James Duncan
NPI 1720556020 · Addiction (Substance Use Disorder) Counselor · Columbus, OH
James Duncan is a Addiction (Substance Use Disorder) Counselor provider in Columbus, OH (NPI 1720556020).
Provider details
- NPI number
- 1720556020
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
- License
- 167096 (OH)
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
7 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
- 2018-11-05
- Last updated
- 2018-11-05
Frequently asked questions
- What is James Duncan's NPI number?
- James Duncan's National Provider Identifier (NPI) is 1720556020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Duncan's specialty?
- James Duncan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is James Duncan located?
- James Duncan's practice location on file with NPPES is 16 W Long St, Columbus, OH 43215-2815.
- What is James Duncan's phone number?
- The practice phone number listed in the NPPES registry for James Duncan is (614) 225-0980.
- Is James Duncan's NPI active?
- Yes — James Duncan's NPI (1720556020) is active in the NPPES registry as of the last update on 2018-11-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.