Dr. Deanna L. Armstrong, MD
- Part D claims, 2023
- 11
- Hospital affiliations
- 1
- Industry payments
- $4,111
- Medical groups
- 3
- State license
- 1
- Practice address
- 2755 Colonial Dr, Helena, MT 59601
- Practice phone
- Call (406) 444-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Armstrong's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Deanna L. Armstrong is a psychiatrist in Billings, Montana
Dr. Armstrong practices at Shodair Children's Hospital in Helena, Montana, part of Shodair Children's Hospital.
Dr. Armstrong's NPI, 1003900184, was assigned on October 3, 2006. Dr. Armstrong holds Montana license MED-PHYS-LIC-101070.
- NPI
- 1003900184NPI Registry (opens in a new tab)
- NPI enumeration date
- October 3, 2006
- NPI status
- Active
- Practice phone
- (406) 444-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Deanna L. Armstrong practices in Helena and Billings
Dr. Armstrong's primary practice is Shodair Children's Hospital, at 2755 Colonial Dr, Helena, MT 59601 in Lewis And Clark County. The practice phone is (406) 444-7500. The NPI Registry lists Dr. Armstrong's practice address as 2800 10th N Ave, Billings, MT 59101.
- Shodair Children's HospitalPrimary2755 Colonial Dr, Helena, MT 59601 · Lewis And Clark CountyPhone(406) 444-7500
- NPI Registry address2800 10th N Ave, Billings, MT 59101 · Yellowstone CountyPhone(406) 444-7500
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Deanna L. Armstrong is affiliated with 1 site of care and 3 medical groups
Dr. Armstrong's primary practice is Shodair Children's Hospital in Helena, Montana, part of Shodair Children's Hospital. The medical group on file is Billings Clinic. Dmand AI also links Dr. Armstrong to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Deanna L. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Shodair Children's Hospital | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Shodair Children's Hospital and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Deanna L. Armstrong is one of 108 psychiatrists in Montana
Psychiatry is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Armstrong is licensed in Montana.
Specialties and state licenses
- Psychiatry, MontanaPrimary
Psychiatrists near Dr. Armstrong
Counts of psychiatrists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Deanna L. Armstrong's patients have a median age of 16
Across all payers, Dmand AI patient panel data puts Dr. Armstrong's median patient age at 16, with 80% women.
Dr. Armstrong's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 16
Patient panel by sex, all payers
- Women80%
- Men20%
Source: Dmand AI Patient Panel Data
Dr. Deanna L. Armstrong wrote 11 Medicare Part D claims in 2023
In 2023, Dr. Armstrong wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $42 in total drug cost. In 2019, CMS named 26 claims across 2 drugs.
Dr. Armstrong's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2023
- 2019
- 2023
- Claims for drugs CMS names
- 2019: 262023: 1158%
Drugs named by CMS: 1 in 2023, 2 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Deanna L. Armstrong received $4,111 in industry payments from 2016 to 2022
CMS Open Payments shows 95 general payments to Dr. Armstrong from 8 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Janssen Pharmaceuticals, Inc paid the most, $1,197.
General payments to Dr. Armstrong by program year, 2016 to 2022
General payments to Dr. Armstrong by kind, 2016 to 2022
- Food and beverage$4,108100%
- Education$30%
Companies that paid Dr. Armstrong the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Deanna L. Armstrong's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Deanna L. Armstrong
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Deanna L. Armstrong's NPI number?
Dr. Deanna L. Armstrong's NPI number is 1003900184. It was assigned on October 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Deanna L. Armstrong?
Dr. Deanna L. Armstrong is a psychiatrist in Billings, Montana. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. Deanna L. Armstrong practice?
Dr. Armstrong practices at 2755 Colonial Dr, Helena, MT 59601. Dr. Armstrong also practices at 2800 10th N Ave, Billings, MT 59101. Dr. Armstrong's primary practice is Shodair Children's Hospital in Helena, Montana, part of Shodair Children's Hospital. Dmand AI also links Dr. Armstrong to 2 medical groups.
What is Dr. Deanna L. Armstrong's office phone number?
The practice phone on file for Dr. Armstrong is (406) 444-7500.
What is Dr. Deanna L. Armstrong's medical license number?
Dr. Armstrong holds Montana license MED-PHYS-LIC-101070.
Which hospitals is Dr. Deanna L. Armstrong affiliated with?
Dr. Armstrong practices at Shodair Children's Hospital in Helena, Montana.
What medical group is Dr. Deanna L. Armstrong part of?
Dr. Armstrong is linked to Billings Clinic. Dmand AI links Dr. Armstrong to 2 more medical groups.
What drugs does Dr. Deanna L. Armstrong prescribe most?
In 2023 Medicare Part D data, Dr. Armstrong's most prescribed drugs by claims were Clonazepam.
Has Dr. Deanna L. Armstrong received payments from drug or device companies?
CMS Open Payments shows $4,111 in general payments to Dr. Armstrong from 8 companies from 2016 to 2022. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Deanna L. Armstrong been practicing?
Dr. Armstrong's NPI was assigned in 2006.
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