Benefis Sletten Cancer Institute
Cancer Care • Lewistown, MT • Since 1996 • 2 (Great Falls Sletten Cancer Institute location and Helena Specialty Center) locations
About
Summary: Benefis Health System is a nonprofit, Montana-based health system headquartered in Great Falls. It offers cancer care services via the Sletten Cancer Institute and related facilities, serving central Montana (including Lewistown) with more than 40 medical specialties. The system operates Benefis Hospital (516 beds), Benefis Extended Care Center, Peace Hospice of Montana, Benefis Mercy Flight, Benefis Quick Care, and Benefis Physician Associates. As of recent data, Benefis employs about 668 staff and reports roughly $121.1M in annual revenue, with a broad footprint across Montana and involvement in multiple national and international facilities. Cancer care context for Lewistown: - Sletten Cancer Institute provides comprehensive oncology services within the Benefis network, supporting patients in Lewistown via system-wide specialty access and affiliated providers. - Benefis emphasizes nonprofit, patient-centered cancer care across central Montana, leveraging its regional hospital presence and ambulatory locations to support local oncology needs.
Clinic Type
Cancer Care
Address
1101 26th Street South, Great Falls, MT 59405
Phone
406-731-8200
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Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Technology & Equipment
Team
Insurance & Payment
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Languages Spoken
Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- CMS HCAHPS (via Momentary Labs): 3 out of 5 stars (based on 352 HCAHPS surveys) (352 surveys for overall hospital rating)
- Yelp: 21 reviews (overall rating not explicitly averaged) (21 reviews)
Patients praise
- solid MIPS quality scores across the system
- convenient urgent care availability in Lewistown
- high willingness of patients to recommend the system overall
Common complaints
- billing and collection errors and disputes
- allegations of mistreatment and poor patient communication in specialized clinics
- concerns regarding referral practices and transparency
- long wait times for appointments
"they can not figure out their billing. if you do get good care they are certain to mess something up and later make you pay the bill twice."
— Yelp review of Benefis Health System"They do not care. They do not know their patients. They do not review the records."
— Pain News Network article featuring patient allegations regarding a Benefis pain management clinicSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
In the News
- Lewistown, MT - Benefis Health System — Sep 17, 2025
- Lewistown Locations - Benefis Health System — Sep 26, 2025
- Urgent Care | Montana - Benefis Health System — Sep 30, 2025
- Benefis Lewistown Opens This Week! | Montana — Sep 30, 2025
- Lewistown now served by a mobile PET/CT-scan unit — Feb 20, 2026
Information sourced from the clinic's website as of July 11, 2026.
More cancer care clinics in Lewistown
Central Montana Medical Center in Lewistown, MT opened a comprehensive cancer center offering radiation oncology, medical oncology, and surgical oncology services. The 16,700-square-foot facility includes the region's only medical linear accelerator, CT simulator, infusion chairs, and exam rooms designed with patient and caregiver needs in mind.
Central Montana Medical Center (CMMC) in Lewistown, MT operates as a nonprofit community hospital with about 25 beds, offering comprehensive cancer care alongside full inpatient/outpatient services, including rehab, home health/hospice, obstetrics, emergency, ICU, and high-tech radiology. Headquartered in Lewistown, CMMC emphasizes a mountain-top setting and serves as a regional facility with 3 office locations. Key details: - Type: Nonprofit community hospital - Services: Comprehensive cancer care, pediatric after-hours care, rehab, home health/hospice, surgical services, emergency, ICU, radiology - Size: ~25 beds; ~18 employees - Location: Lewistown, Montana (HQ: 408 Wendell Ave, Lewistown, MT 59457) - Contact: cmmchr@cmmccares.com; 406-535-7711 - NAICS/SIC: 62, 806 - Website: cmmc.health If you’re specifically looking for the Helmsley Cancer Center’s affiliation or programs at Central Montana Medical Center, this page confirms CMMC provides cancer care and is the local hospital serving Lewistown and surrounding communities, but does not detail a separate Helmsley Cancer Center name or branding.
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