Quick answers
- Which hospitals does Stephen Keiser work at?
- Medicare's official clinician data lists Stephen Keiser at 1 hospital: Prisma Health Greenville Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen Keiser see patients?
- Medicare's clinician data lists 5 practice locations, including Greer, SC, Greenville, SC and Duncan, SC. Call before your visit to confirm the address.
- What is Stephen Keiser's specialty?
- Medicare lists Family Practice as the primary specialty, and also Sports Medicine.
- Does Stephen Keiser accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen Keiser 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 Stephen Keiser?
- (864) 797-7450, as listed in official Medicare / NPI Registry data.
- What is Stephen Keiser's NPI number?
- 1659307007. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen Keiser works
Medicare's Facility Affiliation Data lists Stephen Keiser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Prisma Health Greenville Memorial HospitalGreenville, SC · Acute Care Hospital · CCN 420078
Practice locations
Addresses where Stephen Keiser is enrolled with Medicare (CMS data updated 2026-10-02).
- 109 Physicians DrGreer, SC 29650
- 11 Park Creek DrGreenville, SC 29605 (864) 797‑7450
- 15 Park Creek DrGreenville, SC 29605 (864) 797‑7450
- 210 Freeman Farm RdDuncan, SC 29334 (864) 968‑5123
- 877 W Faris RdGreenville, SC 29605
Group practices
Medicare enrollment lists Stephen Keiser as a member of this group (CMS data updated 2026-10-02).
- Prisma Health University Medical Group2,493 clinicians in the group
Specialties
- Family Practiceprimary
- Sports Medicinealso
Other family doctors in Greer
Clinicians with the same Medicare primary specialty in Greer, SC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Columbia School Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659307007 |
| 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