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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Check out this wonderful testimonial video from a Proliance Orthopedic Associates patient! Cathy C. shares her POA experience through kind words about her knee replacement surgery and POA orthopedic surgeon, Dr. William Barrett. Cathy, as a part...

- Cathy

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’ve seen Dr. Howlett multiple times for problems with my hands. Dr. Howlett has the most calming personality that really inspires confidence as a patient.  He’s great at calming my fears and what I appreciate the most is that he really...

- Sandra W.

// John Howlett, M.D.

I had been having trouble with my right shoulder for a couple of years and tried non-surgical alternatives. When I slipped on my deck and landed hard on my right shoulder I ended up in VMC emergency, where the doctor referred me to Dr. Huang. Dr....

- Dexter

// Fredrick S. Huang, M.D.

“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

Dear Dr. Howlett,I have had many surgeries, but I have seldom had the care that you took to explain the process I would go through. After the surgery, when I saw the X-rays, and the incision, I could tell that you had done an excellent job. More...

- Dawn

// John Howlett, M.D.

The surgeries I received in 2016 were a major rotator cuff 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...

- Jay S.

// Craig T. Arntz, M.D.

I came to see Dr. Shrivastava at Proliance Orthopedic Associates because I broke my wrist.  It was the first time that I had broken anything.  From my first visit here with Zach PA-C, till my last, everyone made me feel comfortable and at...

- Betty

// Niket Shrivastava, M.D.

I came to see Dr. Shrivastava at Proliance Orthopedic Associates because I was having shoulder pain which caused problems whenever I used my arm.  Since being treated by Dr. Shrivastava, my shoulder pain is gone which is making my life so much...

- Patricia

// Niket Shrivastava, M.D.

To: Valley Orthopedic Associates Care of: Dr. Cero, Joint replacement is a serious decision in one’s life. But when you consider the pain of bone on bone and the quality of life you give up every day you put this decision off you will never...

- Pat