NPI registry status
Active
2026 NPPES data Magnetic Resonance Imaging (MRI) Internal Medicine Physician NPI 1447244942 M.D.
Verify on CMS → Francisco Arraiza, M.D.
Magnetic Resonance Imaging (MRI) Internal Medicine Physician in Arecibo, Puerto Rico.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 21 in Magnetic Resonance Imaging (MRI) Internal Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
162
Medicare Part D claims · 150 beneficiaries · Magnetic Resonance Imaging (MRI) Internal Medicine Physician avg: 2K
Generic prescribing
54%
generic claims · 46% brand-name · higher generic rates reduce patient out-of-pocket costs
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Francisco Arraiza, M.D. filed 162 Medicare Part D claims in 2023 as a Magnetic Resonance Imaging (MRI) Internal Medicine Physician in Arecibo, Puerto Rico, prescribing 54% generic.
- 162
- Part D claims, 2023
- 54%
- generic prescribing
- 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.
Francisco Arraiza, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
162 35th percentile higher than 35% of 1,370,886 prescribers
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 certification likely (heuristic, not verified)
Francisco Arraiza, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Francisco Arraiza, M.D.?
Quality data not reportedPrimary specialty
Magnetic Resonance Imaging (MRI) Internal Medicine Physician
Medicare Part D claims
162 90% vs specialty avg
Specialty distribution in Puerto Rico
How Magnetic Resonance Imaging (MRI) Internal Medicine Physician compares to other specialties among Puerto Rico providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Magnetic Resonance Imaging (MRI) Internal Medicine Physician. Verify directly:
How MIPS and board certification work
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).
Francisco Arraiza, M.D. appears in the CMS NPPES registry as a Magnetic Resonance Imaging (MRI) Internal Medicine Physician provider holding M.D. credentials at CARR # 2 KM 80.1, Arecibo, PR, 00613, with a listed phone of (787) 878-3000. NPI 1447244942 was issued on 09/12/2005.
Medicare Part D records for calendar year 2023 show 162 prescription claims written by this provider, covering 150 Medicare beneficiaries and totaling roughly $2K in drug spend, split 46% brand-name and 54% generic by claim count.
Magnetic Resonance Imaging (MRI) Internal Medicine Physician is a narrow specialty nationwide, with 21 enrolled providers across 11 states and an average of 1,614 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
Provider Details
| NPI | 1447244942 |
|---|---|
| Specialty | Magnetic Resonance Imaging (MRI) Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 09/12/2005 |
Hospital and facility affiliations
Facilities where Francisco Arraiza, 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.
Arraiza Radiology Psc
Arecibo, 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).
Brand vs generic prescribing mix · Above average
Francisco Arraiza, M.D. - brand share 46.0%
Magnetic Resonance Imaging (MRI) Internal Medicine Physician average
46% brand-name claims vs 54% generic, on 162 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.
162
Total Claims
$2K
Total Drug Cost
150
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 162
- Total Day Supply
- 253
- Brand vs Generic
- 46% brand / 54% generic
- Brand Drug Cost
- $713
- Generic Drug Cost
- $826
Patient Demographics
- Average Patient Age
- 69.4 years
- Avg HCC Risk Score
- 2.13
- Gender Split
- 67% female / 33% 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 |
|---|---|
| Methylprednisolone | 162 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
More Magnetic Resonance Imaging (MRI) Internal Medicine Physician in PR →
All providers in Puerto Rico →
Compare specialties →
Magnetic Resonance Imaging (MRI) Internal Medicine Physician Overview
How Francisco Arraiza, M.D. fits within the Magnetic Resonance Imaging (MRI) Internal Medicine Physician landscape nationally.
21
Magnetic Resonance Imaging (MRI) Internal Medicine Physician Providers in US
11
States with Magnetic Resonance Imaging (MRI) Internal Medicine Physician
1,614
Avg Claims per Provider
Francisco Arraiza, M.D.'s 162 claims are below the specialty average of 1,614.
Nearby Magnetic Resonance Imaging (MRI) 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 Arraiza.
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Puerto Rico medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Magnetic Resonance Imaging (MRI) Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
How to Find a Doctor
Step-by-step guide to choosing a provider
Verify Credentials
Check NPI, board certification & license status
Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore Puerto Rico
Frequently Asked Questions
What is Francisco Arraiza, M.D.'s specialty? ▼
Francisco Arraiza, M.D. specializes in Magnetic Resonance Imaging (MRI) Internal Medicine Physician and practices in Arecibo, Puerto Rico. Credentials: M.D..
How much does Francisco Arraiza, M.D. prescribe under Medicare Part D? ▼
In 2023, Francisco Arraiza, M.D. wrote 162 Medicare Part D claims totaling $2K in drug costs for 150 beneficiaries.
Where is Francisco Arraiza, M.D. located? ▼
Francisco Arraiza, M.D. is located at CARR # 2 KM 80.1, Arecibo, PR, 00613. Phone: (787) 878-3000.
What is Francisco Arraiza, M.D.'s NPI number? ▼
Francisco Arraiza, M.D.'s National Provider Identifier (NPI) is 1447244942, issued on 09/12/2005.
Does Francisco Arraiza, M.D. prescribe more brand-name or generic drugs? ▼
Francisco Arraiza, M.D.'s prescribing is 46% brand-name and 54% generic drugs by claim count, with $713 in brand drug costs.
How many Magnetic Resonance Imaging (MRI) Internal Medicine Physician providers are there in the US? ▼
There are 21 Magnetic Resonance Imaging (MRI) Internal Medicine Physician providers across 11 states in the US. The average Magnetic Resonance Imaging (MRI) Internal Medicine Physician provider writes 1,614 Medicare Part D claims per year.
What drugs does Francisco Arraiza, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Francisco Arraiza, M.D.'s most frequently prescribed drugs include Methylprednisolone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Francisco Arraiza, M.D. accept Medicare? ▼
Francisco Arraiza, M.D. appears in CMS Medicare data with 162 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 Francisco Arraiza, M.D.'s credentials? ▼
Francisco Arraiza, M.D.'s NPI is 1447244942 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
View source datasets and methodology notes
- 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
Compiled from official public sources by the PlainDoctor editorial team.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.