Doctor examining patient's back pain with hands while patient holds lower back in discomfort

SCHEDULING MADE EASY

Choose your provider, pick your time, and book online. No back-and-forth needed.

To book an appointment with your preferred provider, please visit their profile on our website and book directly at the link found under their photo!

Surgeons in blue scrubs and masks collaborate in an operating room during surgery.


Proliance Surgery Center at Valley

Named Best Ambulatory Surgery Center by U.S. News for 2025

Proliance Surgery Center at Valley has been named one of the 2025 Best Ambulatory Surgery Centers fororthopedic and spine care by U.S. News & World Report. Out of thousands of facilities reviewed nationwide, only aselect few earned this honor — Proliance Surgery Center at Valley among them.

a set of keys

POA: Named Top Orthopedic & Surgical Care Provider in WA!

We are excited to announce that we have been named one of the top orthopedic and surgical care providers in Washington by Castle Connolly for 2025!

a group of surgeons performing surgery


Proliance Surgery Center at Valley

Recognized as Top 20 ASC Performing Most Knee Replacements!

POA is among the top 20 ASCs that performed the most total knee replacement procedures in U.S. in 2022, click through to view the entire list!

Introducing Our Newest Providers

Smiling middle-aged man in gray suit and blue tie against a solid blue background.

Matthew Lyons, MD

Matthew Lyons, joins Proliance Orthopedic Associates in July, 2026 and brings a depth of expertise to our Shoulder and Sports Medicine teams. Dr. Lyons currently works in both our Renton and Maple Valley clinic locations.

To book an appointment with Dr. Lyons, click the link below!

Book An Appointment
Smiling bald man in black sweater and light blue shirt against a solid blue background.

Tim Stensby, PT

Tim provides care for a wide range of conditions and has experience working with student athletes, including enhancing running techniques for track and field participants.

To book an appointment with Tim, click the link below!

Book An Appointment

UNMATCHED
SPECIALIZED
CARE

Find the care you need, when and where you need it, with the region's most comprehensive orthopedic care.

Doctor in suit explaining spine model to patient inside bright medical office with Proliance logo

Relief for Chronic Back Pain



At Proliance Orthopedic Associates, we’re proud to provide compassionate, patient-centered orthopedic care that helps you get back to doing what you love. In this video, Dr. Gregorio shares how our team combines advanced techniques, surgical precision, and personalized treatment to restore mobility and improve quality of life.
Doctor explaining spine model to female patient in a bright office with window blinds and greenery outside.

Overcoming Debilitating Neck Pain



When pain limits your movement, every step can feel uncertain. In this video, Alicia shares how the specialists at Proliance Orthopedic Associates helped her return to an active, fulfilling life through expert orthopedic care and genuine compassion.
Orthopedic doctor in scrubs consulting a seated patient in a modern clinic room with Proliance logo visible.

A Surgery Center with Care Built Around You



At our Ambulatory Surgery Center (ASC), advanced technology meets personalized care. Our board-certified surgeons and dedicated staff deliver world-class orthopedic procedures in a comfortable, patient-focused environment — helping you heal faster and return to the activities you love.

HELPFUL RESOURCES

PATIENT SUCCESS STORIES

View more

After years of painful arthritis keeping them from the activities they enjoy in life, VOA patients share their joint replacement journeys.Edward James, a retired high school principal, lived with the pain of arthritis for nearly four years before...

- Edward

I injured my right knee and ankle while racing motocross back in August of 2014. I was trying to ‘look young’ and ended up colliding with another racer and landing on my right side. I went to Valley Medical Center where I was placed into a...

- Ken

// Andrew L. Merritt, M.D.

From Healthgrades.com Over 20 years ago he did carpal tunnel surgery on both my hands; a few years later he ‘rebuilt’ my left thumb. So when I was having very painful right shoulder issues, I contacted Dr. Arntz!! He found I had an...

- A. Sharon

// Craig T. Arntz, M.D.

Anterior approach patient Largo, 67, received hip replacement surgery from POA surgeon Dr. William Barrett. After 5-6 years of knee and back pain, Largo’s hip became a problem. Dr. Barrett had performed orthopedic surgery on her husband and...

- POA Patient Largo

In June 2010, I had surgery on my lower back. Until then, I was in serious and debilitating constant pain and had been for many years. I was on large dosages of pain meds that only took the edge off of the pain I was experiencing. The meds were...

- Lynne

// Jason H. Thompson, M.D.

I came to see Dr. Merritt after a frustrating experience with another surgeon. I was scheduled for a total knee replacement with a surgeon at a different hospital and the surgery got cancelled when I was in the pre-op area. The day of surgery it...

- Valerie

// Andrew L. Merritt, M.D.

The first time I visited Dr. Jason Thompson, he said, “Why did you wait so long?” My back hurt from time to time, some days more than others. But, I didn’t think too much of the pain, because it usually got better. Then it...

- Mariquita

// Jason H. Thompson, M.D.

Proliance Orthopedic Associates and Dr. William Barrett are rare finds in healthcare and surgery.  In my 72 year lifetime, and 50 years as a health care professional, I have a multitude of experiences with doctors, health care systems and...

- B. Noelani Hong

Dr. Fredrick S. Huang
,I can’t tell you enough what a different person Chad is lately. He’s swimming and biking a lot, and slowly adding more activity. He is so much happier when he’s not in pain. I didn’t really understand the daily...

- Angie (Mom of patient)

// Fredrick S. Huang, M.D.

Dear Dr. Merritt: I am 77 years old and had been fighting a steady decline and use of my right knee due to continuing pain for several years. I tried various treatments that were temporary at best. Several of my friends had gone through a similar...

- Clayton and Joann

// Andrew L. Merritt, M.D.