Quick answers
- Where does Arnold G. Siefken see patients?
- Medicare's clinician data lists 1 practice location in Jamestown, ND. Call before your visit to confirm the address.
- What is Arnold G. Siefken's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Arnold G. Siefken accept Medicare assignment?
- Medicare's clinician data says Arnold G. Siefken may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Arnold G. Siefken?
- (701) 252-0569, as listed in official Medicare / NPI Registry data.
- What is Arnold G. Siefken's NPI number?
- 1699861195. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Arnold G. Siefken is enrolled with Medicare (CMS data updated 2026-10-02).
- 701 1st Ave SJamestown, ND 58401 (701) 252‑0569
Specialties
- Chiropracticprimary
Other chiropractors in Jamestown
Clinicians with the same Medicare primary specialty in Jamestown, ND — not a recommendation.
Clinician information
| Credential | DC |
|---|---|
| Medical school | Northwestern College Of Chiropractic |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1699861195 |
| 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
- 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