William Marshall, M.D.
NPI 1669418307 · Family Medicine Physician · Greenville, SC
William Marshall, M.D. is a Family Medicine Physician provider in Greenville, SC (NPI 1669418307).
Provider details
- NPI number
- 1669418307
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 6434 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2006-06-21
- Last updated
- 2013-08-21
Frequently asked questions
- What is William Marshall's NPI number?
- William Marshall's National Provider Identifier (NPI) is 1669418307, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Marshall's specialty?
- William Marshall is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is William Marshall located?
- William Marshall's practice location on file with NPPES is 215 Halton Rd, Greenville, SC 29607-3509.
- What is William Marshall's phone number?
- The practice phone number listed in the NPPES registry for William Marshall is (864) 454-2700.
- Is William Marshall's NPI active?
- Yes — William Marshall's NPI (1669418307) is active in the NPPES registry as of the last update on 2013-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.