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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The surgeries I received in 2016 were a major shoulder surgery from Dr. Arntz in April and a total knee replacement in June by Dr. Merritt. I was referred by Dr. David Sweiger who took the time and interest to try to help me. So glad I switched...

- Jay S.

// 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 am writing this letter to thank Proliance Orthopedic Associates and Dr. Susan Cero for making my joint replacement surgery a complete success. The surgery was performed on May 18, 2015. The outcome is much better than expected. The joint...

- Jana T.

“My husband was going to have both knees replaced at the same time, pretty scary stuff. We live in Anchorage, but had a friend recommend Dr. William Barrett. We contacted his office and had xrays, etc. sent down to Seattle through our...

- Penny

All of the staff that I encountered were very helpful.  Never did I feel rushed and whenever I had a question, it was thoroughly answered.  For having surgery, Proliance Orthopedic Associates made it feel the best possible.  Dr. Shrivastava...

- Ted

// Niket Shrivastava, M.D.

I was living in constant pain, 24 hours a day for years! Before I met Dr. Merritt I was always limping and was limited on the activities that I could do with my young daughter, especially after a full day of work. I had seen other doctors who...

- Abeslin C.

// Andrew L. Merritt, M.D.

I had a total right hip replacement on the 10th of August. From my first appointment with Jana Flener, to being discharged from Valley Medical I was TOTALLY impressed and happy with everything. Proliance Orthopedics is just super. They treated me...

- Mary M.

I recently dislocated my shoulder twice playing hockey and decided it was time to fix the problem before it got any worse. I had an unreal experience at Proliance Orthopedic Associates, all real nice people. Everyone helped me with getting ready...

- Tyler C.

// Craig T. Arntz, M.D.

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.

I’ve been told I have an “old back” and it leaves me with a very gimpy left leg. But before I resort to the inevitable surgery, I have had two epidural steroid injections done by Dr. Chilczuk. My first injection was harder,...

- Lori