Quick answers
- Which hospitals does William A. Messer work at?
- Medicare's official clinician data lists William A. Messer at 5 hospitals: Prisma Health Baptist Easley Hospital, Prisma Health Greenville Memorial Hospital, Prisma Health Greer Memorial Hospital, Prisma Health Patewood Hospital and St Francis-Downtown. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William A. Messer see patients?
- Medicare's clinician data lists 1 practice location in Greenville, SC. Call before your visit to confirm the address.
- What is William A. Messer's specialty?
- Medicare lists Family Practice as the primary specialty.
- Does William A. Messer accept Medicare assignment?
- Medicare's clinician data says William A. Messer may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for William A. Messer?
- (864) 315-1300, as listed in official Medicare / NPI Registry data.
- What is William A. Messer's NPI number?
- 1700814985. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William A. Messer works
Medicare's Facility Affiliation Data lists William A. Messer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Prisma Health Baptist Easley HospitalEasley, SC · Acute Care Hospital · CCN 420015
- 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
- St Francis-DowntownGreenville, SC · Acute Care Hospital · CCN 420023
Practice locations
Addresses where William A. Messer is enrolled with Medicare (CMS data updated 2026-10-02).
- 124 Verdae Blvd, Suite 204Greenville, SC 29607 (864) 315‑1300
Group practices
Medicare enrollment lists William A. Messer as a member of this group (CMS data updated 2026-10-02).
- Partnermd South Carolina PC3 clinicians in the group
Specialties
- Family Practiceprimary
Other family doctors in Greenville
Clinicians with the same Medicare primary specialty in Greenville, SC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Carolina School Of Medicine |
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1700814985 |
| 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