Guillermo De Leon, MD
NPI 1427001320 · Diagnostic Radiology Physician · Dallas, TX
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Guillermo De Leon, MD is a Diagnostic Radiology Physician provider in Dallas, TX (NPI 1427001320).
Provider details
- NPI number
- 1427001320
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- L0124 (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
5,119 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) |
|---|---|---|
| Screening 3d Breast Mammography77063 | 1,906 | $41 |
| Screening Mammography77067 | 1,902 | $99 |
| Dxa Bone Density Measurement of Hip, Pelvis, Spine77080 | 802 | $36 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 173 | $43 |
| Diagnostic Mammography of 1 Breast77065 | 105 | $110 |
| Limited Ultrasound Scan of 1 Breast76642 | 91 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2012-02-15
Frequently asked questions
- What is Guillermo De Leon's NPI number?
- Guillermo De Leon's National Provider Identifier (NPI) is 1427001320, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Guillermo De Leon's specialty?
- Guillermo De Leon is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Guillermo De Leon located?
- Guillermo De Leon's practice location on file with NPPES is 3500 Gaston Avenue, Dallas, TX 75246.
- What is Guillermo De Leon's phone number?
- The practice phone number listed in the NPPES registry for Guillermo De Leon is (214) 826-8822.
- Does Guillermo De Leon accept Medicare?
- Guillermo De Leon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Guillermo De Leon's NPI active?
- Yes — Guillermo De Leon's NPI (1427001320) is active in the NPPES registry as of the last update on 2012-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.