Quick answers
- Which hospitals does Mary E. Poston work at?
- Medicare's official clinician data lists Mary E. Poston at 2 hospitals: Prisma Health Baptist and Prisma Health Richland Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mary E. Poston see patients?
- Medicare's clinician data lists 2 practice locations, including Columbia, SC. Call before your visit to confirm the address.
- What is Mary E. Poston's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Mary E. Poston accept Medicare assignment?
- Yes. Medicare's clinician data says Mary E. Poston 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 Mary E. Poston?
- (803) 434-6771, as listed in official Medicare / NPI Registry data.
- What is Mary E. Poston's NPI number?
- 1497722367. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mary E. Poston works
Medicare's Facility Affiliation Data lists Mary E. Poston at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Prisma Health BaptistColumbia, SC · Acute Care Hospital · CCN 420086
- Prisma Health Richland HospitalColumbia, SC · Acute Care Hospital · CCN 420018
Practice locations
Addresses where Mary E. Poston is enrolled with Medicare (CMS data updated 2026-10-02).
- 14 Richland Medical Park Dr, Suite 320Columbia, SC 29203 (803) 434‑6771
- 2 Medical Park Rd, Suite 501Columbia, SC 29203 (803) 540‑1000
Group practices
Medicare enrollment lists Mary E. Poston as a member of this group (CMS data updated 2026-10-02).
- Prisma Health Medical Group-Midlands1,068 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Columbia
Clinicians with the same Medicare primary specialty in Columbia, SC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical University Of South Carolina College Of Medicine |
| Graduation year | 1999 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497722367 |
| 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