2026 NPPES data Emergency Medicine Physician NPI 1538756333 MD
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JAPHET MATOS NIEVES, MD

Emergency Medicine Physician in HORMIGUEROS, Puerto Rico. 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
270
Medicare Part D claims · 159 beneficiaries · Emergency Medicine Physician avg: 352

What the federal data shows

JAPHET MATOS NIEVES, MD filed 270 Medicare Part D claims in 2023 as a Emergency Medicine Physician in HORMIGUEROS, Puerto Rico.

270
Part D claims, 2023

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.

JAPHET MATOS NIEVES, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

270 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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-eligible specialty (heuristic — not verified)

JAPHET MATOS NIEVES, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about JAPHET MATOS NIEVES, MD?

Quality data not reported

NPI registry status

Active

Issued 12/28/2020

NPI 1538756333

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

270 23% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Puerto Rico

How Emergency Medicine Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Emergency Medicine Physician share within Puerto Rico

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

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).

JAPHET MATOS NIEVES, MD is a Emergency Medicine Physician provider practicing in HORMIGUEROS, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1538756333. 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.

JAPHET MATOS NIEVES, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at URB VALLE HERMOSO MARGARITA STE 41, HORMIGUEROS, PR, 00660, with a listed phone of (939) 240-3696. NPI 1538756333 was issued on 12/28/2020. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MATOS NIEVES 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 270 prescription claims written by this provider, covering 159 Medicare beneficiaries and totaling roughly $5K in drug spend. 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

URB VALLE HERMOSO MARGARITA STE 41
HORMIGUEROS, PR 00660

Provider Details

NPI 1538756333
Specialty Emergency Medicine Physician
Credentials MD
Gender Male
NPI Issued 12/28/2020

Medicare Part D Prescribing Data

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

270
Total Claims
$5K
Total Drug Cost
159
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
270
Total Day Supply
1,969
Generic Drug Cost
$2K
Antibiotic Claims
87

Patient Demographics

Average Patient Age
69.7 years
Avg HCC Risk Score
1.89
Gender Split
52% female / 48% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Azithromycin
65
Dexamethasone
53
Prednisone
51
Nabumetone
35
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
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 JAPHET MATOS NIEVES, MD 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

JAPHET MATOS NIEVES, MD's 270 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as MATOS NIEVES.

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

Frequently Asked Questions

What is JAPHET MATOS NIEVES, MD's specialty?
JAPHET MATOS NIEVES, MD specializes in Emergency Medicine Physician and practices in HORMIGUEROS, Puerto Rico. Credentials: MD.
How much does JAPHET MATOS NIEVES, MD prescribe under Medicare Part D?
In 2023, JAPHET MATOS NIEVES, MD wrote 270 Medicare Part D claims totaling $5K in drug costs for 159 beneficiaries.
Where is JAPHET MATOS NIEVES, MD located?
JAPHET MATOS NIEVES, MD is located at URB VALLE HERMOSO MARGARITA STE 41, HORMIGUEROS, PR, 00660. Phone: (939) 240-3696.
What is JAPHET MATOS NIEVES, MD's NPI number?
JAPHET MATOS NIEVES, MD's National Provider Identifier (NPI) is 1538756333, issued on 12/28/2020.
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 JAPHET MATOS NIEVES, MD prescribe most often?
Based on 2023 Medicare Part D data, JAPHET MATOS NIEVES, MD's most frequently prescribed drugs include Azithromycin, Dexamethasone, Prednisone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JAPHET MATOS NIEVES, MD accept Medicare?
JAPHET MATOS NIEVES, MD appears in CMS Medicare data with 270 Part D claims and 159 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JAPHET MATOS NIEVES, MD's credentials?
JAPHET MATOS NIEVES, MD's NPI is 1538756333 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

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