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

Dr. Mark Duncan, MD

Individual provider Family Medicine Physician · NPI 1598713919

Dr. Mark Duncan, MD is a Family Practice in Freeland, Washington. Graduated from West Virginia University School of Medicine in 1995, 31 years ago. Practices with Oak Harbor Primary Care PLLC, a 6-clinician group and accepts Medicare assignment. Licensed in Georgia and Washington.

Years since qualifying
31
Trained at
West Virginia University School of Medicine
Licensed in
GA, WA
In the registry since
2006
Specialties on file
2
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

5577 Vanbarr Pl
Freeland, WA 98249-9555
Phone: (360) 331-3343
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 60305379 (WA)
Family Medicine Physician Taxonomy 207Q00000X · Licence 045063 (GA)

Record details

NPI number1598713919
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 5, 2006
Last updated in NPPESApril 25, 2023
Certification dateApril 25, 2023
Mailing addressPo Box 935, Freeland, WA 98249-0935

Medicare enrollment

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

Medicare specialtyFAMILY PRACTICE
Medical schoolWEST VIRGINIA UNIVERSITY SCHOOL OF MEDICINE
Graduated 1995 (31 years in practice)
Group practice Oak Harbor Primary Care Pllc — 6 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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