Quick answers
- Which hospitals does Dennis A. Buck work at?
- Medicare's official clinician data lists Dennis A. Buck at 5 hospitals: Centracare- Rice Memorial Hospital, Chippewa County Hospital, Madison Hospital, Meeker Memorial Hospital and Summit Healthcare Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dennis A. Buck see patients?
- Medicare's clinician data lists 3 practice locations, including Show Low, AZ, Willmar, MN and Montevideo, MN. Call before your visit to confirm the address.
- What is Dennis A. Buck's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Dennis A. Buck accept Medicare assignment?
- Medicare's clinician data says Dennis A. Buck may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- Does Dennis A. Buck offer telehealth?
- Medicare's clinician data says Dennis A. Buck offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Dennis A. Buck?
- (928) 537-6937, as listed in official Medicare / NPI Registry data.
- What is Dennis A. Buck's NPI number?
- 1114157195. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dennis A. Buck works
Medicare's Facility Affiliation Data lists Dennis A. Buck at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Centracare- Rice Memorial HospitalWillmar, MN · Acute Care Hospital · CCN 240088
- Chippewa County HospitalMontevideo, MN · Critical Access Hospital · CCN 241325
- Madison HospitalMadison, MN · Critical Access Hospital · CCN 241372
- Meeker Memorial HospitalLitchfield, MN · Critical Access Hospital · CCN 241366
- Summit Healthcare Regional Medical CenterShow Low, AZ · Acute Care Hospital · CCN 030062
Practice locations
Addresses where Dennis A. Buck is enrolled with Medicare (CMS data updated 2026-10-02).
- 2500 E Hunt Dr, Suite HShow Low, AZ 85901 (928) 537‑6937
- 301 Becker Ave SWWillmar, MN 56201 (320) 235‑4543
- 824 N 11th StMontevideo, MN 56265 (320) 269‑8877
Group practices
Medicare enrollment lists Dennis A. Buck as a member of these groups (CMS data updated 2026-10-02).
- Summit Healthcare Association77 clinicians in the group
- CCM Health69 clinicians in the group
- Carris Health LLC38 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Touro Un College Of Osteopathic Medicine, Vallejo |
| Graduation year | 2009 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1114157195 |
| 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