William Harris
NPI 1114983459 · Addiction (Substance Use Disorder) Counselor · Columbia, SC
William Harris is a Addiction (Substance Use Disorder) Counselor provider in Columbia, SC (NPI 1114983459).
Provider details
- NPI number
- 1114983459
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
83% 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
- 2006-04-25
- Last updated
- 2016-10-05
Frequently asked questions
- What is William Harris's NPI number?
- William Harris's National Provider Identifier (NPI) is 1114983459, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Harris's specialty?
- William Harris is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is William Harris located?
- William Harris's practice location on file with NPPES is 2711 Colonial Dr, Columbia, SC 29203-6818.
- What is William Harris's phone number?
- The practice phone number listed in the NPPES registry for William Harris is (706) 542-9700.
- Is William Harris's NPI active?
- Yes — William Harris's NPI (1114983459) is active in the NPPES registry as of the last update on 2016-10-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.