Quick answers
- Where does Aaron Haynes see patients?
- Medicare's clinician data lists 1 practice location in Pierre, SD. Call before your visit to confirm the address.
- What is Aaron Haynes's specialty?
- Medicare lists Hospitalist as the primary specialty.
- Does Aaron Haynes accept Medicare assignment?
- Yes. Medicare's clinician data says Aaron Haynes 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 Aaron Haynes?
- (605) 224-5901, as listed in official Medicare / NPI Registry data.
- What is Aaron Haynes's NPI number?
- 1821271677. 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 Aaron Haynes is enrolled with Medicare (CMS data updated 2026-10-02).
- 801 E Sioux AvePierre, SD 57501 (605) 224‑5901
Group practices
Medicare enrollment lists Aaron Haynes as a member of this group (CMS data updated 2026-10-02).
- Avera St Marys97 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in South Dakota
Clinicians with the same Medicare primary specialty in South Dakota — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Sanford School Of Medicine Of University Of South Dakota |
| Graduation year | 2007 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1821271677 |
| 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