Helmsley Cancer Center
Cancer Care • Lewistown, MT
About
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.
Clinic Type
Cancer Care
Address
408 Wendell Avenue Lewistown, Montana 59457
Phone
406-535-6373
cmmchr@cmmccares.com
Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Insurance & Payment
—
Languages Spoken
—
FAQs
What services does the Helmsley Cancer Center provide?
The Helmsley Cancer Center offers a wide range of oncology services including advanced diagnostic services and treatments such as chemotherapy, radiation therapy, and immunotherapy.
Social Media
Photos








In the News
- How a Notorious Billionaire’s Foundation Is Saving Lives in Rural America – Chronicle of Philanthropy — Dec 8, 2025
- New mobile PET/CT scan at CMMC | Physics | lewistownnews.com — Feb 2, 2026
- How notorious billionaire Leona Helmsley’s foundation is saving lives in rural America — Mar 24, 2026
- Cancer Colors donates record amount | News | lewistownnews.com — Sep 4, 2025
- How notorious billionaire Leona Helmsley’s foundation is saving lives in rural America — Mar 24, 2026
Information sourced from the clinic's website as of July 11, 2026.
More cancer care clinics in Lewistown
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.
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.
Your clinic’s marketing team, powered by AI.On-brand ads, SEO, and social campaigns in one place.Generate your first clinic ad for free
Get more revenue from the patients you already have.Voice and SMS that follow up until lapsed patients are back on the schedule.Book a Clincy call
Your practice’s fractional recruiting team.Dental-only search, run end to end, with placements guaranteed for a year.Find your next hire Comparing your options?
See other cancer care clinics in Lewistown, or search the full directory by insurance, ratings, and more.