Quick answers
- Which hospitals does Frank Reiser work at?
- Medicare's official clinician data lists Frank Reiser at 5 hospitals: CHI St Alexius Health Dickinson, CHI St Alexius Health Williston, McKenzie County Healthcare Systems Inc, Prairie Lakes Healthcare System, Inc and Prowers Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Frank Reiser see patients?
- Medicare's clinician data lists 1 practice location in Watertown, SD. Call before your visit to confirm the address.
- What is Frank Reiser's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Frank Reiser accept Medicare assignment?
- Yes. Medicare's clinician data says Frank Reiser 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 Frank Reiser?
- (605) 882-7000, as listed in official Medicare / NPI Registry data.
- What is Frank Reiser's NPI number?
- 1750381257. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Frank Reiser works
Medicare's Facility Affiliation Data lists Frank Reiser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- CHI St Alexius Health DickinsonDickinson, ND · Critical Access Hospital · CCN 351336
- CHI St Alexius Health WillistonWilliston, ND · Critical Access Hospital · CCN 351334
- McKenzie County Healthcare Systems IncWatford City, ND · Critical Access Hospital · CCN 351302
- Prairie Lakes Healthcare System, IncWatertown, SD · Acute Care Hospital · CCN 430005
- Prowers Medical CenterLamar, CO · Critical Access Hospital · CCN 061323
Practice locations
Addresses where Frank Reiser is enrolled with Medicare (CMS data updated 2026-10-02).
- 401 9th Ave NWWatertown, SD 57201 (605) 882‑7000
Group practices
Medicare enrollment lists Frank Reiser as a member of this group (CMS data updated 2026-10-02).
- Prairie Lakes Health Care System Inc109 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Watertown
Clinicians with the same Medicare primary specialty in Watertown, SD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arizona College Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750381257 |
| 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