Quick answers
- Where does Isaac G. Johnson see patients?
- Medicare's clinician data lists 1 practice location in Watertown, SD. Call before your visit to confirm the address.
- What is Isaac G. Johnson's specialty?
- Medicare lists Chiropractic as the primary specialty.
- Does Isaac G. Johnson accept Medicare assignment?
- Yes. Medicare's clinician data says Isaac G. Johnson 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 Isaac G. Johnson?
- (605) 882-0100, as listed in official Medicare / NPI Registry data.
- What is Isaac G. Johnson's NPI number?
- 1477104248. 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 Isaac G. Johnson is enrolled with Medicare (CMS data updated 2026-10-02).
- 1101 Jenson Ave SEWatertown, SD 57201 (605) 882‑0100
Group practices
Medicare enrollment lists Isaac G. Johnson as a member of this group (CMS data updated 2026-10-02).
- Alternative Health Centers PC2 clinicians in the group
Specialties
- Chiropracticprimary
Other chiropractors in Watertown
Clinicians with the same Medicare primary specialty in Watertown, SD — not a recommendation.
Clinician information
| Credential | CH |
|---|---|
| Medical school | Northwestern College Of Chiropractic |
| Graduation year | 2019 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477104248 |
| 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