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!

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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

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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
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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.

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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.
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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

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I’m a 57-year-old guy who has worked desk jobs for the past 30+ years. I’ve been active my whole life. I enjoy playing various sports such as baseball, basketball and soccer, and outdoor activities such as long distance running, skiing and...

- Tom

// Andrew L. Merritt, M.D.

The Comeback KidI climbed Mt Adams on Friday, July 19, 2013.This was a big event for me for 2 reasons. I am the “comeback kid” as I have had bilateral knee replacements and two rotator cuff surgeries in the last 3 years. At 62, I...

- Don

Not long ago, I had an accident where I was knocked unconscious, and when I came to, I could see the bones in my arm/elbow area. This is when I met Dr. Howlett at Proliance Orthopedic Associates. Dr. Howlett had great bedside manner from the...

- Ken

// John Howlett, M.D.

I’m just another success story on Dr. Barrett’s file. Almost four months out I’m happy to have my new knee. Although rehab is still in progress, I can barely catch up with the knee as it walks all by itself – no pain....

- Oleg G.

I take this time to share with you feedback about my experience with Proliance Orthopedics. Over the course of time, I worked with doctors and physician assistants at Proliance to address problems associated with my hip and back. Dr. Chilczuk,...

- Joy K.

// Andrew L. Merritt, M.D.

Before I came to Proliance Orthopedic Associates I was VERY discouraged.  I was in pain every day for months, but being told nothing was wrong.  The day I met Dr. Shrivastava and Jeannie, my world brightened.  They assured me that I would get...

- Kimberly

// Niket Shrivastava, M.D.

I had degenerative disc in my right hip and suffered for four to five years in pain with the last two or three years being unbearable. I couldn’t tie my shoes, sitting in the car was difficult, and I could no longer participate in yoga classes...

- John

// Andrew L. Merritt, M.D.

Joel discusses his wife’s chronic pain, hip surgery and road to recovery with Dr. Merritt.

- Joel

// Andrew L. Merritt, M.D.

I was referred by someone whose coworker had surgery by a different surgeon from Proliance Orthopedic Associates. When I was ready to schedule my appointment, that particular surgeon’s schedule was full, so I saw Dr. Merritt instead.Based on my...

- Lynn

// Andrew L. Merritt, M.D.

I began my career as a mountain guide taking people to the summit of Mt Rainier in 1968 at age 17. Many years and hundreds of summit ascents later, my knees were shot. I consulted with Dr. Barrett and subsequently decided to go with...

- Joe H.