Quick answers
- Which hospitals does Benjamin D. Willen work at?
- Medicare's official clinician data lists Benjamin D. Willen at 5 hospitals: Banner North Colorado Medical Center, Centura Health-St Anthony North Health Campus, Longmont United Hospital, Sterling Regional Medcenter and UCHealth Greeley Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Benjamin D. Willen see patients?
- Medicare's clinician data lists 2 practice locations, including Midland, MI and Sterling, CO. Call before your visit to confirm the address.
- What is Benjamin D. Willen's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Benjamin D. Willen accept Medicare assignment?
- Yes. Medicare's clinician data says Benjamin D. Willen accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Benjamin D. Willen?
- (989) 633-8018, as listed in official Medicare / NPI Registry data.
- What is Benjamin D. Willen's NPI number?
- 1437643905. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Benjamin D. Willen works
Medicare's Facility Affiliation Data lists Benjamin D. Willen at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner North Colorado Medical CenterGreeley, CO · Acute Care Hospital · CCN 060001
- Centura Health-St Anthony North Health CampusWestminster, CO · Acute Care Hospital · CCN 060104
- Longmont United HospitalLongmont, CO · Acute Care Hospital · CCN 060003
- Sterling Regional MedcenterSterling, CO · Acute Care Hospital · CCN 060076
- UCHealth Greeley HospitalGreeley, CO · Acute Care Hospital · CCN 060131
Practice locations
Addresses where Benjamin D. Willen is enrolled with Medicare (CMS data updated 2026-10-02).
- 4000 Wellness DrMidland, MI 48670 (989) 633‑8018
- 615 Fairhurst StSterling, CO 80751 (970) 526‑5555
Group practices
Medicare enrollment lists Benjamin D. Willen as a member of these groups (CMS data updated 2026-10-02).
- MyMichigan Medical Center Midland507 clinicians in the group
- Banner Hospital Based Physicians Colorado LLC75 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Midland
Clinicians with the same Medicare primary specialty in Midland, MI — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1437643905 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians