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

Big Sky Internal Medicine

Organization Internal Medicine Physician · NPI 1023100732

Big Sky Internal Medicine is an Internal Medicine Physician in Lewistown, Montana. Registered with an NPI since 2006.

In the registry since
2006

Practice location Address checks out

310 Wendell Ave Ste 101
Lewistown, MT 59457-2267
Phone: (406) 535-1490
Fax: (406) 535-1491
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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

Record details

NPI number1023100732
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Janet Grensten — Office Manager · (406) 535-1490
NPI enumeratedSeptember 29, 2006
Last updated in NPPESOctober 20, 2009
Mailing address310 Wendell Ave Ste 101, Lewistown, MT 59457-2267

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