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(425) 823-4000
Samuel S Koo MD, MPHSeattle’s Shoulder Specialist

Expert shoulder careby Dr. Samuel Koo

Dr. Koo is a board-certified surgeon specializing in minimally invasive arthroscopic shoulder surgery for patients throughout Seattle, Kirkland, Redmond, Bellevue, and the surrounding areas.

  • 375+shoulder surgeries a year
  • Board-certifiedorthopedic surgeon
  • Top DoctorSeattle Met & Seattle Magazine
Dr. Samuel Koo smiling in a white coat

Shoulder Conditions We Treat

Care for all types of shoulder pain, from simple to complex.

View all conditions

A Message from Dr. Koo

“I believe all surgeons must have two essential qualities: integrity and empathy. To me, integrity means treating each patient as if I were caring for my wife or children.”

“I am an expert in arthroscopic (minimally invasive) shoulder surgery, but I will not recommend surgery unless all non-operative solutions have been explored and exhausted.”

“By working together we can optimize the patient experience and maximize your health and well-being.”

Read Dr. Koo’s Story

Shoulder Surgery Education Videos

Watch our informational videos about some of the common shoulder procedures performed at our office in Seattle.

View All Videos

What Our Patients Are Saying

337 Reviews · Average Rating: 4.8

Read all testimonials
  • 5 out of 5 stars
    Great "bedside manner" even in the office. ;-)
    Google review · Sep 14, 2026
  • 5 out of 5 stars
    Wonderful surgeon - total reverse shoulder replacement in April - answered all my questions
    Patient review · Aug 27, 2026
  • 5 out of 5 stars
    Dr Koo was patiently answered all of our questions. Our concerns were well addressed.
    Google review · Jun 12, 2026
  • 5 out of 5 stars
    Always great!😊
    Google review · Apr 15, 2026
  • 5 out of 5 stars
    Dr. Koo repaired left and right shoulders after years of abuse. range of motion 100%. My aftercare was followed to the T and my reward was full use. There is nobody better.
    Google review · Mar 19, 2026
  • 5 out of 5 stars
    Dr. Samuel Koo performed surgery on my right shoulder, and I couldn’t be happier with the care I received. He was professional, patient, and explained everything clearly. The surgery went smoothly, and my recovery has been excellent. Dr. Koo is a skilled surgeon who truly cares about his patients. I highly recommend him.
    Google review · Mar 13, 2026
  • 5 out of 5 stars
    Extremely happy with appointment. Dr Koo is super professional.
    Google review · Sep 14, 2026
  • 5 out of 5 stars
    Brief visit. Thoroughly explained my condition and addressed my questions well.
    Patient review · Aug 27, 2026
  • 5 out of 5 stars
    Great experience.
    Google review · May 21, 2026
  • 5 out of 5 stars
    He listens, explains, and provides options
    Google review · Mar 26, 2026
  • 5 out of 5 stars
    Very easy to talk too
    Google review · Mar 17, 2026
  • 5 out of 5 stars
    All questions and concerns answered satisfactorily.
    Google review · Mar 12, 2026
  • 5 out of 5 stars
    My visit was fast, professional, and very helpful.
    Patient review · Aug 27, 2026
  • 5 out of 5 stars
    Professional and attentive visit
    Google review · Aug 11, 2026
  • 5 out of 5 stars
    Followup visit. Dr. Koo did an excellent job replacing my shoulder. 1 year later shoulder very strong and stable. I'm very pleased
    Google review · Apr 24, 2026
  • 5 out of 5 stars
    Dr Koo is very and polite. Nice to see someone who wants to get on the issue right away instead of messing around. The wait time was very short and quick..
    Google review · Mar 22, 2026
  • 5 out of 5 stars
    Answered all my questions , very helpful and easy to talk with
    Google review · Mar 13, 2026
  • 5 out of 5 stars
    Very good doctor and als very nice!
    Google review · Feb 13, 2026

Information for Out-of-Town Patients

Many of Dr. Koo’s patients come from outside of the Seattle area.

Our practice is well-equipped to receive new patients. We welcome out-of-town patients from all over the United States, Canada, and many other foreign countries. We assist our patients in finding feasible financial solutions, and we work with most major insurance plans. Patients who pay in cash will also receive a special discount. We accept out-of-network patients, but they may have an additional cost.

Many of our out-of-town patients contact us in advance to see if we are a good fit for their needs, and we highly recommend doing so. To start this process, please give us a call at (425) 823-4000 or request an appointment online.

Request an Appointment