Isidora Arzu, M.D. PHD
NPI 1275639627 · Radiation Oncology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Isidora Arzu, M.D. PHD is a Radiation Oncology Physician provider in Houston, TX (NPI 1275639627).
Provider details
- NPI number
- 1275639627
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D. PHD
- Sex
- Female
- Sole proprietor
- No
- License
- K9996 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,542 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Stereoscopic X-Ray Guidance for Localization of Target Volume for the Delivery of Radiation TherapyG6002 | 351 | $19 |
| Design and Construction of Complex Radiation Treatment Device77334 | 306 | $57 |
| Calculation of Radiation Therapy Dose77300 | 270 | $31 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 138 | $181 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 90 | $42 |
| Complex Radiation Therapy Planning77263 | 60 | $118 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-09-15
- Last updated
- 2020-06-09
- Certified
- 2020-06-09
Frequently asked questions
- What is Isidora Arzu's NPI number?
- Isidora Arzu's National Provider Identifier (NPI) is 1275639627, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Isidora Arzu's specialty?
- Isidora Arzu is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Isidora Arzu located?
- Isidora Arzu's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4000.
- What is Isidora Arzu's phone number?
- The practice phone number listed in the NPPES registry for Isidora Arzu is (713) 792-6161.
- Does Isidora Arzu accept Medicare?
- Isidora Arzu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Isidora Arzu's NPI active?
- Yes — Isidora Arzu's NPI (1275639627) is active in the NPPES registry as of the last update on 2020-06-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.