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INTEGRATIVE MENTAL HEALTH SERVICES, PLLC
NPI 1073111746
Nurse Practitioner - Psychiatric/Mental Health in Billings, MT

Active since October 14, 2020CLIA 27D2270902 · Waiver
926 MAIN ST STE 14, BILLINGS, MT 59105(406) 702-1466(406) 702-1591 Get Directions Write a Review

NPPES record last updated: December 6, 2022. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 6, 2022, Oct 14, 2020 (2 updates tracked since 2020).

About Integrative Mental Health Services, Pllc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

INTEGRATIVE MENTAL HEALTH SERVICES, PLLC (NPI 1073111746) is a healthcare organization registered as a psychiatric/mental health in Billings, Montana and active in the NPI registry since October 2020. The organization holds a CLIA Waiver certificate valid through October 23, 2026 and lists Messina M. Michalsky, Owner, as its authorized official.

NPPES Registry Identity

NPI1073111746
Entity TypeOrganization
Primary Taxonomy363LP0808X
Legal Business NameINTEGRATIVE MENTAL HEALTH SERVICES, PLLC
Location Address926 MAIN ST STE 14Billings, MT 59105-3359
Mailing Address926 Main St Ste 14Billings, MT 59105-3359 · (406) 702-1466 · Fax (406) 702-1591
Phone(406) 702-1466
Fax(406) 702-1591
Organization SubpartNo
Authorized OfficialMessina M. MichalskyOwner · (406) 861-6328
Enumeration DateOctober 14, 2020
Last NPPES UpdateDecember 6, 20222 updates tracked since enumeration
NPPES CertifiedDecember 6, 2022
✔ NPI 1073111746 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
Also ListedClinic/Center · Mental Health (Including Community Mental Health Center)Taxonomy 261QM0801X
926 MAIN ST STE 14, Billings, MT 59105
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Blue Cross and Blue Shield of Montana.Insurance ›

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 27D2270902

Integrative Mental Health Services · Billings, MT
Active · expires Oct 23, 2026
CLIA Number27D2270902
Laboratory TypePractitioner Other
Certificate Effective DateOctober 24, 2024
Certificate Expiration DateOctober 23, 2026
Laboratory DirectorMessina M. Michalsky
Laboratory Phone(406) 702-1466
Laboratory LocationIntegrative Mental Health Services926 Main Street, Suite 14, Billings, MT 59105
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Other Providers at the Same Location NPPES 5

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MONTANA MINDSET LLC
Social Worker (Clinical)
926 MAIN ST STE 14
BILLINGS, MT 59105
Yellowstone County (406) 831-0631
ONORINA MICHALSKY LCPC
Counselor (Mental Health)
926 MAIN ST STE 14
BILLINGS, MT 59105
Yellowstone County (406) 530-5798
MESSINA M. MICHALSKY PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
926 MAIN ST STE 14
BILLINGS, MT 59105
Yellowstone County (406) 702-1466
MRS. ELIZABETH MCGILLVRAY MSW
Social Worker (Clinical)
926 MAIN ST STE 14
BILLINGS, MT 59105
Yellowstone County (406) 831-0631
ALLISON GIUSTI SEARS NP
Nurse Practitioner (Psychiatric/Mental Health)
926 MAIN ST STE 14
BILLINGS, MT 59105
Yellowstone County (406) 702-1466

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Integrative Mental Health Services, PLLC's NPI number?

The NPI number for Integrative Mental Health Services, PLLC is 1073111746. It was assigned to this organization in the NPPES registry on October 14, 2020.

Where is Integrative Mental Health Services, PLLC located?

Integrative Mental Health Services, PLLC is located at 926 Main St Ste 14, Billings, MT 59105. The listed phone number is (406) 702-1466.

What is Integrative Mental Health Services, PLLC's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Does Integrative Mental Health Services, PLLC hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 27D2270902) is associated with this NPI, valid through October 23, 2026. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

What insurance does Integrative Mental Health Services, PLLC accept?

Health plans from Blue Cross and Blue Shield of Montana list Integrative Mental Health Services, PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Integrative Mental Health Services, PLLC was last updated on December 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.