IndividualActive
John Duffey, LPC
NPI 1043794324 · Professional Counselor · Greenfield, WI
John Duffey, LPC is a Professional Counselor provider in Greenfield, WI (NPI 1043794324).
Provider details
- NPI number
- 1043794324
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- LPC
- Sex
- Male
- Sole proprietor
- Yes
- License
- 7094-125 (WI)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(67/100 index)
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
Child & Family Therapeutic Systems
4811 S 76 Street #305
Greenfield, WI 53220-4364
Phone: (414) 325-7741
Approximate (ZIP-level) locationGet directions
Mailing address
7100 W Bluemound Rd
Wauwatosa, WI 53213-3723
Registry dates
- Enumerated
- 2018-09-21
- Last updated
- 2025-07-01
- Certified
- 2025-06-13
Frequently asked questions
- What is John Duffey's NPI number?
- John Duffey's National Provider Identifier (NPI) is 1043794324, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Duffey's specialty?
- John Duffey is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is John Duffey located?
- John Duffey's practice location on file with NPPES is Child & Family Therapeutic Systems, Greenfield, WI 53220-4364.
- What is John Duffey's phone number?
- The practice phone number listed in the NPPES registry for John Duffey is (414) 325-7741.
- Is John Duffey's NPI active?
- Yes — John Duffey's NPI (1043794324) is active in the NPPES registry as of the last update on 2025-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.