NPI registry status
Active
2026 NPPES data Internal Medicine Physician NPI 1235347675 M.D.
Verify on CMS → Loyda Ayala Rosado, M.D.
Internal Medicine Physician in Toa Alta, 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 172,858 in 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
249
Medicare Part D claims · 169 beneficiaries · Internal Medicine Physician avg: 3K
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Loyda Ayala Rosado, M.D. filed 249 Medicare Part D claims in 2023 as a Internal Medicine Physician in Toa Alta, Puerto Rico.
- 249
- 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.
Loyda Ayala Rosado, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
249 49th percentile higher than 49% 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-eligible specialty (heuristic, not verified)
Loyda Ayala Rosado, M.D. 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 Loyda Ayala Rosado, M.D.?
Quality data not reportedPrimary specialty
Internal Medicine Physician
Medicare Part D claims
249 91% vs specialty avg
Specialty distribution in Puerto Rico
How 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 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).
Loyda Ayala Rosado, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at B21 CALLE 10, Toa Alta, PR, 00953, with a listed phone of (787) 892-5811. NPI 1235347675 was issued on 05/18/2007.
Medicare Part D records for calendar year 2023 show 249 prescription claims written by this provider, covering 169 Medicare beneficiaries and totaling roughly $2K in drug spend.
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
Provider Details
| NPI | 1235347675 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Female |
| NPI Issued | 05/18/2007 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
249
Total Claims
$2K
Total Drug Cost
169
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 254
- Total Day Supply
- 2,044
- Generic Drug Cost
- $2K
- Antibiotic Claims
- 77
Patient Demographics
- Average Patient Age
- 72.0 years
- Avg HCC Risk Score
- 1.91
- Gender Split
- 57% female / 43% male
- Age Distribution
- <65: 36, 65-74: 65, 75-84: 46, 85+: 22
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Loyda Ayala Rosado, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Nabumetone
Nabumetone
33 claims
- Cefadroxil
Cefadroxil
24 claims
- Famotidine
Famotidine
22 claims
- Prednisone
Prednisone
19 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
14 claims
| Drug | Claims |
|---|---|
| Nabumetone | 33 |
| Cefadroxil | 24 |
| Famotidine | 22 |
| Prednisone | 19 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 14 |
* 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 Loyda Ayala Rosado, 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
Loyda Ayala Rosado, M.D.'s 249 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 Ayala Rosado.
Dr. Jamil Abouelhossen
MD
Fajardo, PR
Dr. James Abrams
MD
San Juan, PR
Fernando Abreu Gonzalez
San Juan, PR
Dr. Jumana Abuomar
M.D.
Canovanas, PR
Dr. Lourdes Acevedo
M.D.
Aguada, PR
Compare Internal Medicine Physician nationally: see state-by-state distribution →
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 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
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How to Find a Doctor
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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 Loyda Ayala Rosado, M.D.'s specialty? ▼
Loyda Ayala Rosado, M.D. specializes in Internal Medicine Physician and practices in Toa Alta, Puerto Rico. Credentials: M.D..
How much does Loyda Ayala Rosado, M.D. prescribe under Medicare Part D? ▼
In 2023, Loyda Ayala Rosado, M.D. wrote 249 Medicare Part D claims totaling $2K in drug costs for 169 beneficiaries.
Where is Loyda Ayala Rosado, M.D. located? ▼
Loyda Ayala Rosado, M.D. is located at B21 CALLE 10, Toa Alta, PR, 00953. Phone: (787) 892-5811.
What is Loyda Ayala Rosado, M.D.'s NPI number? ▼
Loyda Ayala Rosado, M.D.'s National Provider Identifier (NPI) is 1235347675, issued on 05/18/2007.
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 Loyda Ayala Rosado, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Loyda Ayala Rosado, M.D.'s most frequently prescribed drugs include Nabumetone, Cefadroxil, Famotidine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Loyda Ayala Rosado, M.D. accept Medicare? ▼
Loyda Ayala Rosado, M.D. appears in CMS Medicare data with 249 Part D claims and 169 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Loyda Ayala Rosado, M.D.'s credentials? ▼
Loyda Ayala Rosado, M.D.'s NPI is 1235347675 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.