John Ernst, MS
NPI 1740355395 · Professional Counselor · Waukesha, WI
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Ernst, MS is a Professional Counselor provider in Waukesha, WI (NPI 1740355395).
Provider details
- NPI number
- 1740355395
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Credential
- MS
- Sex
- Male
- Sole proprietor
- No
- License
- 1549-125 (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
19 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
- 2006-11-21
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Ernst's NPI number?
- John Ernst's National Provider Identifier (NPI) is 1740355395, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Ernst's specialty?
- John Ernst is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is John Ernst located?
- John Ernst's practice location on file with NPPES is 721 American Ave, Waukesha, WI 53188-5071.
- What is John Ernst's phone number?
- The practice phone number listed in the NPPES registry for John Ernst is (262) 928-2396.
- Does John Ernst accept Medicare?
- John Ernst is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Ernst's NPI active?
- Yes — John Ernst's NPI (1740355395) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.