2026 NPPES data Internal Medicine Physician NPI 1114471489 M.D
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FRAY ARROYO MERCADO, M.D

Internal Medicine Physician in MANATI, 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
111
Medicare Part D claims · 58 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
84%
generic claims · 16% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
83.8451/100
▲ 1 pts above national avg 83.1 · [object Object]
Industry payments
$3.8K
40 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: FRAY ARROYO MERCADO, M.D is a Internal Medicine Physician ([object Object]) practicing in MANATI, Puerto Rico with a Medicare Part D prescribing footprint of 111 claims across 58 beneficiaries — 16% brand-name prescribing . Their CMS MIPS Final Score of 83.8451/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $3.8K across 40 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: FRAY ARROYO MERCADO, M.D reported a CMS MIPS final score of 83.8451 out of 100, above the 83.1 national average, and filed 111 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

FRAY ARROYO MERCADO, M.D practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

FRAY ARROYO MERCADO, M.D at a glance

Near national average

NPI registry status

Active

Issued 08/04/2016

NPI 1114471489

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

111 96% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

MIPS final score

83.8451/100 0.7451000000000079% pts

Above neutral band

vs 83.1 national avg

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

Medicare quality performance — MIPS

FRAY ARROYO MERCADO, M.D's 2023 MIPS final score plotted against the Internal Medicine Physician national average

Near national average
MIPS Final Score
83.8451/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Internal Medicine Physician) — 83.8451/100 vs national avg 83.1

0%100%National avg83%83.8%
MIPS final score (Internal Medicine Physician) — 83.8451/100 vs national avg 83.1

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).

FRAY ARROYO MERCADO, M.D is a Internal Medicine Physician provider practicing in MANATI, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D. NPI: 1114471489. 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.

FRAY ARROYO MERCADO, M.D appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D credentials at 200 CALLE HERNANDEZ CARRION, SUITE 512, MANATI, PR, 00674, with a listed phone of (787) 621-2633. NPI 1114471489 was issued on 08/04/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ARROYO MERCADO 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 111 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $32K in drug spend, split 16% brand-name and 84% generic by claim count. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83.8451/100 for the 2023 performance year (Quality 84.5974, Cost 58.6394), compared with the national average of 83.1.

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

200 CALLE HERNANDEZ CARRION, SUITE 512
MANATI, PR 00674

Provider Details

NPI 1114471489
Specialty Internal Medicine Physician
Credentials M.D
Gender Male
NPI Issued 08/04/2016

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

83.8451
Final Score
Avg: 83.1
84.5974
Quality
58.6394
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where FRAY ARROYO MERCADO, 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.

UNM MEDICAL GROUP INC
ALBUQUERQUE, NM

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 FRAY ARROYO MERCADO, M.D. Source: openpaymentsdata.cms.gov.

Total received

$3.8K

Largest payer

Boston Scientific 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.

Brand vs generic prescribing mix · Typical

FRAY ARROYO MERCADO, M.D — brand share 16.0%
Specialty average (est.)

16% brand-name claims vs 84% generic, on 111 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.

111
Total Claims
$32K
Total Drug Cost
58
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
220
Total Day Supply
6,106
Brand vs Generic
16% brand / 84% generic
Brand Drug Cost
$26K
Generic Drug Cost
$5K
Antibiotic Claims
12

Patient Demographics

Average Patient Age
67.2 years
Avg HCC Risk Score
1.89
Gender Split
64% female / 36% male
Age Distribution
<65: 19, 65-74: 22, 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
Omeprazole
39
Famotidine
12

* 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 FRAY ARROYO MERCADO, 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

FRAY ARROYO MERCADO, M.D's 111 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 ARROYO MERCADO.

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

Frequently Asked Questions

What is FRAY ARROYO MERCADO, M.D's specialty?
FRAY ARROYO MERCADO, M.D specializes in Internal Medicine Physician and practices in MANATI, Puerto Rico. Credentials: M.D.
How much does FRAY ARROYO MERCADO, M.D prescribe under Medicare Part D?
In 2023, FRAY ARROYO MERCADO, M.D wrote 111 Medicare Part D claims totaling $32K in drug costs for 58 beneficiaries.
What is FRAY ARROYO MERCADO, M.D's Medicare quality score?
FRAY ARROYO MERCADO, M.D has a CMS MIPS Final Score of 83.8451/100 (Quality: 84.5974, Cost: 58.6394). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is FRAY ARROYO MERCADO, M.D located?
FRAY ARROYO MERCADO, M.D is located at 200 CALLE HERNANDEZ CARRION, SUITE 512, MANATI, PR, 00674. Phone: (787) 621-2633.
What is FRAY ARROYO MERCADO, M.D's NPI number?
FRAY ARROYO MERCADO, M.D's National Provider Identifier (NPI) is 1114471489, issued on 08/04/2016.
Does FRAY ARROYO MERCADO, M.D prescribe more brand-name or generic drugs?
FRAY ARROYO MERCADO, M.D's prescribing is 16% brand-name and 84% generic drugs by claim count, with $26K in brand drug costs.
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 FRAY ARROYO MERCADO, M.D prescribe most often?
Based on 2023 Medicare Part D data, FRAY ARROYO MERCADO, M.D's most frequently prescribed drugs include Omeprazole, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does FRAY ARROYO MERCADO, M.D accept Medicare?
FRAY ARROYO MERCADO, M.D appears in CMS Medicare data with 111 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify FRAY ARROYO MERCADO, M.D's credentials?
FRAY ARROYO MERCADO, M.D's NPI is 1114471489 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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
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