NPI registry status
Active
2026 NPPES data Cardiovascular Disease Physician NPI 1992727713 MD
Verify on CMS → Porfirio Diaz, MD
Cardiovascular Disease Physician in San Juan, 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 24,795 in Cardiovascular Disease 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
5K
Medicare Part D claims · 607 beneficiaries · Cardiovascular Disease Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$322.77
5 payments · CMS Open Payments (Sunshine Act)
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
Porfirio Diaz, MD filed 4,854 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in San Juan, Puerto Rico, prescribing 86% generic.
- 5K
- Part D claims, 2023
- 86%
- generic prescribing
- $322.77
- industry payments (Sunshine Act)
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.
Porfirio Diaz, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
4,854 Top 7% higher than 93% 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)
Porfirio Diaz, 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).
What does the federal data show about Porfirio Diaz, MD?
Quality data not reportedPrimary specialty
Cardiovascular Disease Physician
Medicare Part D claims
4,854 60% vs specialty avg
Specialty distribution in Puerto Rico
How Cardiovascular Disease 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 Cardiovascular Disease 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).
Porfirio Diaz, MD appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding MD credentials at #1021 GENERAL DEL VALLE URB. DELICIAS, San Juan, PR, 00924, with a listed phone of (787) 731-2123. NPI 1992727713 was issued on 07/24/2006.
Medicare Part D records for calendar year 2023 show 4,854 prescription claims written by this provider, covering 607 Medicare beneficiaries and totaling roughly $475K in drug spend, split 14% brand-name and 86% generic by claim count.
Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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 | 1992727713 |
|---|---|
| Specialty | Cardiovascular Disease Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 07/24/2006 |
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 Porfirio Diaz, MD. Source: openpaymentsdata.cms.gov.
Total received
$323
Largest payer
Medtronic, Inc.
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
Porfirio Diaz, MD - brand share 14.0%
Cardiovascular Disease Physician average
14% brand-name claims vs 86% generic, on 4,854 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.
4,854
Total Claims
$475K
Total Drug Cost
607
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 12,026
- Total Day Supply
- 360,064
- Brand vs Generic
- 14% brand / 86% generic
- Brand Drug Cost
- $376K
- Generic Drug Cost
- $99K
Patient Demographics
- Average Patient Age
- 74.5 years
- Avg HCC Risk Score
- 1.54
- Gender Split
- 56% female / 44% male
- Age Distribution
- <65: 48, 65-74: 260, 75-84: 225, 85+: 74
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Porfirio Diaz, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Losartan Potassium
Losartan Potassium
491 claims
- Metoprolol Succinate
Metoprolol Succinate
359 claims
- Amlodipine Besylate
Amlodipine Besylate
305 claims
- Diltiazem 24hr Er …
Diltiazem 24hr Er (Cd)
274 claims
- Atorvastatin Calcium
Atorvastatin Calcium
200 claims
- Doxazosin Mesylate 187
Doxazosin Mesylate
187 claims
- Levothyroxine Sodium 155
Levothyroxine Sodium
155 claims
- Metformin Hcl 139
Metformin Hcl
139 claims
| Drug | Claims |
|---|---|
| Losartan Potassium | 491 |
| Metoprolol Succinate | 359 |
| Amlodipine Besylate | 305 |
| Diltiazem 24hr Er (Cd) Diltiazem Hcl | 274 |
| Atorvastatin Calcium | 200 |
| Doxazosin Mesylate | 187 |
| Levothyroxine Sodium | 155 |
| Metformin Hcl | 139 |
| Metoprolol Tartrate | 135 |
| Chlorthalidone | 132 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Cardiovascular Disease Physician Overview
How Porfirio Diaz, MD fits within the Cardiovascular Disease Physician landscape nationally.
24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider
Porfirio Diaz, MD's 4,854 claims are above the specialty average of 3,033.
Nearby Cardiovascular Disease Physician Providers in Puerto Rico
Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as Diaz.
Dr. Jose Acevedo-Valles
MD
San Juan, PR
Dr. Gerardo Alayon Anta
M.D.
Ponce, PR
Dr. Edwin Alejandro
MD
Bayamon, PR
Dr. Angel Arroyo
MD
Rio Piedras, PR
Dr. Victor Arroyo
MD
Carolina, PR
Compare Cardiovascular Disease 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 Cardiovascular Disease 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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Medical Specialties Explained
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Understanding Medicare Claims Data
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How insurance networks affect your costs
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Frequently Asked Questions
What is Porfirio Diaz, MD's specialty? ▼
Porfirio Diaz, MD specializes in Cardiovascular Disease Physician and practices in San Juan, Puerto Rico. Credentials: MD.
How much does Porfirio Diaz, MD prescribe under Medicare Part D? ▼
In 2023, Porfirio Diaz, MD wrote 4,854 Medicare Part D claims totaling $475K in drug costs for 607 beneficiaries.
Where is Porfirio Diaz, MD located? ▼
Porfirio Diaz, MD is located at #1021 GENERAL DEL VALLE URB. DELICIAS, San Juan, PR, 00924. Phone: (787) 731-2123.
What is Porfirio Diaz, MD's NPI number? ▼
Porfirio Diaz, MD's National Provider Identifier (NPI) is 1992727713, issued on 07/24/2006.
Does Porfirio Diaz, MD prescribe more brand-name or generic drugs? ▼
Porfirio Diaz, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $376K in brand drug costs.
How many Cardiovascular Disease Physician providers are there in the US? ▼
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does Porfirio Diaz, MD prescribe most often? ▼
Based on 2023 Medicare Part D data, Porfirio Diaz, MD's most frequently prescribed drugs include Losartan Potassium, Metoprolol Succinate, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Porfirio Diaz, MD accept Medicare? ▼
Porfirio Diaz, MD appears in CMS Medicare data with 4,854 Part D claims and 607 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Porfirio Diaz, MD's credentials? ▼
Porfirio Diaz, MD's NPI is 1992727713 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
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.