Big Sky Oncology
NPI 1083793244 · Hematology & Oncology Physician · Great Falls, MT
Big Sky Oncology is a Hematology & Oncology Physician organization in Great Falls, MT (NPI 1083793244).
Provider details
- NPI number
- 1083793244
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Grant Harrer, Preisdent(406) 731-8100
- License
- 5278 (MT)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-06
- Last updated
- 2020-08-22
Frequently asked questions
- What is Big Sky Oncology's NPI number?
- Big Sky Oncology's National Provider Identifier (NPI) is 1083793244, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Big Sky Oncology?
- Big Sky Oncology is classified in the NPPES registry as Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Big Sky Oncology located?
- Big Sky Oncology's practice location on file with NPPES is 1117 29th St S, Great Falls, MT 59405-5306.
- What is Big Sky Oncology's phone number?
- The practice phone number listed in the NPPES registry for Big Sky Oncology is (406) 731-8100.
- Who is the authorized official for Big Sky Oncology?
- The authorized official listed on Big Sky Oncology's NPPES record is Grant Harrer, Preisdent. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Big Sky Oncology's NPI active?
- Yes — Big Sky Oncology's NPI (1083793244) is active in the NPPES registry as of the last update on 2020-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.