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CONSTANCE MASH M.D.
NPI 1114283918
Psychiatry & Neurology - Child & Adolescent Psychiatry in Kalispell, MT

Active since April 05, 2012PECOS Enrolled
200 HERITAGE WAY, KALISPELL, MT 59901(406) 756-3950(406) 756-3957 Get Directions Write a Review

NPPES record last updated: November 27, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jun 26, 2020, Aug 28, 2017, Jul 20, 2017 and 2 more (5 updates tracked since 2016).

About Constance Mash M.d. NPPES

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

CONSTANCE MASH M.D. (NPI 1114283918) is an individual child & adolescent psychiatry provider in Kalispell, Montana, licensed in Montana (57432) and active in the NPI registry since April 2012. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1114283918
Entity TypeIndividualFemale
Primary Taxonomy2084P0804X
Provider Legal NameCONSTANCE MASHCredential: M.D.
Location Address200 HERITAGE WAYKalispell, MT 59901-3146
Mailing Address200 Heritage WayKalispell, MT 59901-3146 · (406) 756-3950 · Fax (406) 756-3957
Phone(406) 756-3950
Fax(406) 756-3957
Sole ProprietorNo
Enumeration DateApril 5, 2012
Last NPPES UpdateNovember 27, 20235 updates tracked since enumeration
NPPES CertifiedJune 26, 2020
✔ NPI 1114283918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License✔ Licensed in MT · 57432
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
Also ListedPsychiatry & Neurology · PsychiatryTaxonomy 2084P0800X · License 57432 (MT), ML60287746 (WA)
200 HERITAGE WAY, Kalispell, MT 59901
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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, Mountain Health CO-OP, PacificSource Health Plans.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Constance Mash M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Constance Mash reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kalispell Regional Medical Center, Inc
Same address
Clinic/Center
200 HERITAGE WAY
Kalispell, MT 59901
  • Reassigned Medicare billing, Montana enrollment
  • 483 clinicians in this Medicare group
NPI 1285689539 (406) 756-3950

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

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

TARA L TROTTER LCPC
Counselor (Professional)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950
JASON ANDREW HEISEY
Counselor (Mental Health)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950
TRACY K MAYER LCSW
Social Worker (Clinical)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950
STEPHANIE R GORDON MSW, LCSW
Social Worker (Clinical)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950
KALISPELL REGIONAL MEDICAL CENTER, INC
Counselor (Professional)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950
JOHN M BRANDON LCPC
Counselor (Professional)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950
MRS. LINDSEY MARIE JORDAN LCSW
Social Worker
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 751-8270
DR. CHRISTOPHER PAUL ROMANN MD
Psychiatry & Neurology (Psychiatry)
200 HERITAGE WAY
KALISPELL, MT 59901
Flathead County (406) 756-3950

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 Constance Mash's NPI number?

The NPI number for Constance Mash is 1114283918. It was assigned to this individual provider in the NPPES registry on April 5, 2012.

Where is Constance Mash located?

Constance Mash practices at 200 Heritage Way, Kalispell, MT 59901. The listed phone number is (406) 756-3950.

What is Constance Mash's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

Is Constance Mash enrolled in Medicare?

Yes. Constance Mash is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Constance Mash's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Constance Mash reassigns Medicare benefits to Kalispell Regional Medical Center, Inc (Kalispell, MT). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Constance Mash's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Constance Mash accept?

Health plans from Blue Cross and Blue Shield of Montana, Mountain Health CO-OP and PacificSource Health Plans list Constance Mash 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 Constance Mash was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.