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.

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.
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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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Today marks my one week post op anniversary for my left hip surgery! I am amazed my pain is gone only tenderness in incision site.  I’m an old 70 year retired R.N. and recognize an outstanding medical office-which I found at your office from...

- Sallee

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.

To Dr. Merritt,On a Saturday in April of 2014, I had climbed a step ladder to reach a bowl from a cupboard. Somehow, I forgot that I was on a ladder, and fell. I couldn’t get off the floor and had to call for help. I had fractured my hip.That...

- Nicole

// Andrew L. Merritt, M.D.

My surgery was on May 26, 2015 (my birthday).  I was very aggressive with my rehab and was able to ski that first winter (6 months from surgery) and was already back to hiking.  Today, I do an early morning hike up Pinnacle Peak just outside of...

- Pat

I first injured my shoulder when I was lifting an electric motor. I felt a pop and immediate pain. The pain was so limiting, I knew I really injured my shoulder. At my first visit with Dr. Merritt, I was very impressed. He really listened to me...

- Mark

// Andrew L. Merritt, 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.

I started having problems with my back eight years ago; the pain would come and go and became increasingly worse. I like to take trips and my back pain was slowing me down which was making me angry. I had gone to chiropractors, massage...

- Vickie A.

// Jason H. Thompson, M.D.

This past summer I met with Proliance Orthopedic Associates for help with my continuing back pain from degenerating discs and arthritis in my spine generating years ago in my college days in the 60s.  I met with Dr. Jason Thompson at Proliance...

- Janet

// Jason H. Thompson, M.D.

I broke my wrist while snowboarding, which is how I met Dr. Howlett. I came into the office for a consultation after I had my cast taken off, and Dr. Howlett recommended surgery. Since surgery was the recommendation, I reluctantly agreed. I was...

- Roy W.

// John Howlett, M.D.

I was lucky to have had a wonderful experience today spending it in the VOA Surgery Center. From the time upon admitting, to surgery, recovery, and discharge the staff was so caring, kind, and compassionate about the patient, and the procedure to...

- Rebecca