Maria Fierro, MD
NPI 1427636604 · Student in an Organized Health Care Education/Training Program · San Antonio, TX
Maria Fierro, MD is a Student in an Organized Health Care Education/Training Program provider in San Antonio, TX (NPI 1427636604).
Provider details
- NPI number
- 1427636604
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Female
- 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
5 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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 44 | 19 |
| Gabapentin | 15 | — |
| Amlodipine Besylate | 13 | — |
| Alendronate Sodium | 12 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2021-03-30
- Last updated
- 2021-03-30
- Certified
- 2021-03-30
Frequently asked questions
- What is Maria Fierro's NPI number?
- Maria Fierro's National Provider Identifier (NPI) is 1427636604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Fierro's specialty?
- Maria Fierro 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 Maria Fierro located?
- Maria Fierro's practice location on file with NPPES is 4502 Medical Dr, San Antonio, TX 78229-4402.
- What is Maria Fierro's phone number?
- The practice phone number listed in the NPPES registry for Maria Fierro is (210) 358-3555.
- Is Maria Fierro's NPI active?
- Yes — Maria Fierro's NPI (1427636604) is active in the NPPES registry as of the last update on 2021-03-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.