Dr. John R. Armstrong, MD
- Medicare services, 2022
- 24
- Part D claims, 2024
- 14,858
- Hospital affiliations
- 4
- Industry payments
- $136
- Medical group
- 1
- Practice address
- 74 Access Highway, Caribou, ME 04736
- Practice phone
- Call (207) 498-2356
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Pines Health Services - Caribou (Access Hwy)
FQHC - Main Site · Caribou, Maine
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. John R. Armstrong is a family medicine physician in Caribou, Maine
Dr. Armstrong practices at Pines Health Services - Caribou (Access Hwy) in Caribou, Maine.
Dr. Armstrong's NPI, 1952893406, was assigned on May 31, 2018. Dr. Armstrong graduated from Tufts University School of Medicine in 2018. Dr. Armstrong holds Maine license MD24735.
- NPI
- 1952893406NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4486902319
- NPI enumeration date
- May 31, 2018
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (207) 498-2356
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 34
- Medical school graduation
- 2018
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John R. Armstrong practices at Pines Health Services - Caribou (Access Hwy) in Caribou, Maine
Dr. Armstrong's primary practice is Pines Health Services - Caribou (Access Hwy), at 74 Access Highway, Caribou, ME 04736 in Aroostook County. The practice phone is (207) 498-2356.
- Pines Health Services - Caribou (Access Hwy)74 Access Highway, Caribou, ME 04736 · Aroostook CountyPhone(207) 498-2356
Source: Dmand AI Affiliation Data
Dr. John R. Armstrong is affiliated with 10 sites of care and 1 medical group
Dr. Armstrong's primary practice is Pines Health Services - Caribou (Access Hwy) in Caribou, Maine. Dr. Armstrong is also affiliated with Cary Medical Center. The medical group on file is Pines Health Services. Dmand AI also links Dr. Armstrong to 3 more hospitals, 2 home health agencies, 2 skilled nursing facilities and 1 hospice, each named with a free account. Dr. Armstrong's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John R. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 10 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Pines Health Services - Caribou (Access Hwy) | Available with a free account |
| +9 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John R. Armstrong is one of 991 family medicine physicians in Maine
Family medicine is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Armstrong is licensed in Maine.
Specialties and state licenses
- Family medicine, MainePrimary
Family medicine physicians near Dr. Armstrong
Counts of family medicine physicians 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. John R. Armstrong billed Medicare for 24 services in 2022
CMS data shows 24 Medicare services from Dr. Armstrong across 1 procedure code in 2022. Medicare paid $229 for them. Every service was in an office.
Dr. Armstrong compared with the Maine median for family medicine physicians, 2022
- Dr. Armstrong
- Maine median
- Medicare services
- 24vs 19087% below
- Part D claims
- 13,900vs 55824.9 times
Medians across 1,046 family medicine physicians in Maine with Dmand AI profiles that report each measure.
Dr. Armstrong's most billed Medicare procedure codes, 2022
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Armstrong and other family medicine physicians in Maine.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John R. Armstrong's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Armstrong's median patient age at 69, with 44% 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 69
Patient panel by sex, all payers
- Women44%
- Men56%
Source: Dmand AI Patient Panel Data
Dr. John R. Armstrong wrote 14,858 Medicare Part D claims in 2024
In 2024, Dr. Armstrong wrote 14,858 Medicare Part D claims for 958 patients. 83% of them were for generic drugs. CMS names the drug for 13,900 of them, across 194 drugs with 11 or more claims each, at $1,096,663 in total drug cost. In 2023, CMS named 9,018 claims across 153 drugs.
Dr. Armstrong's Part D claims by kind of drug, 2024
- Generic12,391 claims83%
- Brand-name2,406 claims16%
- Other61 claims0%
Dr. Armstrong's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Armstrong's Part D claims, 2024
- Opioids3%386 of 14,858 claims
- Antibiotics2%225 of 14,858 claims
- Antipsychotics, patients 65 and over1%123 of 14,858 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 9,0182024: 13,90054%
Drugs named by CMS: 194 in 2024, 153 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. John R. Armstrong takes part in Medicare
Dr. Armstrong accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John R. Armstrong received $136 in industry payments in 2024
CMS Open Payments shows 6 general payments to Dr. Armstrong from 5 drug and device companies in 2024. Food and beverage make up the largest share, 100% of the total. Novo Nordisk Inc paid the most, $40.
Companies that paid Dr. Armstrong the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John R. Armstrong graduated from Tufts University School of Medicine
Dr. Armstrong graduated from Tufts University School of Medicine in 2018.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. John R. 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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| 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. John R. 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. John R. Armstrong's NPI number?
Dr. John R. Armstrong's NPI number is 1952893406. It was assigned on May 31, 2018, and it is active in the NPI Registry.
What kind of doctor is Dr. John R. Armstrong?
Dr. John R. Armstrong is a family medicine physician in Caribou, Maine. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. John R. Armstrong practice?
Dr. Armstrong practices at 74 Access Highway, Caribou, ME 04736. Dr. Armstrong's primary practice is Pines Health Services - Caribou (Access Hwy) in Caribou, Maine. Dmand AI also links Dr. Armstrong to 3 hospitals, 2 home health agencies, 2 skilled nursing facilities and 1 hospice.
What is Dr. John R. Armstrong's office phone number?
The practice phone on file for Dr. Armstrong is (207) 498-2356.
What is Dr. John R. Armstrong's medical license number?
Dr. Armstrong holds Maine license MD24735.
Which hospitals is Dr. John R. Armstrong affiliated with?
Dr. Armstrong is affiliated with Cary Medical Center. Dmand AI links Dr. Armstrong to 3 more hospitals.
What medical group is Dr. John R. Armstrong part of?
Dr. Armstrong is linked to Pines Health Services.
Does Dr. John R. Armstrong accept Medicare?
Yes. CMS data shows Dr. Armstrong billed Medicare for 24 services in 2022, and Dr. Armstrong accepts Medicare assignment.
What services does Dr. John R. Armstrong bill to Medicare?
In 2022, Dr. Armstrong's most billed Medicare services were lab and pathology test (83036).
Where did Dr. John R. Armstrong go to medical school?
Dr. Armstrong graduated from Tufts University School of Medicine in 2018.
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What drugs does Dr. John R. Armstrong prescribe most?
In 2024 Medicare Part D data, Dr. Armstrong's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Pantoprazole Sodium.
Has Dr. John R. Armstrong received payments from drug or device companies?
CMS Open Payments shows $136 in general payments to Dr. Armstrong from 5 companies from 2024 to 2024. The largest total came from Novo Nordisk Inc.
How long has Dr. John R. Armstrong been practicing?
Dr. Armstrong graduated from medical school in 2018, 8 years ago.
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