John Ernst, MS
Professional Counselor · Waukesha, WI
John Ernst, MS is a professional counselor with a practice address in Waukesha, Wisconsin, and NPI 1740355395, issued on Nov 21, 2006. Check the license (Wisconsin 1549-125, as entered in NPPES) with the Wisconsin board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Ernst
- Credential
- MS
- Primary taxonomy
- Professional Counselor 101YP2500X
- License number
- 1549-125 WI
Self-reported in NPPES; status is on the state search - Practice location
- 721 American Ave, Waukesha, WI 53188
- Phone
- (262) 928-2396
- Enumerated
- Nov 21, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (262) 544-1213
- Medicaid ID
- 40989900 WI
- Entity
- Type 1 · individual
8 nearest professional counselor records → All 4,459 in Wisconsin → Look up another NPI →
Also registered at 721 American Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John Ernst in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 1549-125Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Ernst among 4,459 professional counselor records in Wisconsin
John Ernst, MS is one of 4,459 professional counselor records with a practice address in Wisconsin. 21% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 93% newer
- In a Medicare fileNo · 21% of these records are
- In the CMS Doctors and Clinicians fileNo · 27% of these records are
- Record last updated2007 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YP2500X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
149 professional counselor records list a practice address in Waukesha
They are 149 of the 2,814 NPPES records with a practice address in Waukesha, and 4,459 professional counselor records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 4,459 in Wisconsin → Every provider in Waukesha → Professional Counselor nationwide →
The 8 professional counselor records with the nearest ZIP codes
- Ivette Alvarado, MS, LPC, RADCWaukesha, WI 531881174686141
- Richard Baker, CSW LPCWaukesha, WI 531881801957832
- Jill Bibler, MSWaukesha, WI 531881023176492
- Karen Copeland, MSWaukesha, WI 531881508930876
- Lauri Flick-HartyWaukesha, WI 531881063519049
- Corrine Gresen, RNWaukesha, WI 531881972668457
- Bradley Haas, M.S. LPC, CADCWaukesha, WI 531881164585998
- Michael Jaworski, LPC, CADCWaukesha, WI 531881861413130
Common questions
What is John Ernst, MS's NPI number?
John Ernst, MS's National Provider Identifier (NPI) is 1740355395, issued on Nov 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Ernst, MS located?
The NPPES record lists a practice address at 721 American Ave, Waukesha, WI, 53188. Phone: (262) 928-2396. Providers update this record themselves, so call before visiting.
How can I verify John Ernst, MS's license?
NPPES lists Wisconsin license number 1549-125, as entered by the provider. Search the Wisconsin board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.