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 Physician Assistants

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Terrianna Emerson, PA-C

Terrianna Emerson, PA-C, joined Proliance Orthopedic Associates in 2026 and brings a depth of expertise to our team. Terrianna currently works in both our Renton and Covington clinic locations.

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

Book An Appointment
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Gian Kho, PA-C

Gian Kho, PA-C is an orthopedic Physician Assistant working with the sports medicine team, where he is dedicated to helping patients recover from injury and return to active, healthy lifestyles.

To book an appointment with Gian, 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

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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.

January, 2013I am 59 years old and have suffered for years with Oesteoarthritis in my knee due to sports injuries. I tried to prolong the life of the knee with cortisone and viscous shots but finally reached a point where my quality of life had...

- Dinah

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

Dear Dr. Traci Barthel,I’ve never had someone in your position help me like you did. I want to express my appreciation for everything you did to save my finger. When I came to you I was convinced it would have to be amputated. You gave me hope...

- Jennifer

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

Dear Proliance Orthopedic AssociatesI am writing you this letter to tell you about my recent left shoulder replacement surgery done on December 13, 2012. Since this is my second shoulder replacement, having had the right one done four years ago,...

- Raymond

// Craig T. Arntz, 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.

Dear Dr. Cero,It has been a long journey from shattered clavicle to age division National Champion! Thank you & your team at Proliance Orthopedic Associates so much for being my partner in recovery!I appreciated our discussions about the...

- Kerry

I want to tell how much I’ve waited for my hand back. To help people, like you do doctor, it means so much to me to use my hand as a helping hand for others. I’ve prayed for this all year. Doing everything one handed, has been challenging.I...

- Marlene – Patient/Friend

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.