Alicia Fernandez-sein, MD
Alicia Fernandez-sein, MD is a Pediatric Critical Care Medicine Physician in San Juan, PR, registered under NPI 1518941970.
Getting there
The practice address on file is 252 CALLE SAN JORGE SAN JORGE MEDICAL BLDG SUITE 406, San Juan, PR 00912. We have not yet mapped what surrounds this office — parking, transit, and nearby pharmacies are added as our data collection reaches each location.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 5399 | PR | Pediatric Critical Care Medicine Physician primary |
This provider holds licence 5399 issued in PR. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Pediatric Medicine
- PAC ID
- 7719871672
- Enrollment ID
- I20040211000596
Medicare enrolment is recorded as approved under the provider type Practitioner - Pediatric Medicine. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
What Pediatric Critical Care Medicine covers
A pediatrician expert in advanced life support for children from the term or near-term neonate to the adolescent. This competence extends to the critical care management of life-threatening organ system failure from any cause in both medical and surgical patients and to the support of vital physiological functions. This specialist may have administrative responsibilities for intensive care units and also facilitates patient care among other specialists. NUCC Health Care Provider Taxonomy, code 2080P0203X
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1518941970 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 30, 2005 |
| Last updated | Jul 13, 2026 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
252 CALLE SAN JORGE SAN JORGE MEDICAL BLDG SUITE 406 San Juan, PR 00912 (787) 726-0210 Fax (787) 728-5136 |
| Mailing address |
202 CALLE PINTOR CAMPECHE BALDRICH San Juan, PR 00918 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 5 | 1 | 8 | 9 | 4 | 1 | 9 | 7 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 5 | 2 | 8 | 9 | 4 | 2 | 9 | 5 |
Sum = 70 · next multiple of 10 = 70 · check digit = 0 · actual last digit = 0
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.