NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1982611950 M.D.
Verify on CMS → Brian Harris, M.D.
Emergency Medicine Physician in Dededo, Guam.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in Emergency Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
582
Medicare Part D claims · 393 beneficiaries · Emergency Medicine Physician avg: 352
Generic prescribing
85%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Brian Harris, M.D. filed 582 Medicare Part D claims in 2023 as an Emergency Medicine Physician in Dededo, Guam, prescribing 85% generic.
- 582
- Part D claims, 2023
- 85%
- generic prescribing
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Brian Harris, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
582 Top 34% higher than 66% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
✓
Board certification likely (heuristic, not verified)
Brian Harris, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Brian Harris, M.D.?
Quality data not reportedPrimary specialty
Emergency Medicine Physician
Medicare Part D claims
582 65% vs specialty avg
Specialty distribution in Guam
How Emergency Medicine Physician compares to other specialties among Guam providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Emergency Medicine Physician. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Brian Harris, M.D. appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding M.D. credentials at 133 ROUTE 3, Dededo, GU, 96929, with a listed phone of (671) 645-5500. NPI 1982611950 was issued on 08/02/2006.
Medicare Part D records for calendar year 2023 show 582 prescription claims written by this provider, covering 393 Medicare beneficiaries and totaling roughly $8K in drug spend, split 7% brand-name and 85% generic by claim count, with an opioid prescribing rate of 2.1%.
Emergency Medicine Physician is a high-volume specialty nationwide, with 64,463 enrolled providers across 56 states and an average of 352 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline.
Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1982611950 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/02/2006 |
Hospital and facility affiliations
Facilities where Brian Harris, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Exer Medical Corporation
Calabasas, CA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Brand vs generic prescribing mix · Generic-heavy
Brian Harris, M.D. - brand share 7.0%
Emergency Medicine Physician average
7% brand-name claims vs 85% generic, on 582 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
582
Total Claims
$8K
Total Drug Cost
393
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 583
- Total Day Supply
- 4,872
- Brand vs Generic
- 7% brand / 85% generic
- Brand Drug Cost
- $2K
- Generic Drug Cost
- $5K
- Opioid Claims
- 12 (2.1% rate)
- Antibiotic Claims
- 253
Patient Demographics
- Average Patient Age
- 75.8 years
- Avg HCC Risk Score
- 0.97
- Gender Split
- 64% female / 36% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Brian Harris, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Azithromycin
Azithromycin
108 claims
- Prednisone
Prednisone
107 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
48 claims
- Nitrofurantoin Mon…
Nitrofurantoin Mono-Macro
46 claims
- Albuterol Sulfate … 38
Albuterol Sulfate Hfa
38 claims
- Paxlovid (Eua) 38
Paxlovid (Eua)
38 claims
- Cephalexin 16
Cephalexin
16 claims
- Ciprofloxacin Hcl 11
Ciprofloxacin Hcl
11 claims
| Drug | Claims |
|---|---|
| Azithromycin | 108 |
| Prednisone | 107 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 48 |
| Nitrofurantoin Mono-Macro Nitrofurantoin Monohyd/M-Cryst | 46 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 38 |
| Paxlovid (Eua) Nirmatrelvir/Ritonavir | 38 |
| Cephalexin | 16 |
| Ciprofloxacin Hcl | 11 |
| Levofloxacin | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Emergency Medicine Physician Overview
How Brian Harris, M.D. fits within the Emergency Medicine Physician landscape nationally.
64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider
Brian Harris, M.D.'s 582 claims are above the specialty average of 352.
Nearby Emergency Medicine Physician Providers in Guam
Other clinicians with the same primary specialty enrolled in Guam, drawn from the same CMS NPPES roster as Harris.
Jessica Arrott
Agana Heights, GU
Dr. Thomas Baugh
D.O.
Agana Heights, GU
Dr. Anthony Bekkerman
M.D.
Dededo, GU
Dr. Christopher Chisholm
MD
Agana Heights, GU
Dr. Eric Greenfield
D.O
Tamuning, GU
Compare Emergency Medicine Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Guam medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Emergency Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
What is Brian Harris, M.D.'s specialty? ▼
Brian Harris, M.D. specializes in Emergency Medicine Physician and practices in Dededo, Guam. Credentials: M.D..
How much does Brian Harris, M.D. prescribe under Medicare Part D? ▼
In 2023, Brian Harris, M.D. wrote 582 Medicare Part D claims totaling $8K in drug costs for 393 beneficiaries.
Where is Brian Harris, M.D. located? ▼
Brian Harris, M.D. is located at 133 ROUTE 3, Dededo, GU, 96929. Phone: (671) 645-5500.
What is Brian Harris, M.D.'s NPI number? ▼
Brian Harris, M.D.'s National Provider Identifier (NPI) is 1982611950, issued on 08/02/2006.
Does Brian Harris, M.D. prescribe more brand-name or generic drugs? ▼
Brian Harris, M.D.'s prescribing is 7% brand-name and 85% generic drugs by claim count, with $2K in brand drug costs.
Does Brian Harris, M.D. prescribe opioids? ▼
Yes, Brian Harris, M.D. had 12 opioid claims in 2023 with an opioid prescribing rate of 2.1%.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does Brian Harris, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Brian Harris, M.D.'s most frequently prescribed drugs include Azithromycin, Prednisone, Amoxicillin-Clavulanate Potass. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Brian Harris, M.D. accept Medicare? ▼
Brian Harris, M.D. appears in CMS Medicare data with 582 Part D claims and 393 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brian Harris, M.D.'s credentials? ▼
Brian Harris, M.D.'s NPI is 1982611950 with credentials M.D.. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.