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

William Kowallis

Individual provider Internal Medicine Physician · NPI 1053112227

William Kowallis is an Internal Medicine Physician in Boise, Idaho. Licensed in Idaho. Registered with an NPI since 2025.

Licensed in
ID
In the registry since
2025

Practice location Address checks out

500 W Fort St # 111R
Boise, ID 83702-4599
Phone: (208) 422-1000
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 3071460 (ID)

Record details

NPI number1053112227
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedMarch 22, 2025
Last updated in NPPESJune 1, 2025
Certification dateJune 1, 2025

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