Joseph Williamson, PA-C
NPI 1326849407 · Physician Assistant · Greer, SC
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Williamson, PA-C is a Physician Assistant provider in Greer, SC (NPI 1326849407).
Provider details
- NPI number
- 1326849407
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Physician Assistant363A00000X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (2)
- 102 Rockcreek BlvdGreenwood, SC 29649-8915Phone: (864) 725-5020
- 22580 Highway 76 E Ste 300Laurens, SC 29360-8460Phone: (864) 939-1070
Registry dates
- Enumerated
- 2025-03-24
- Last updated
- 2025-06-10
- Certified
- 2025-06-10
Frequently asked questions
- What is Joseph Williamson's NPI number?
- Joseph Williamson's National Provider Identifier (NPI) is 1326849407, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Williamson's specialty?
- Joseph Williamson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Joseph Williamson located?
- Joseph Williamson's practice location on file with NPPES is 405 Lancaster Ave, Greer, SC 29650-1235.
- What is Joseph Williamson's phone number?
- The practice phone number listed in the NPPES registry for Joseph Williamson is (864) 977-7000.
- Does Joseph Williamson accept Medicare?
- Joseph Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Williamson's NPI active?
- Yes — Joseph Williamson's NPI (1326849407) is active in the NPPES registry as of the last update on 2025-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.