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

William R Knaack, MD

Individual provider Internal Medicine Physician · NPI 1982666517

William R Knaack, MD is an Internal Medicine Physician in Durham, North Carolina. Licensed in North Carolina. Registered with an NPI since 2006.

Licensed in
NC
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

508 Fulton St
Durham, NC 27705-3875
Phone: (919) 286-0411
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X (NC)

Record details

NPI number1982666517
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 6, 2006
Last updated in NPPESJuly 13, 2026

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