at work, she enjoys hiking, traveling, and spending time with family and friends. She has recently moved to Seattle with her husband, two dogs, and one cat.

Thomas Nigro, Jr.

Tom is a driven individual and supportive teammate. He received a Bachelor of Science degree in Biology from John Carroll University before completing his nursing training, Masters of Science, and Doctor of Nursing Practice degree from DePaul University. Tom’s CRNA training was through NorthShore University HealthSystem School of Nurse Anesthesia. During his time at NorthShore he researched the topic of Substance Use Disorder and his work has subsequently been published. Tom recognizes that each person is unique. His careful examination of patient needs, and willingness to utilize progressive anesthesia practices provide for an individualized and excellent perioperative experience

James Prince

James Prince is an incredibly talented and compassionate CRNA from Dallas, Texas. He developed a strong work ethic both in the classroom and on the field earning the All American Academic student athlete honors while studying nursing and playing football in college. After obtaining his BSN from Stephen F. Austin University in 2005, James worked in the Cardiac and Neuro ICUs of Parkland Hospital in Dallas for nearly 5 years. He then decided to continue his studies at the University of Miami where he obtained his MSN in 2012. James brings a wealth of knowledge and experience in trauma, obstetrics, and general anesthetics and takes pride in his ability to tailor his anesthetic plan to meet the needs of each patient and ensure the best outcomes for all. He is honored to be a part of the team and considers it a privilege to provide quality care for those in need.

Our goal is to make your anesthesia services easy, leaving you to focus on your patients and your business. Providing superior anesthesia providers is only the beginning.


Phone 425-615-6100
Fax 425-256-3250

Mailing Address

35302 SE Center St
Snoqualmie, WA 98065

Serving Western Washington Since 2013

Voted Top Anesthesia Providers:
ⓒ 2023 Advanced Anesthesia Services