2026 NPPES data Adult Medicine Physician NPI 1083732085 M.D.
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CANDIDO DIAZ DIAZ, M.D.

Adult Medicine Physician in CAGUAS, 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
3K
Medicare Part D claims · 202 beneficiaries · Adult Medicine Physician avg: 3K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: CANDIDO DIAZ DIAZ, M.D. is a Adult Medicine Physician ([object Object]) practicing in CAGUAS, Puerto Rico with a Medicare Part D prescribing footprint of 3K claims across 202 beneficiaries — 11% brand-name prescribing .

What stands out: CANDIDO DIAZ DIAZ, M.D. filed 2,673 Medicare Part D claims in 2023 across CAGUAS, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

CANDIDO DIAZ DIAZ, 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).

CANDIDO DIAZ DIAZ, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 03/27/2007

NPI 1083732085

Primary specialty

Adult Medicine Physician

Niche

2,481 US NPIs in this specialty

Medicare Part D claims

2,673 5% vs specialty avg

2023 prescription claims

Specialty avg: 2,807

Specialty distribution in Puerto Rico

How Adult Medicine Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Adult Medicine Physician share within Puerto Rico

1. Adult Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Adult Medicine Physician share within Puerto Rico

Specialty board-certification context

Estimated specialty board-certified rate — Adult Medicine Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Adult Medicine Physician ABMS/AOA estimate

Est. board-certified rate (Adult Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Adult 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).

CANDIDO DIAZ DIAZ, M.D. is a Adult Medicine Physician provider practicing in CAGUAS, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1083732085. 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.

CANDIDO DIAZ DIAZ, M.D. appears in the CMS NPPES registry as a Adult Medicine Physician provider holding M.D. credentials at 14 AVE. LUIS MUNOZ MARIN, CAGUAS, PR, 00725, with a listed phone of (787) 743-0338. NPI 1083732085 was issued on 03/27/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DIAZ DIAZ 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 2,673 prescription claims written by this provider, covering 202 Medicare beneficiaries and totaling roughly $138K in drug spend, split 11% brand-name and 89% 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.

Adult Medicine Physician is a narrow specialty nationwide, with 2,481 enrolled providers across 52 states and an average of 2,807 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

14 AVE. LUIS MUNOZ MARIN
CAGUAS, PR 00725

Provider Details

NPI 1083732085
Specialty Adult Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 03/27/2007

Brand vs generic prescribing mix · Typical

CANDIDO DIAZ DIAZ, M.D. — brand share 11.0%
Specialty average (est.)

11% brand-name claims vs 89% generic, on 2,673 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.

2,673
Total Claims
$138K
Total Drug Cost
202
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,944
Total Day Supply
174,470
Brand vs Generic
11% brand / 89% generic
Brand Drug Cost
$91K
Generic Drug Cost
$47K
Antibiotic Claims
46

Patient Demographics

Average Patient Age
76.5 years
Avg HCC Risk Score
1.26
Gender Split
55% female / 45% male
Age Distribution
<65: 11, 65-74: 80, 75-84: 63, 85+: 48

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
229
Metformin Hcl
118
Gabapentin
92
Amlodipine Besylate
87
Metoprolol Succinate
86
Levothyroxine Sodium
83
Omeprazole
78
Simvastatin
72
Temazepam
72
Losartan Potassium
61

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

Adult Medicine Physician Overview

How CANDIDO DIAZ DIAZ, M.D. fits within the Adult Medicine Physician landscape nationally.

2,481
Adult Medicine Physician Providers in US
52
States with Adult Medicine Physician
2,807
Avg Claims per Provider

CANDIDO DIAZ DIAZ, M.D.'s 2,673 claims are below the specialty average of 2,807.

Nearby Adult 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 DIAZ DIAZ.

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

Frequently Asked Questions

What is CANDIDO DIAZ DIAZ, M.D.'s specialty?
CANDIDO DIAZ DIAZ, M.D. specializes in Adult Medicine Physician and practices in CAGUAS, Puerto Rico. Credentials: M.D..
How much does CANDIDO DIAZ DIAZ, M.D. prescribe under Medicare Part D?
In 2023, CANDIDO DIAZ DIAZ, M.D. wrote 2,673 Medicare Part D claims totaling $138K in drug costs for 202 beneficiaries.
Where is CANDIDO DIAZ DIAZ, M.D. located?
CANDIDO DIAZ DIAZ, M.D. is located at 14 AVE. LUIS MUNOZ MARIN, CAGUAS, PR, 00725. Phone: (787) 743-0338.
What is CANDIDO DIAZ DIAZ, M.D.'s NPI number?
CANDIDO DIAZ DIAZ, M.D.'s National Provider Identifier (NPI) is 1083732085, issued on 03/27/2007.
Does CANDIDO DIAZ DIAZ, M.D. prescribe more brand-name or generic drugs?
CANDIDO DIAZ DIAZ, M.D.'s prescribing is 11% brand-name and 89% generic drugs by claim count, with $91K in brand drug costs.
How many Adult Medicine Physician providers are there in the US?
There are 2,481 Adult Medicine Physician providers across 52 states in the US. The average Adult Medicine Physician provider writes 2,807 Medicare Part D claims per year.
What drugs does CANDIDO DIAZ DIAZ, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CANDIDO DIAZ DIAZ, M.D.'s most frequently prescribed drugs include Atorvastatin Calcium, Metformin Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CANDIDO DIAZ DIAZ, M.D. accept Medicare?
CANDIDO DIAZ DIAZ, M.D. appears in CMS Medicare data with 2,673 Part D claims and 202 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CANDIDO DIAZ DIAZ, M.D.'s credentials?
CANDIDO DIAZ DIAZ, M.D.'s NPI is 1083732085 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