Natalia Calderon
Natalia Calderon is a provider specialising in Clinical Social Worker in San Juan, PR, registered under NPI 1003245747. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in San Juan, based on OpenStreetMap data collected Sep 13, 2026. No dedicated parking is recorded within walking distance, so allow extra time to find street parking. The nearest transit stop is 0.39 mi away, served by C. Monte Britton & C. Flamboyán. A pharmacy sits 0.39 mi from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.45 mi away.
Getting here and what is nearby
Convenience Texaco 448 ft ~2 min
Gas station Texaco 483 ft ~2 min
Carretera Cupey Bajo, San Juan 00926
Transit C. Campanilla & C. Gallegos 0.29 mi ~6 min
Transit C. Campanilla & C. Canaria 0.31 mi ~7 min
Transit C. Monte Britton & C. Flamboyán 0.39 mi ~8 min
Pharmacy Walgreens 0.39 mi ~8 min
Carretera Coronel Pedro L. Negrón Ramírez (Av. Las Cumbres), San Juan 00926
Restaurant Wendy's 0.39 mi ~8 min
Restaurant Sizzler 0.40 mi ~8 min
Restaurant Church's Chicken 0.40 mi ~9 min
Coffee Café Don Quino 0.45 mi ~9 min
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| 20441 | PR | Clinical Social Worker primary |
This provider holds licence 20441 issued in PR. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
This NPI does not appear in the PECOS Medicare enrolment file. Providers who do not bill Medicare — or who bill only through a group's enrolment — will not appear here. It is not a sign of any problem with the registration.
What Clinical covers
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances. NUCC Health Care Provider Taxonomy, code 1041C0700X
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 | 1003245747 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Nov 4, 2013 |
| Last updated | Nov 4, 2013 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Female |
| Practice address |
CALLE 2 D62 PORTAL DE LOS PINOS San Juan, PR 00926 (787) 587-3240 |
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 | 0 | 0 | 3 | 2 | 4 | 5 | 7 | 4 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 4 | 1 | 7 | 8 |
Sum = 53 · next multiple of 10 = 60 · check digit = 7 · actual last digit = 7
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.