Quick answers
- Which hospitals does Mark A. Stewart work at?
- Medicare's official clinician data lists Mark A. Stewart at 3 hospitals: Prisma Health Greenville Memorial Hospital, Prisma Health Greer Memorial Hospital and Prisma Health Patewood Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark A. Stewart see patients?
- Medicare's clinician data lists 1 practice location in Greer, SC. Call before your visit to confirm the address.
- What is Mark A. Stewart's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does Mark A. Stewart accept Medicare assignment?
- Yes. Medicare's clinician data says Mark A. Stewart 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.
- Does Mark A. Stewart offer telehealth?
- Medicare's clinician data says Mark A. Stewart offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mark A. Stewart?
- (864) 877-9066, as listed in official Medicare / NPI Registry data.
- What is Mark A. Stewart's NPI number?
- 1770233710. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark A. Stewart works
Medicare's Facility Affiliation Data lists Mark A. Stewart 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
- Prisma Health Greer Memorial HospitalGreer, SC · Acute Care Hospital · CCN 420033
- Prisma Health Patewood HospitalGreenville, SC · Acute Care Hospital · CCN 420102
Practice locations
Addresses where Mark A. Stewart is enrolled with Medicare (CMS data updated 2026-10-02).
- 426 Memorial Dr ExtGreer, SC 29651 (864) 877‑9066
Group practices
Medicare enrollment lists Mark A. Stewart 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
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 South Carolina School Of Medicine |
| Graduation year | 2022 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1770233710 |
| 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