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

Tatyana P Siminak, APNP

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1366196685

Tatyana P Siminak, APNP is a Nurse Practitioner in Mequon, Wisconsin. Qualified in 2021, 5 years ago. Practices with Cornerstone Counseling Services Inc, a 328-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Wisconsin.

Years since qualifying
5
Licensed in
WI
In the registry since
2022
Specialties on file
2

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.

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 11724 (WI)
Nurse Practitioner Taxonomy 363L00000X · Licence 11724 (WI)

Record details

NPI number1366196685
Entity typeIndividual (Type 1)
GenderFemale
Credentials APNP
Sole proprietorNo
NPI enumeratedFebruary 6, 2022
Last updated in NPPESMay 22, 2026
Certification dateMay 22, 2026

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Cornerstone Counseling Services Inc — 328 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Mequon