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

Dr. William Joseph Harper, MD

Individual provider Surgery Physician · NPI 1366574006

Dr. William Joseph Harper, MD is a Surgery Physician in Helena, Montana. Practices as a sole proprietor. Licensed in Montana.

Licensed in
MT
In the registry since
2007
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

400 Saddle Dr
Helena, MT 59601-5631
Phone: (406) 442-0099
Fax: (406) 442-0208
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 6273 (MT)
Vascular Surgery Physician Taxonomy 2086S0129X · Licence 6273 (MT)

Record details

NPI number1366574006
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 9, 2007
Last updated in NPPESJanuary 10, 2008

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