Courtney Derus
Psychologist · Wausau, WI
Courtney Derus is a psychologist with a practice address in Wausau, Wisconsin, and NPI 1255765335, issued on Aug 26, 2013. Check the license (Wisconsin 3605-57, as entered in NPPES) with the Wisconsin board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Courtney Derus
- Primary taxonomy
- Psychologist 103T00000X
- License number
- 3605-57 WI
Self-reported in NPPES; status is on the state search - Practice location
- 114 Grand Ave, Wausau, WI 54403
- Phone
- (715) 845-7175
- Enumerated
- Aug 26, 2013
- Record last updated
- Oct 2, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (715) 845-7142
- Medicare enrollment
- Enrolled (PECOS I20181130002166); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 114 Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Abrams, LPC-ITMental Health Counselor1164949319
- Colleen Angel, LPC-ITProfessional Counselor1649718917
- Lisa Berry, LPCProfessional Counselor1710006523
- Dennis Elmergreen, MA, LPCMental Health Counselor1588218861
- Kandace Elmergreen, MSClinical Social Worker1497874291
- Natasha Elmergreen, LPC-ITProfessional Counselor1144115411
Verify Courtney Derus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Wisconsin board licenses this profession
Search for license 3605-57Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Elmergreen Associates, LLCWausau, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Psychologist providers in Wisconsin
There are 949 psychologist records in Wisconsin.
Other psychologist records in Wisconsin
- Heather Abercrombie, PHDMadison, WI1275509333
- Craig Abrams, PHDSheboygan, WI1750367116
- Michael Accardo, PHD, LPMiddleton, WI1396417366
- Marc Ackerman, PHDGlendale, WI1972687358
- Duncan Adams, PHDSheboygan, WI1881602423
- Noah Adrians, PH. D.Milwaukee, WI1487934683
- Ali Al-Humadi, PSYDGreen Bay, WI1427567684
- Kevin Allemagne, PH.D.Fitchburg, WI1437291705
- Carmen Alonso, PHDMadison, WI1154478717
- Thomas Altepeter, PH.D.Oshkosh, WI1871501452
Common questions
What is Courtney Derus's NPI number?
Courtney Derus's National Provider Identifier (NPI) is 1255765335, issued on Aug 26, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Courtney Derus located?
The NPPES record lists a practice address at 114 Grand Ave, Wausau, WI, 54403. Phone: (715) 845-7175. Providers update this record themselves, so call before visiting.
How can I verify Courtney Derus's license?
NPPES lists Wisconsin license number 3605-57, 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. Medicare files from data.cms.gov. 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.