Ioannis Vlahos, M.D.
NPI 1720044001 · Diagnostic Radiology Physician · Houston, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ioannis Vlahos, M.D. is a Diagnostic Radiology Physician provider in Houston, TX (NPI 1720044001).
Provider details
- NPI number
- 1720044001
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 47639 (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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,638 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 441 | $8 |
| X-Ray of Chest, 2 Views71046 | 440 | $10 |
| Ct Scan of Chest With Contrast71260 | 350 | $53 |
| Ct Scan of Chest Without Contrast71250 | 208 | $50 |
| Ct Scan of Chest With Contrast71260 | 62 | $52 |
| X-Ray of Chest, 2 Views71046 | 53 | $10 |
| Ct Scan of Abdomen and Pelvis With Contrast |
Practice location
Mailing address
Additional practice locations (1)
- 560 1st AveNew York, NY 10016-6402Phone: (212) 263-0050
Registry dates
- Enumerated
- 2006-04-25
- Last updated
- 2022-06-17
- Certified
- 2022-06-17
Frequently asked questions
- What is Ioannis Vlahos's NPI number?
- Ioannis Vlahos's National Provider Identifier (NPI) is 1720044001, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ioannis Vlahos's specialty?
- Ioannis Vlahos is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Ioannis Vlahos located?
- Ioannis Vlahos's practice location on file with NPPES is 1515 Holcombe Blvd, Houston, TX 77030-4000.
- What is Ioannis Vlahos's phone number?
- The practice phone number listed in the NPPES registry for Ioannis Vlahos is (713) 792-6161.
- Does Ioannis Vlahos accept Medicare?
- Ioannis Vlahos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ioannis Vlahos's NPI active?
- Yes — Ioannis Vlahos's NPI (1720044001) is active in the NPPES registry as of the last update on 2022-06-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.