2026 NPPES data Internal Medicine Physician NPI 1003401191 MD
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REY APONTE-RIVERA, MD

Internal Medicine Physician in MAYAGUEZ, 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
15
Medicare Part D claims · Internal Medicine Physician avg: 3K
Industry payments
$360.91
13 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: REY APONTE-RIVERA, MD is a Internal Medicine Physician ([object Object]) practicing in MAYAGUEZ, Puerto Rico with a Medicare Part D prescribing footprint of 15 claims . Industry payments of $360.91 across 13 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: REY APONTE-RIVERA, MD filed 15 Medicare Part D claims in 2023 across MAYAGUEZ, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

REY APONTE-RIVERA, 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).

REY APONTE-RIVERA, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 03/02/2021

NPI 1003401191

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

15 99% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Puerto Rico

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

Puerto Rico providers

Internal Medicine Physician share within Puerto Rico

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

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal 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).

REY APONTE-RIVERA, MD is a Internal Medicine Physician provider practicing in MAYAGUEZ, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1003401191. 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.

REY APONTE-RIVERA, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at AVE. HOSTOS #410 CARRETERA #2, MAYAGUEZ, PR, 00680, with a listed phone of (787) 652-9200. NPI 1003401191 was issued on 03/02/2021. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what APONTE-RIVERA 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 15 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $162 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

AVE. HOSTOS #410 CARRETERA #2
MAYAGUEZ, PR 00680

Provider Details

NPI 1003401191
Specialty Internal Medicine Physician
Credentials MD
Gender Male
NPI Issued 03/02/2021

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for REY APONTE-RIVERA, MD. Source: openpaymentsdata.cms.gov.

Total received

$361

Largest payer

Novartis Pharmaceuticals Corporation

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

Medicare Part D Prescribing Data

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

15
Total Claims
$162
Total Drug Cost
N/A
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
15
Total Day Supply
373
Generic Drug Cost
$153

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
4.21

Internal Medicine Physician Overview

How REY APONTE-RIVERA, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

REY APONTE-RIVERA, MD's 15 claims are below the specialty average of 2,716.

Nearby Internal 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 APONTE-RIVERA.

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

Frequently Asked Questions

What is REY APONTE-RIVERA, MD's specialty?
REY APONTE-RIVERA, MD specializes in Internal Medicine Physician and practices in MAYAGUEZ, Puerto Rico. Credentials: MD.
How much does REY APONTE-RIVERA, MD prescribe under Medicare Part D?
In 2023, REY APONTE-RIVERA, MD wrote 15 Medicare Part D claims totaling $162 in drug costs for N/A beneficiaries.
Where is REY APONTE-RIVERA, MD located?
REY APONTE-RIVERA, MD is located at AVE. HOSTOS #410 CARRETERA #2, MAYAGUEZ, PR, 00680. Phone: (787) 652-9200.
What is REY APONTE-RIVERA, MD's NPI number?
REY APONTE-RIVERA, MD's National Provider Identifier (NPI) is 1003401191, issued on 03/02/2021.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
Does REY APONTE-RIVERA, MD accept Medicare?
REY APONTE-RIVERA, MD appears in CMS Medicare data with 15 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify REY APONTE-RIVERA, MD's credentials?
REY APONTE-RIVERA, MD's NPI is 1003401191 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