Dr. Charles B. Armstrong, MD
- Part D claims, 2024
- 567
- Industry payments
- $141
- Affiliated sites
- 2
- Medical group
- 1
- State licenses
- 2
- Practice address
- 280 Exempla Cr, Lafayette, CO 80026
- Practice phone
- Call (303) 338-3456
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Rock Creek Medical Offices
Mammography / Breast Imaging Center · Lafayette, Colorado
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. Charles B. Armstrong is an otolaryngologist in Lafayette, Colorado
Dr. Armstrong practices at Rock Creek Medical Offices in Lafayette, Colorado.
Dr. Armstrong's NPI, 1912958067, was assigned on May 13, 2006. Dr. Armstrong graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2004. Dr. Armstrong holds Colorado license 50262.
- NPI
- 1912958067NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8224188081
- NPI enumeration date
- May 13, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (303) 338-3456
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Charles B. Armstrong practices at Rock Creek Medical Offices in Lafayette, Colorado
Dr. Armstrong's primary practice is Rock Creek Medical Offices, at 280 Exempla Cr, Lafayette, CO 80026. The practice phone is (303) 338-3456.
- Rock Creek Medical Offices280 Exempla Cr, Lafayette, CO 80026Phone(303) 338-3456
Source: Dmand AI Affiliation Data
Dr. Charles B. Armstrong is affiliated with 2 sites of care and 1 medical group
Dr. Armstrong's primary practice is Rock Creek Medical Offices in Lafayette, Colorado. The medical group on file is Colorado Permanente Medical Group. Dmand AI also links Dr. Armstrong to 1 more therapy and rehab clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles B. Armstrong's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Armstrong practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Rock Creek Medical Offices | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Charles B. Armstrong is one of 166 otolaryngologists in Colorado
Otolaryngology is Dr. Armstrong's primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dmand AI has Dr. Armstrong's licenses on file in 2 states: Colorado and Wisconsin.
Specialties and state licenses
- Otolaryngology, ColoradoPrimary
- Wisconsin license
Otolaryngologists near Dr. Armstrong
Counts of otolaryngologists 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. Charles B. Armstrong's patients have a median age of 42
Across all payers, Dmand AI patient panel data puts Dr. Armstrong's median patient age at 42, with 51% 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 42
Patient panel by sex, all payers
- Women51%
- Men49%
Source: Dmand AI Patient Panel Data
Dr. Charles B. Armstrong wrote 567 Medicare Part D claims in 2024
In 2024, Dr. Armstrong wrote 567 Medicare Part D claims for 202 patients. 99% of them were for generic drugs. CMS names the drug for 518 of them, across 16 drugs with 11 or more claims each, at $12,577 in total drug cost. In 2023, CMS named 427 claims across 15 drugs.
Dr. Armstrong's Part D claims by kind of drug, 2024
- Generic564 claims99%
- Brand-name and other3 claims1%
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
- Opioids4%22 of 567 claims
- Antibiotics17%97 of 567 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: 4272024: 51821%
Drugs named by CMS: 16 in 2024, 15 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. Charles B. 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. Charles B. Armstrong received $141 in industry payments in 2019
CMS Open Payments shows 4 general payments to Dr. Armstrong from 1 drug or device company in 2019. Food and beverage make up the largest share, 100% of the total. Smith & Nephew, Inc. paid the most, $141.
Companies that paid Dr. Armstrong the most, 2019 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Charles B. Armstrong graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Dr. Armstrong graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2004.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Charles B. 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 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. Charles B. 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. Charles B. Armstrong's NPI number?
Dr. Charles B. Armstrong's NPI number is 1912958067. It was assigned on May 13, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles B. Armstrong?
Dr. Charles B. Armstrong is an otolaryngologist in Lafayette, Colorado. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. Charles B. Armstrong practice?
Dr. Armstrong practices at 280 Exempla Cr, Lafayette, CO 80026. Dr. Armstrong's primary practice is Rock Creek Medical Offices in Lafayette, Colorado. Dmand AI also links Dr. Armstrong to 1 therapy and rehab clinic.
What is Dr. Charles B. Armstrong's office phone number?
The practice phone on file for Dr. Armstrong is (303) 338-3456.
What is Dr. Charles B. Armstrong's medical license number?
Dr. Armstrong holds Colorado license 50262, one of the licenses on file in 2 states.
Which states has Dr. Charles B. Armstrong been licensed in?
Dmand AI has state licenses on file for Dr. Armstrong in Colorado and Wisconsin.
What medical group is Dr. Charles B. Armstrong part of?
Dr. Armstrong is linked to Colorado Permanente Medical Group.
Does Dr. Charles B. Armstrong accept Medicare?
Yes. CMS lists Dr. Armstrong as accepting Medicare assignment.
Where did Dr. Charles B. Armstrong go to medical school?
Dr. Armstrong graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2004.
What drugs does Dr. Charles B. Armstrong prescribe most?
In 2024 Medicare Part D data, Dr. Armstrong's most prescribed drugs by claims were Mupirocin, Azelastine HCl and Fluticasone Propionate.
Has Dr. Charles B. Armstrong received payments from drug or device companies?
CMS Open Payments shows $141 in general payments to Dr. Armstrong from 1 company from 2019 to 2019. The largest total came from Smith & Nephew, Inc.
How long has Dr. Charles B. Armstrong been practicing?
Dr. Armstrong graduated from medical school in 2004, 22 years ago.
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