2026 NPPES data Internal Medicine Physician NPI 1487852299 M.D.
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JUAN ARRAUT, M.D.

Internal Medicine Physician in SAN JUAN, 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
7K
Medicare Part D claims · 598 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
83%
generic claims · 17% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$395.77
16 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JUAN ARRAUT, M.D. is a Internal Medicine Physician ([object Object]) practicing in SAN JUAN, Puerto Rico with a Medicare Part D prescribing footprint of 7K claims across 598 beneficiaries — 17% brand-name prescribing . Industry payments of $395.77 across 16 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JUAN ARRAUT, M.D. filed 7,180 Medicare Part D claims in 2023 across SAN JUAN, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JUAN ARRAUT, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

JUAN ARRAUT, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 07/03/2007

NPI 1487852299

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

7,180 164% 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).

JUAN ARRAUT, M.D. is a Internal Medicine Physician provider practicing in SAN JUAN, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1487852299. 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.

JUAN ARRAUT, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at CLINICA LAS AMERICAS, SAN JUAN, PR, 00918, with a listed phone of (787) 751-8739. NPI 1487852299 was issued on 07/03/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARRAUT 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 7,180 prescription claims written by this provider, covering 598 Medicare beneficiaries and totaling roughly $792K in drug spend, split 17% brand-name and 83% generic by claim count, with an opioid prescribing rate of 0.4%. 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

CLINICA LAS AMERICAS
SAN JUAN, PR 00918

Provider Details

NPI 1487852299
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 07/03/2007

Hospital and facility affiliations

Facilities where JUAN ARRAUT, 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.

ARRAUT HEALTHCARE INSTITUTE LLC
SAN JUAN, PR
RECINTO DE CIENCIAS MEDICAS
CAROLINA, PR

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 JUAN ARRAUT, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$396

Largest payer

AstraZeneca Pharmaceuticals LP

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.

Brand vs generic prescribing mix · Typical

JUAN ARRAUT, M.D. — brand share 17.0%
Specialty average (est.)

17% brand-name claims vs 83% generic, on 7,180 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.

7,180
Total Claims
$792K
Total Drug Cost
598
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16,740
Total Day Supply
492,733
Brand vs Generic
17% brand / 83% generic
Brand Drug Cost
$651K
Generic Drug Cost
$140K
Opioid Claims
31 (0.4% rate)
Antibiotic Claims
142

Patient Demographics

Average Patient Age
73.4 years
Avg HCC Risk Score
1.64
Gender Split
60% female / 40% male
Age Distribution
<65: 53, 65-74: 300, 75-84: 182, 85+: 63

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
384
Synthroid
Levothyroxine Sodium
332
Losartan Potassium
295
Rosuvastatin Calcium
289
Simvastatin
241
Metoprolol Succinate
235
Gabapentin
210
Pantoprazole Sodium
206
Famotidine
190
Amlodipine Besylate
173

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Internal Medicine Physician Overview

How JUAN ARRAUT, M.D. 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

JUAN ARRAUT, M.D.'s 7,180 claims are above 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 ARRAUT.

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

Frequently Asked Questions

What is JUAN ARRAUT, M.D.'s specialty?
JUAN ARRAUT, M.D. specializes in Internal Medicine Physician and practices in SAN JUAN, Puerto Rico. Credentials: M.D..
How much does JUAN ARRAUT, M.D. prescribe under Medicare Part D?
In 2023, JUAN ARRAUT, M.D. wrote 7,180 Medicare Part D claims totaling $792K in drug costs for 598 beneficiaries.
Where is JUAN ARRAUT, M.D. located?
JUAN ARRAUT, M.D. is located at CLINICA LAS AMERICAS, SAN JUAN, PR, 00918. Phone: (787) 751-8739.
What is JUAN ARRAUT, M.D.'s NPI number?
JUAN ARRAUT, M.D.'s National Provider Identifier (NPI) is 1487852299, issued on 07/03/2007.
Does JUAN ARRAUT, M.D. prescribe more brand-name or generic drugs?
JUAN ARRAUT, M.D.'s prescribing is 17% brand-name and 83% generic drugs by claim count, with $651K in brand drug costs.
Does JUAN ARRAUT, M.D. prescribe opioids?
Yes, JUAN ARRAUT, M.D. had 31 opioid claims in 2023 with an opioid prescribing rate of 0.4%.
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.
What drugs does JUAN ARRAUT, M.D. prescribe most often?
Based on 2023 Medicare Part D data, JUAN ARRAUT, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Synthroid, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JUAN ARRAUT, M.D. accept Medicare?
JUAN ARRAUT, M.D. appears in CMS Medicare data with 7,180 Part D claims and 598 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JUAN ARRAUT, M.D.'s credentials?
JUAN ARRAUT, M.D.'s NPI is 1487852299 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

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