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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Learn more about Dr. Gregory Koski:

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Specialties & Research

  • He has special expertise in 3 areas:
  • Hip Osteoarthritis
  • Knee Osteoarthritis
  • Osteoarthritis (Hand and Wrist)

Education & Awards

Dr. Koski graduated from University of Minnesota, Twin Cities, Minneapolis.


Dr. Koski has 3 hospital affiliations:

  • Providence St Vincent Medical Center 
  • Kaiser Sunnyside Medical Center 
  • Interstate Med Office South 


  • French
  • German

> > > > Dr. Gregory Koski, MD

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Additional Information
Dr. Gregory Joel Koski MD is a male Orthopaedic Surgeon, has 33 years of experience and practices in Orthopaedic Surgery.
Where does Dr. Gregory J. Koski practice?
Dr. Gregory Koski has 2 office locations.
Dr. Gregory Koski practices Orthopaedic Surgery near Portland, OR.
Additional practice locations include: Clackamas, OR.
See Portland Surgeons.