2026 NPPES data Emergency Medicine Physician NPI 1316162407 MD, MPH
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MASON BRAGG, MD, MPH

Emergency Medicine Physician in PROVIDENCE, Rhode Island. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
320
Medicare Part D claims · 150 beneficiaries · Emergency Medicine Physician avg: 352
What the federal data reveals: MASON BRAGG, MD, MPH is a Emergency Medicine Physician ([object Object]) practicing in PROVIDENCE, Rhode Island with a Medicare Part D prescribing footprint of 320 claims across 150 beneficiaries .

What the federal data shows

MASON BRAGG, MD, MPH filed 320 Medicare Part D claims in 2023 as a Emergency Medicine Physician in PROVIDENCE, Rhode Island.

320
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.

Board certification likely (heuristic — not verified)

MASON BRAGG, MD, MPH 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).

MASON BRAGG, MD, MPH at a glance

Quality data not reported

NPI registry status

Active

Issued 04/16/2007

NPI 1316162407

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

320 9% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Rhode Island

How Emergency Medicine Physician compares to other specialties among Rhode Island providers

Rhode Island providers

Emergency Medicine Physician share within Rhode Island

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Rhode Island

Specialty board-certification context

Estimated specialty board-certified rate — Emergency Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Emergency Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Emergency Medicine Physician) — ABMS / AOA estimate

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).

MASON BRAGG, MD, MPH is a Emergency Medicine Physician provider practicing in PROVIDENCE, Rhode Island, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD, MPH. NPI: 1316162407. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

MASON BRAGG, MD, MPH appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD, MPH credentials at 593 EDDY ST, PROVIDENCE, RI, 02903, with a listed phone of (401) 444-8450. NPI 1316162407 was issued on 04/16/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BRAGG most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 320 prescription claims written by this provider, covering 150 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 15.3%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 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

593 EDDY ST
PROVIDENCE, RI 02903

Provider Details

NPI 1316162407
Specialty Emergency Medicine Physician
Credentials MD, MPH
Gender Male
NPI Issued 04/16/2007

Hospital and facility affiliations

Facilities where MASON BRAGG, MD, MPH 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.

CAPITAL HOSPITALIST MEDICAL GROUP INC
LOS ANGELES, CA
SANTA ANA PHYSICIANS GROUP PC
INDIO, CA
VEP MLK EMERGENCY MEDICAL GROUP INC
LOS ANGELES, 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).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

320
Total Claims
$3K
Total Drug Cost
150
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
320
Total Day Supply
2,374
Generic Drug Cost
$2K
Opioid Claims
49 (15.3% rate)
Antibiotic Claims
64

Patient Demographics

Average Patient Age
64.9 years
Avg HCC Risk Score
1.86
Gender Split
59% female / 41% male
Age Distribution
<65: 49, 65-74: 74, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Ibuprofen
73
Ondansetron Odt
Ondansetron
61
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
24
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
24
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
18
Cephalexin
16
Methocarbamol
14

* 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 MASON BRAGG, MD, MPH fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

MASON BRAGG, MD, MPH's 320 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Rhode Island

Other clinicians with the same primary specialty enrolled in Rhode Island, drawn from the same CMS NPPES roster as BRAGG.

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MASON BRAGG, MD, MPH's specialty?
MASON BRAGG, MD, MPH specializes in Emergency Medicine Physician and practices in PROVIDENCE, Rhode Island. Credentials: MD, MPH.
How much does MASON BRAGG, MD, MPH prescribe under Medicare Part D?
In 2023, MASON BRAGG, MD, MPH wrote 320 Medicare Part D claims totaling $3K in drug costs for 150 beneficiaries.
Where is MASON BRAGG, MD, MPH located?
MASON BRAGG, MD, MPH is located at 593 EDDY ST, PROVIDENCE, RI, 02903. Phone: (401) 444-8450.
What is MASON BRAGG, MD, MPH's NPI number?
MASON BRAGG, MD, MPH's National Provider Identifier (NPI) is 1316162407, issued on 04/16/2007.
Does MASON BRAGG, MD, MPH prescribe opioids?
Yes, MASON BRAGG, MD, MPH had 49 opioid claims in 2023 with an opioid prescribing rate of 15.3%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 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 MASON BRAGG, MD, MPH prescribe most often?
Based on 2023 Medicare Part D data, MASON BRAGG, MD, MPH's most frequently prescribed drugs include Ibuprofen, Ondansetron Odt, Hydrocodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MASON BRAGG, MD, MPH accept Medicare?
MASON BRAGG, MD, MPH appears in CMS Medicare data with 320 Part D claims and 150 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MASON BRAGG, MD, MPH's credentials?
MASON BRAGG, MD, MPH's NPI is 1316162407 with credentials MD, MPH. 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

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