Jeffrey Duncan
NPI 1366218570 · Addiction (Substance Use Disorder) Counselor · Waukesha, WI
Jeffrey Duncan is a Addiction (Substance Use Disorder) Counselor provider in Waukesha, WI (NPI 1366218570).
Provider details
- NPI number
- 1366218570
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 20451-130 (WI)
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
2 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
- 2023-11-29
- Last updated
- 2023-11-29
- Certified
- 2023-11-29
Frequently asked questions
- What is Jeffrey Duncan's NPI number?
- Jeffrey Duncan's National Provider Identifier (NPI) is 1366218570, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Duncan's specialty?
- Jeffrey Duncan is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Jeffrey Duncan located?
- Jeffrey Duncan's practice location on file with NPPES is 2422 N Grandview Blvd, Waukesha, WI 53188-6105.
- What is Jeffrey Duncan's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Duncan is (262) 549-6600.
- Is Jeffrey Duncan's NPI active?
- Yes — Jeffrey Duncan's NPI (1366218570) is active in the NPPES registry as of the last update on 2023-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.