Personalized Care From
Award Winning Providers

Our Story

“A better Seattle anesthesia group”–Advanced Anesthesia Services’ CRNA’s are consistently ranked among the top anesthesia providers in Washington State and Oregon.   Continuing our tradition of excellent anesthesia providers, this year (2018) three of our CRNA’s achieved the honor of “Top CRNA in Washington” by Seattle Met Magazine.


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.


We changed all that. Filling that gap, we began partnering with amazing anesthesia providers. 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. While we focus on outpatient anesthesia and have developed expertise in that area, most of our providers maintain and improve their skills by working at some of the largest hospitals in our area. 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. 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 and 2018. 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.

Cheryl Carroll

Cheryl is a Certified Registered Nurse Anesthetist (CRNA) and has been providing safe, quality anesthesia care since 1990. She is a graduate of CAMC School of Anesthesia in Charleston, West Virginia and earned a Master’s degree in healthcare management from Loyola University in 2012. She is a member of Sigma Theta Tau International and the AANA. Cheryl lives in Bellevue, Washington with her son, Devin.

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 by Seattle Met Magazine.

Charlotte Simmons

Charlotte is a Certified Registered Nurse Anesthetist (CRNA). She earned a Bachelors of Science in Nursing from the University of Alberta in Edmonton, Alberta Canada. She later completed a Masters of Science degree and anesthesia clinical training at the University of Tennessee in Memphis in 2009. She is a member of the AANA and has well-rounded, varied anesthesia experience. Charlotte lives with her husband and two children in Bonney Lake, Washington.

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, daughter, and two kitty cats.  

Verity Caruso

In addition to competent care, Verity believes clear, compassionate communication with patients is vital to a positive anesthesia experience.  She is a  member of the American Association of Nurse Anesthetists and has experience in general, neuraxial, and regional anesthesia.  She enjoys volunteering and traveling, especially as they intersect on international surgical mission trips. Verity earned a Bachelor of Science in Nursing degree from Hawaii Pacific University in 1999 and a Master of Science in Nurse Anesthesia from Westminster College in 2014.

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 Seattle & Portland Since 2013

Voted Top Anesthesia Providers:
ⓒ 2018 Advanced Anesthesia Services