Sergio Vallejo Avila, MD
NPI 1538891585 · Student in an Organized Health Care Education/Training Program · San Antonio, TX
Enrolled with Medicare as Order and Referring Only - Pulmonary Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sergio Vallejo Avila, MD is a Student in an Organized Health Care Education/Training Program provider in San Antonio, TX (NPI 1538891585).
Provider details
- NPI number
- 1538891585
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 29 | 15 |
| Gabapentin | 22 | — |
| Losartan Potassium | 21 | — |
| Levothyroxine Sodium | 18 | — |
| Semaglutidebrand: Ozempic | 14 | — |
| Famotidine | 14 | — |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-06-28
- Last updated
- 2022-06-28
- Certified
- 2022-06-28
Frequently asked questions
- What is Sergio Vallejo Avila's NPI number?
- Sergio Vallejo Avila's National Provider Identifier (NPI) is 1538891585, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sergio Vallejo Avila's specialty?
- Sergio Vallejo Avila is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Sergio Vallejo Avila located?
- Sergio Vallejo Avila's practice location on file with NPPES is 4114 Medical Dr Apt 1217, San Antonio, TX 78229-5633.
- What is Sergio Vallejo Avila's phone number?
- The practice phone number listed in the NPPES registry for Sergio Vallejo Avila is (305) 850-5910.
- Does Sergio Vallejo Avila accept Medicare?
- Sergio Vallejo Avila is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sergio Vallejo Avila's NPI active?
- Yes — Sergio Vallejo Avila's NPI (1538891585) is active in the NPPES registry as of the last update on 2022-06-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.