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DR. DEANNA L. ARMSTRONG M.D.
NPI 1003900184
Psychiatry & Neurology - Psychiatry in Helena, MT

Active since October 03, 2006PECOS Enrolled
2755 COLONIAL DR, HELENA, MT 59601(406) 444-7500(406) 884-2085 Get Directions Write a Review

NPPES record last updated: May 6, 2024. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: May 6, 2024, Feb 28, 2022, May 17, 2018 (3 updates tracked since 2018).

About Dr. Deanna L. Armstrong M.d. NPPES

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

DR. DEANNA L. ARMSTRONG M.D. (NPI 1003900184) is an individual psychiatry provider in Helena, Montana, licensed in Montana (MED-PHYS-LIC-101070) and active in the NPI registry since October 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1003900184
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameDR. DEANNA L. ARMSTRONGCredential: M.D.
Location Address2755 COLONIAL DRHelena, MT 59601-4926
Mailing AddressPo Box 5539Helena, MT 59604-5539 · (406) 238-2500 · Fax (406) 884-2085
Phone(406) 444-7500
Fax(406) 884-2085
Sole ProprietorYes
Enumeration DateOctober 3, 2006
Last NPPES UpdateMay 6, 20243 updates tracked since enumeration
NPPES CertifiedMay 6, 2024
✔ NPI 1003900184 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in MT · MED-PHYS-LIC-101070
Definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

2755 COLONIAL DR, Helena, MT 59601
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Other Names 1

Former Name (1)Deanna L. Munisteri M.d.

Other Identifiers 1

Medicaid1003900184WA

Accepted Insurance

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

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Deanna L. Armstrong 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 59601 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$172.26 typical visit price
range $56.81 – $172.26
Typical copayment $43.06 (range $14.20 – $43.06)
Most-billed visit code 99205
Established Patient
$70.82 typical visit price
range $18.24 – $140.32
Typical copayment $17.70 (range $4.56 – $35.08)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

CHRISTINA MARIE HAWBAKER GC
Genetic Counselor, MS
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1061
MS. CYNTHIA MARIE HUDSON MA, MS
Genetic Counselor, MS
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
MARY KATHRYN SCHIEL MSN, APRN, PMHNP-BC
Nurse Practitioner (Psychiatric/Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
COURTNEY LYNNE ROGASKI LCSW
Social Worker (Clinical)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
ALICIA MARIE GALAHAN
Nurse Practitioner (Psychiatric/Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
MS. BLANCHE NICOLE SUMNER MS, LCPC
Counselor (Mental Health)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-7500
THOMAS BOGEN OTR/L
Occupational Therapist
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1129
LAURA RIDGE LCPC
Counselor (Professional)
2755 COLONIAL DR
HELENA, MT 59601
Lewis And Clark County (406) 444-1125

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 Deanna Armstrong's NPI number?

The NPI number for Deanna Armstrong is 1003900184. It was assigned to this individual provider in the NPPES registry on October 3, 2006. The provider is also known as Deanna L. Munisteri M.D..

Where is Deanna Armstrong located?

Deanna Armstrong practices at 2755 Colonial Dr, Helena, MT 59601. The listed phone number is (406) 444-7500.

What is Deanna Armstrong's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Deanna Armstrong enrolled in Medicare?

Yes. Deanna Armstrong is registered in the Medicare PECOS enrollment system.

What insurance does Deanna Armstrong accept?

Health plans from Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Texas list Deanna Armstrong 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 Deanna Armstrong was last updated on May 6, 2024. NPI Profile syncs with the weekly NPPES data releases published by CMS.