Registry data as of Aug 27, 2026

Isidora Arzu, M.D. PHD

Radiation Oncology Physician · Houston, TX

Isidora Arzu, M.D. PHD is a radiation oncology physician with a practice address in Houston, Texas, and NPI 1275639627, issued on Sep 15, 2006. Check the license (Texas K9996, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1275639627
Name
Isidora Arzu
Credential
M.D. PHD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
K9996 TX
Self-reported in NPPES; status is on the state search
Practice location
1515 Holcombe Blvd, Houston, TX 77030
Phone
(713) 792-6161
Enumerated
Sep 15, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 1515 Holcombe Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Ashley Aaroe, MDStudent in an Organized Health Care Education/Training Program1902295793
  2. Linda Abad, PA-CPhysician Assistant1063928240
  3. Cynthia Abarado, RN, GNPGerontology Nurse Practitioner1851471049
  4. Hussein Abbas, MD, PHDStudent in an Organized Health Care Education/Training Program1609220532
  5. James Abbruzzese, M.D.Medical Oncology Physician1134233224
  6. Karim Abdeldaem, MDEmergency Medicine Physician1558056200

Verify Isidora Arzu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license K9996
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
Open the Texas license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

The practice group's Medicare quality score for 2023: 81.4 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score81.3
  2. Costout of 100 · 30%50.0
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Radiation Oncology Physician providers in Texas

There are 392 radiation oncology physician records in Texas.

Other radiation oncology physician records in Texas

  1. Ramzi Abdulrahman, MDLubbock, TX1790718203
  2. Stephen Acker, M.D.Georgetown, TX1881784221
  3. Mediha Ahmad, M.D.Victoria, TX1124447255
  4. Neelofur Ahmad, M.D.Houston, TX1154320976
  5. Awad Ahmed, MDHarlingen, TX1851702831
  6. Robin Akins, M.D.San Antonio, TX1174691133
  7. Karine Al FeghaliHouston, TX1861999161
  8. Kevin Albuquerque, MDDallas, TX1457338329
  9. Mohammed Aldehaim, MD, FRCPCHouston, TX1306322979
  10. Maureen AliruKingwood, TX1184252553

Common questions

What is Isidora Arzu, M.D. PHD's NPI number?

Isidora Arzu, M.D. PHD's National Provider Identifier (NPI) is 1275639627, issued on Sep 15, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Isidora Arzu, M.D. PHD located?

The NPPES record lists a practice address at 1515 Holcombe Blvd, Houston, TX, 77030. Phone: (713) 792-6161. Providers update this record themselves, so call before visiting.

How can I verify Isidora Arzu, M.D. PHD's license?

NPPES lists Texas license number K9996, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Isidora Arzu, M.D. PHD's Medicare quality score?

The 2023 MIPS final score is 81.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

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 Aug 27, 2026.