Quick answers
- Which hospitals does Eric S. Eastmo work at?
- Medicare's official clinician data lists Eric S. Eastmo at 5 hospitals: Monument Health Custer Hospital, Monument Health Lead-Deadwood Hospital, Monument Health Rapid City Hospital, Monument Health Spearfish Hospital and Monument Health Sturgis Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Eric S. Eastmo see patients?
- Medicare's clinician data lists 1 practice location in Rapid City, SD. Call before your visit to confirm the address.
- What is Eric S. Eastmo's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Eric S. Eastmo accept Medicare assignment?
- Yes. Medicare's clinician data says Eric S. Eastmo 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 Eric S. Eastmo offer telehealth?
- Medicare's clinician data says Eric S. Eastmo offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Eric S. Eastmo?
- (605) 755-8109, as listed in official Medicare / NPI Registry data.
- What is Eric S. Eastmo's NPI number?
- 1437144102. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Eric S. Eastmo works
Medicare's Facility Affiliation Data lists Eric S. Eastmo at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Monument Health Custer HospitalCuster, SD · Critical Access Hospital · CCN 431323
- Monument Health Lead-Deadwood HospitalDeadwood, SD · Critical Access Hospital · CCN 431320
- Monument Health Rapid City HospitalRapid City, SD · Acute Care Hospital · CCN 430077
- Monument Health Spearfish HospitalSpearfish, SD · Acute Care Hospital · CCN 430048
- Monument Health Sturgis HospitalSturgis, SD · Critical Access Hospital · CCN 431321
Practice locations
Addresses where Eric S. Eastmo is enrolled with Medicare (CMS data updated 2026-10-02).
- 353 Fairmont BlvdRapid City, SD 57701 (605) 755‑8109
Group practices
Medicare enrollment lists Eric S. Eastmo as a member of these groups (CMS data updated 2026-10-02).
- Monument Health Rapid City Hospital Inc564 clinicians in the group
- Dakota West Radiation Oncology PC3 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in South Dakota
Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1437144102 |
| 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