Dr. Mark R. Merrell, M.D., is a Board-Certified Orthopaedic Surgeon with over 25 years of clinical expertise. He specializes in Computer-Assisted Surgery and total joint replacements for the hip, knee, and shoulder. A dedicated member of the AAOS, Dr. Merrell provides comprehensive care ranging from fracture management to minimally invasive arthroscopy. He is committed to helping patients regain mobility and function through personalized, evidence-based treatment plans.
Dr. Mark R. Merrell, M.D., is a Board-Certified Orthopaedic Surgeon with over 25 years of clinical expertise. He specializes in Computer-Assisted Surgery and total joint replacements for the hip, knee, and shoulder. A dedicated member of the AAOS, Dr. Merrell provides comprehensive care ranging from fracture management to minimally invasive arthroscopy. He is committed to helping patients regain mobility and function through personalized, evidence-based treatment plans.
The reviews listed below were collected independently of Tri-City Orthopaedics through rater8. Each review represents an authentic and verified patient experience.
Dr. Mer did knee surgery on me and I am able to walk now which I thought I could never do it again. God bless him. He is the best doctor. I know if you need a good knee surgeon look him up. He’s God‘s hands love always his patient.
(2 days ago)
May-2026
the best
(1 week ago)
May-2026
Dr Merrell performed my 2 knee replacements years ago and I have always returned to him with any orthopedic issues. He is thorough and explains the issue well.
(2 weeks ago)
Apr-2026
Old school common sense doc.
(3 weeks ago)
Apr-2026
Mark is an awesome orthopedic doctor and surg. I highly recommend him.
(1 month ago)
Apr-2026
Awesome surgeon
(1 month ago)
Mar-2026
The best of the best
(1 month ago)
Mar-2026
Service as it should be in medical field. We were back before 9 am appointment. X-ray took 2 minutes. We were out in 12 minutes after I saw the doc. 10 stars
(1 month ago)
Mar-2026
Listened to what my concerns where and gave me options on my knee problems
(2 months ago)
Mar-2026
Very happy!! Thank you Dr Merrillò
(2 months ago)
Mar-2026
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Kennewick Orthopaedic Clinic
6703 West Rio Grande Ave Suite B Kennewick, WA 99336
Dr. Mark R. Merrell, M.D., is board-certified in orthopaedic surgery and is a member of the American Academy of Orthopaedic Surgeons. He specializes in surgical and non-surgical treatment of the hip, knee, and shoulder (including joint replacement).
Dr. Merrell grew up working in the potato fields of eastern Idaho but developed an early interest in the medical field. After sustaining several injuries himself, he became interested in how the body works and heals. He wanted to be an orthopaedic surgeon from the time he was 12 years old.
After practicing in the Tri-Cities for over 25 years, one of his greatest satisfactions is seeing his patients' improvement after treatment (whether that be surgical or non-surgical).
Dr. Mer did knee surgery on me and I am able to walk now which I thought I could never do it again. God bless him. He is the best doctor. I know if you need a good knee surgeon look him up. He’s God‘s hands love always his patient.
the best
Dr Merrell performed my 2 knee replacements years ago and I have always returned to him with any orthopedic issues. He is thorough and explains the issue well.
Old school common sense doc.
Mark is an awesome orthopedic doctor and surg. I highly recommend him.
Awesome surgeon
The best of the best
Service as it should be in medical field. We were back before 9 am appointment. X-ray took 2 minutes. We were out in 12 minutes after I saw the doc. 10 stars
Listened to what my concerns where and gave me options on my knee problems
Very happy!! Thank you Dr Merrillò