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

Trisha Diane Overvaag

Individual provider Psychiatric/Mental Health Nurse Practitioner · NPI 1215546155

Trisha Diane Overvaag is a Nurse Practitioner in Phoenix, Arizona. Qualified in 2020, 6 years ago. Practices with Southwest Behavioral Health Services Inc, a 48-clinician group and works from 2 locations. Licensed in Arizona.

Years since qualifying
6
Licensed in
AZ
In the registry since
2020
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Practice location Address checks out

610 E Baseline Rd Ste 5
Phoenix, AZ 85042-6536
Phone: (602) 230-7373
Fax: (602) 441-5836
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 14811 W Bell Rd Ste 102, Surprise, AZ 85374-7602 — (623) 328-7323

Specialties & licences

Psychiatric/Mental Health Nurse Practitioner (primary) Taxonomy 363LP0808X · Licence 244751 (AZ)

Record details

NPI number1215546155
Entity typeIndividual (Type 1)
GenderFemale
Sole proprietorNo
NPI enumeratedJuly 27, 2020
Last updated in NPPESDecember 12, 2023
Certification dateDecember 12, 2023

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Southwest Behavioral Health Services Inc — 48 clinicians
Accepts Medicare assignment Not indicated

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients11
Services billed 46 a service is one billed item, such as a visit, a test or a procedure
Average patient age61

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Southwest Behavioral Health Services Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 48 clinicians in the practice; 12 are shown here.

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