Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. Holly J Wonder, LPC

Individual provider Professional Counselor · NPI 1790063170

Dr. Holly J Wonder, LPC is a Mental Health Counselor in Mequon, Wisconsin. Qualified in 1985, 41 years ago. Practices with Cornerstone Counseling Services Inc, a 328-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
41
Licensed in
WI
In the registry since
2011
What do these letters mean?
LPC — Licensed Professional Counselor
A licensed mental health counsellor.

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Practice location Address checks out

11649 N Port Washington Rd Ste 221
Mequon, WI 53092-3461
Phone: (262) 912-1922
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 11518 N Port Washington Rd Ste 202, Mequon, WI 53092-3443 — (262) 244-6177

Specialties & licences

Professional Counselor (primary) Taxonomy 101YP2500X · Licence 7697 (WI)

Record details

NPI number1790063170
Entity typeIndividual (Type 1)
GenderFemale
Credentials LPC
Sole proprietorNo
NPI enumeratedAugust 2, 2011
Last updated in NPPESOctober 29, 2025
Certification dateOctober 29, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMENTAL HEALTH COUNSELOR
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Group practice Cornerstone Counseling Services Inc — 328 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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