William Theodorou, M.D.
NPI 1063686624 · Diagnostic Radiology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Theodorou, M.D. is a Diagnostic Radiology Physician provider in Chicago, IL (NPI 1063686624).
Provider details
- NPI number
- 1063686624
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
1,047 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 | 252 | $8 |
| Ct Scan Head Or Brain Without Contrast70450 | 113 | $37 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 109 | $8 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 77 | $79 |
| Screening Mammography77067 | 68 | $32 |
| Screening 3d Breast Mammography77063 | 67 | $25 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-15
- Last updated
- 2013-02-04
Frequently asked questions
- What is William Theodorou's NPI number?
- William Theodorou's National Provider Identifier (NPI) is 1063686624, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Theodorou's specialty?
- William Theodorou is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Theodorou located?
- William Theodorou's practice location on file with NPPES is 1653 W Congress Pkwy, Chicago, IL 60612-3833.
- What is William Theodorou's phone number?
- The practice phone number listed in the NPPES registry for William Theodorou is (312) 942-5495.
- Does William Theodorou accept Medicare?
- William Theodorou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Theodorou's NPI active?
- Yes — William Theodorou's NPI (1063686624) is active in the NPPES registry as of the last update on 2013-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.