Charles Johnson, MD
NPI 1932194263 · Diagnostic Radiology Physician · Austin, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Johnson, MD is a Diagnostic Radiology Physician provider in Austin, TX (NPI 1932194263).
Provider details
- NPI number
- 1932194263
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- K0497 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,575 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) |
|---|---|---|
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 250 | $20 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 249 | $83 |
| Ultrasound Study of One Arm Or Leg Veins With Compression and Maneuvers93971 | 230 | $73 |
| Complete Ultrasound Scan of Abdomen76700 | 197 | $79 |
| Ultrasound of Both Sides of Head and Neck Blood Flow93880 | 173 | $143 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-09-13
- Last updated
- 2015-01-12
Frequently asked questions
- What is Charles Johnson's NPI number?
- Charles Johnson's National Provider Identifier (NPI) is 1932194263, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Johnson's specialty?
- Charles Johnson is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Johnson located?
- Charles Johnson's practice location on file with NPPES is 12554 Riata Vista Cir, Austin, TX 78727-6431.
- What is Charles Johnson's phone number?
- The practice phone number listed in the NPPES registry for Charles Johnson is (512) 795-5100.
- Does Charles Johnson accept Medicare?
- Charles Johnson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Johnson's NPI active?
- Yes — Charles Johnson's NPI (1932194263) is active in the NPPES registry as of the last update on 2015-01-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.