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!

Surgeons in blue scrubs and masks collaborate in an operating room during surgery.


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

Smiling woman with long dark hair wearing a black blouse against a blue background.

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
Smiling man in a black pinstripe suit, white shirt, and blue tie against a solid blue background.

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

View more

Full right hip replacement by Dr. Barrett 12-19-16.  PAIN-FREE hike up Diamondhead on 7-15-17.  Thank you Proliance Team!!!!

- Brian C.

I was told by 2 surgeons that I needed both knees replaced but I’d better get them done together as it’s so painful that I’d never come back to get the second one done. I was also told that my activities would be very limited as...

- Monica F.

I have now had 2 surgeries at Proliance and Valley Medical and they were both top notch. First was hip replacement with Dr. Barrett a few years ago. There’s a very good reason he has been on the “Top Doctor” list for so many...

- Sue W.

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

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.

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.

POA patient Betty, 89, recently received hip replacement surgery from Dr. Merritt. She details the discomfort that led to her decision to schedule orthopedic surgery and her experience at Proliance Orthopedic Associates. Her peers call her “the...

- POA Patient Betty

// Andrew L. Merritt, M.D.

I had bilateral knee replacements with Dr. Huang years ago and it went great!  So when I broke my knee recently, I went straight back to Dr. Huang at Proliance Orthopedic Associates.  Dr. Huang informed me that I would need a revision surgery...

- Paul

// Timothy B. Alton, M.D.

At 83 years old, I was very frightened at the thought of needing surgery on my hip.  I haven’t had surgery since I was 6 years old, and it was not something that I wanted to go through at the age of 83.  I had been limping for over a year,...

- Joanne

// Andrew L. Merritt, M.D.

Dear Dr. Huang,There is nothing more precious to me than being able to go and do things with family and not have to sit every 15 minutes because my knees hurt. I walked a whole fair and never once had to sit down! I can now stand in one place for...

- Mary

// Fredrick S. Huang, M.D.