Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Gregory P Duff, MD

Individual provider Orthopaedic Surgery Physician · NPI 1952374290

Gregory P Duff, MD is an Orthopedic Surgery in Silverdale, Washington. Graduated from Harvard Medical School in 1992, 34 years ago. Practices with Franciscan Medical Group, a 1,417-clinician group and accepts Medicare assignment. Licensed in Washington.

Years since qualifying
34
Trained at
Harvard Medical School
Licensed in
WA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

4409 NW Anderson Hill Rd
Silverdale, WA 98383-6807
Phone: (360) 698-6630
Fax: (360) 825-6536
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Orthopaedic Surgery Physician (primary) Taxonomy 207X00000X · Licence MD00034439 (WA)

Record details

NPI number1952374290
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 8, 2006
Last updated in NPPESDecember 2, 2020
Certification dateDecember 2, 2020
Mailing address4409 Nw Anderson Hill Rd, Silverdale, WA 98383-6807

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyORTHOPEDIC SURGERY
Also practisesSPORTS MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 1992 (34 years in practice)
Group practice Franciscan Medical Group — 1417 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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