Quick answers
- Which hospitals does Marshall Diven work at?
- Medicare's official clinician data lists Marshall Diven at 3 hospitals: Billings Clinic Hospital, Johnson County Healthcare Center and Sheridan Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marshall Diven see patients?
- Medicare's clinician data lists 3 practice locations, including Sheridan, WY, Cody, WY and Billings, MT. Call before your visit to confirm the address.
- What is Marshall Diven's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Marshall Diven accept Medicare assignment?
- Yes. Medicare's clinician data says Marshall Diven 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.
- Does Marshall Diven offer telehealth?
- Medicare's clinician data says Marshall Diven offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Marshall Diven?
- (307) 672-1000, as listed in official Medicare / NPI Registry data.
- What is Marshall Diven's NPI number?
- 1649809351. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marshall Diven works
Medicare's Facility Affiliation Data lists Marshall Diven at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Billings Clinic HospitalBillings, MT · Acute Care Hospital · CCN 270004
- Johnson County Healthcare CenterBuffalo, WY · Critical Access Hospital · CCN 531308
- Sheridan Memorial HospitalSheridan, WY · Acute Care Hospital · CCN 530006
Practice locations
Addresses where Marshall Diven is enrolled with Medicare (CMS data updated 2026-10-02).
- 1401 W 5th StSheridan, WY 82801 (307) 672‑1000
- 201 Yellowstone AveCody, WY 82414 (307) 527‑7561
- 801 N 29th StBillings, MT 59101 (406) 238‑2500
Group practices
Medicare enrollment lists Marshall Diven as a member of these groups (CMS data updated 2026-10-02).
- Billings Clinic Specialty Supplies and Services, LLC824 clinicians in the group
- Memorial Hospital of Sheridan County91 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Wyoming
Clinicians with the same Medicare primary specialty in Wyoming — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Carolina School Of Medicine, Greenville |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1649809351 |
| 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