2026 NPPES data Radiation Oncology Physician NPI 1255416301 MD
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WINSTON IMBERT DE ITURRONDO, MD

Radiation Oncology Physician in SAN JUAN, 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
518
Medicare Part D claims · 188 beneficiaries · Radiation Oncology Physician avg: 186
What the federal data reveals: WINSTON IMBERT DE ITURRONDO, MD is a Radiation Oncology Physician ([object Object]) practicing in SAN JUAN, Puerto Rico with a Medicare Part D prescribing footprint of 518 claims across 188 beneficiaries .

What stands out: WINSTON IMBERT DE ITURRONDO, MD filed 518 Medicare Part D claims in 2023 across SAN JUAN, Puerto Rico. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

WINSTON IMBERT DE ITURRONDO, MD 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).

WINSTON IMBERT DE ITURRONDO, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 10/26/2006

NPI 1255416301

Primary specialty

Radiation Oncology Physician

Mid-sized

6,018 US NPIs in this specialty

Medicare Part D claims

518 178% vs specialty avg

2023 prescription claims

Specialty avg: 186

Specialty distribution in Puerto Rico

How Radiation Oncology Physician compares to other specialties among Puerto Rico providers

Puerto Rico providers

Radiation Oncology Physician share within Puerto Rico

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

Specialty board-certification context

Estimated specialty board-certified rate — Radiation Oncology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Radiation Oncology Physician) — ABMS / AOA estimate

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

WINSTON IMBERT DE ITURRONDO, MD is a Radiation Oncology Physician provider practicing in SAN JUAN, Puerto Rico, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1255416301. 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.

WINSTON IMBERT DE ITURRONDO, MD appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding MD credentials at 400 AVE FD ROOSEVELT, SAN JUAN, PR, 00918, with a listed phone of (787) 764-5666. NPI 1255416301 was issued on 10/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what IMBERT DE ITURRONDO 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 518 prescription claims written by this provider, covering 188 Medicare beneficiaries and totaling roughly $7K in drug spend. 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.

Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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

400 AVE FD ROOSEVELT
SAN JUAN, PR 00918

Provider Details

NPI 1255416301
Specialty Radiation Oncology Physician
Credentials MD
Gender Male
NPI Issued 10/26/2006

Hospital and facility affiliations

Facilities where WINSTON IMBERT DE ITURRONDO, MD 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.

TOME AND UBINAS RADIO ONCOLOGY CENTER
SAN JUAN, 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).

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

518
Total Claims
$7K
Total Drug Cost
188
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
601
Total Day Supply
14,001
Generic Drug Cost
$6K
Antibiotic Claims
75

Patient Demographics

Average Patient Age
72.6 years
Avg HCC Risk Score
1.54
Gender Split
8% female / 92% male
Age Distribution
<65: 13, 65-74: 102, 75-84: 62, 85+: 11

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Tamsulosin Hcl
277
Ciprofloxacin Hcl
52
Clonazepam
24
Silodosin
19
Lidocaine-Prilocaine
Lidocaine/Prilocaine
17
Hydrocortisone
14
Levofloxacin
13

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

Radiation Oncology Physician Overview

How WINSTON IMBERT DE ITURRONDO, MD fits within the Radiation Oncology Physician landscape nationally.

6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider

WINSTON IMBERT DE ITURRONDO, MD's 518 claims are above the specialty average of 186.

Nearby Radiation Oncology Physician Providers in Puerto Rico

Other clinicians with the same primary specialty enrolled in Puerto Rico, drawn from the same CMS NPPES roster as IMBERT DE ITURRONDO.

Compare Radiation Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is WINSTON IMBERT DE ITURRONDO, MD's specialty?
WINSTON IMBERT DE ITURRONDO, MD specializes in Radiation Oncology Physician and practices in SAN JUAN, Puerto Rico. Credentials: MD.
How much does WINSTON IMBERT DE ITURRONDO, MD prescribe under Medicare Part D?
In 2023, WINSTON IMBERT DE ITURRONDO, MD wrote 518 Medicare Part D claims totaling $7K in drug costs for 188 beneficiaries.
Where is WINSTON IMBERT DE ITURRONDO, MD located?
WINSTON IMBERT DE ITURRONDO, MD is located at 400 AVE FD ROOSEVELT, SAN JUAN, PR, 00918. Phone: (787) 764-5666.
What is WINSTON IMBERT DE ITURRONDO, MD's NPI number?
WINSTON IMBERT DE ITURRONDO, MD's National Provider Identifier (NPI) is 1255416301, issued on 10/26/2006.
How many Radiation Oncology Physician providers are there in the US?
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
What drugs does WINSTON IMBERT DE ITURRONDO, MD prescribe most often?
Based on 2023 Medicare Part D data, WINSTON IMBERT DE ITURRONDO, MD's most frequently prescribed drugs include Tamsulosin Hcl, Ciprofloxacin Hcl, Clonazepam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does WINSTON IMBERT DE ITURRONDO, MD accept Medicare?
WINSTON IMBERT DE ITURRONDO, MD appears in CMS Medicare data with 518 Part D claims and 188 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify WINSTON IMBERT DE ITURRONDO, MD's credentials?
WINSTON IMBERT DE ITURRONDO, MD's NPI is 1255416301 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

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