NPI registry status
Active
2026 NPPES data Emergency Medicine Physician NPI 1336132745 MD
Verify on CMS → Nathaniel Brown, MD
Emergency Medicine Physician in Hanscom Afb, Massachusetts.
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
2K
Medicare Part D claims · 269 beneficiaries · Emergency Medicine Physician avg: 352
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Nathaniel Brown, MD filed 2,371 Medicare Part D claims in 2023 as an Emergency Medicine Physician in Hanscom Afb, Massachusetts.
- 2K
- Part D claims, 2023
- 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.
Nathaniel Brown, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
2,371 Top 14% higher than 86% 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)
Nathaniel Brown, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 3 hospital affiliations - 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 Nathaniel Brown, MD?
Quality data not reportedPrimary specialty
Emergency Medicine Physician
Medicare Part D claims
2,371 7× vs specialty avg
Specialty distribution in Massachusetts
How Emergency Medicine Physician compares to other specialties among Massachusetts 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).
Nathaniel Brown, MD appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding MD credentials at 1609 EGLIN ST, Hanscom Afb, MA, 01731, with a listed phone of (781) 377-4740. NPI 1336132745 was issued on 08/31/2005.
Medicare Part D records for calendar year 2023 show 2,371 prescription claims written by this provider, covering 269 Medicare beneficiaries and totaling roughly $281K in drug spend, with an opioid prescribing rate of 6.7%.
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 | 1336132745 |
|---|---|
| Specialty | Emergency Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/31/2005 |
Hospital and facility affiliations
Facilities where Nathaniel Brown, MD 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.
According to CMS billing records, Nathaniel Brown, MD is affiliated with 3 Medicare-billing facilities.
Hallmark Health Urgent Care Physicians LLC
Medford, MA
Hospitalist Physicians OF Massachusetts PC
Framingham, MA
Tufts Medical Center Community Care Inc
Quincy, MA
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
License & disciplinary context - Massachusetts BORIM 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~38K Massachusetts medical licensees in 2023 - they are NOT specific to Nathaniel Brown, MD. To verify Nathaniel Brown, MD's current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases
BORIM publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
2,371
Total Claims
$281K
Total Drug Cost
269
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 5,000
- Total Day Supply
- 143,944
- Generic Drug Cost
- $54K
- Opioid Claims
- 158 (6.7% rate)
- Antibiotic Claims
- 80
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.33
- Gender Split
- 41% female / 59% male
- Age Distribution
- <65: 46, 65-74: 106, 75-84: 86, 85+: 31
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Nathaniel Brown, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
119 claims
- Rosuvastatin Calcium
Rosuvastatin Calcium
96 claims
- Omeprazole
Omeprazole
81 claims
- Atorvastatin Calcium
Atorvastatin Calcium
80 claims
- Oxycodone Hcl
Oxycodone Hcl
70 claims
- Gabapentin
Gabapentin
63 claims
- Metoprolol Succinate
Metoprolol Succinate
63 claims
- Pantoprazole Sodium
Pantoprazole Sodium
62 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 119 |
| Rosuvastatin Calcium | 96 |
| Omeprazole | 81 |
| Atorvastatin Calcium | 80 |
| Oxycodone Hcl | 70 |
| Gabapentin | 63 |
| Metoprolol Succinate | 63 |
| Pantoprazole Sodium | 62 |
| Pravastatin Sodium | 61 |
| Lorazepam | 60 |
* 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 Nathaniel Brown, MD 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
Nathaniel Brown, MD's 2,371 claims are above the specialty average of 352.
Nearby Emergency Medicine Physician Providers in Massachusetts
Other clinicians with the same primary specialty enrolled in Massachusetts, drawn from the same CMS NPPES roster as Brown.
Dr. Emily Aaronson
M.D.
Boston, MA
Dr. Menahem Abraham
M.D.
Beverly, MA
Dr. Matthew Adamo
DO
Falmouth, MA
Austin Adams
Boston, MA
Dr. Sapana Adhikari
M.D.
Boston, MA
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 Massachusetts 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.
Healthcare Guides
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Medical Specialties Explained
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Frequently Asked Questions
What is Nathaniel Brown, MD's specialty? ▼
Nathaniel Brown, MD specializes in Emergency Medicine Physician and practices in Hanscom Afb, Massachusetts. Credentials: MD.
How much does Nathaniel Brown, MD prescribe under Medicare Part D? ▼
In 2023, Nathaniel Brown, MD wrote 2,371 Medicare Part D claims totaling $281K in drug costs for 269 beneficiaries.
Where is Nathaniel Brown, MD located? ▼
Nathaniel Brown, MD is located at 1609 EGLIN ST, Hanscom Afb, MA, 01731. Phone: (781) 377-4740.
What is Nathaniel Brown, MD's NPI number? ▼
Nathaniel Brown, MD's National Provider Identifier (NPI) is 1336132745, issued on 08/31/2005.
Does Nathaniel Brown, MD prescribe opioids? ▼
Yes, Nathaniel Brown, MD had 158 opioid claims in 2023 with an opioid prescribing rate of 6.7%.
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 Nathaniel Brown, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Nathaniel Brown, MD's most frequently prescribed drugs include Amlodipine Besylate, Rosuvastatin Calcium, Omeprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nathaniel Brown, MD accept Medicare? ▼
Nathaniel Brown, MD appears in CMS Medicare data with 2,371 Part D claims and 269 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nathaniel Brown, MD's credentials? ▼
Nathaniel Brown, MD's NPI is 1336132745 with credentials MD. 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.