Brian Armstrong, MD
NPI 1285781179 · Ophthalmology Physician · Largo, MD
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brian Armstrong, MD is a Ophthalmology Physician provider in Largo, MD (NPI 1285781179).
Provider details
- NPI number
- 1285781179
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- D0072713 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
294 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Scan of Cornea92025 | 53 | $18 |
| Established Patient Complete Exam of Visual System92014 | 47 | $71 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 46 | $90 |
| Measurement of Corneal Curvature and Depth of Eye92136 | 27 | $28 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 26 | $121 |
| Established Patient Problem Focused Exam of Visual System92012 | 25 | $46 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisolone Acetate | 90 | 46 |
| Moxifloxacin Hclbrand: Moxifloxacin | 29 | 16 |
| Doxycycline Monohydrate | 26 | 12 |
| Cenegermin-Bkbjbrand: Oxervate | 26 | — |
| Cyclosporinebrand: Restasis | 25 | 11 |
| Lifitegrastbrand: Xiidra | 20 | — |
| Perfluorohexyloctane/Pfbrand: Miebo | 15 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,585 across 16 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-01-04
- Last updated
- 2011-09-30
Frequently asked questions
- What is Brian Armstrong's NPI number?
- Brian Armstrong's National Provider Identifier (NPI) is 1285781179, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brian Armstrong's specialty?
- Brian Armstrong is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Brian Armstrong located?
- Brian Armstrong's practice location on file with NPPES is 1221 Mercantile Ln, Largo, MD 20774-5374.
- What is Brian Armstrong's phone number?
- The practice phone number listed in the NPPES registry for Brian Armstrong is (301) 618-5500.
- Does Brian Armstrong accept Medicare?
- Brian Armstrong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brian Armstrong's NPI active?
- Yes — Brian Armstrong's NPI (1285781179) is active in the NPPES registry as of the last update on 2011-09-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.