Castlling LLC
Castlling LLC is a healthcare organization registered as Emergency Medical Services (Emergency Medicine) Physician in San Juan, PR, holding Type 2 (organization) NPI 1043017163 since 2025. The authorized official on file is Ubaldo Santiago, President.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1043017163 |
|---|---|
| Entity type | Organization (Type 2) |
| Legal business name | Castlling LLC |
| Practice address | 1304 CALLE WILSON APT 8S, San Juan, PR, 00907 |
| Phone | 7877222371 |
| Fax | 7877222374 |
| Enumeration date | 2025-02-26 |
| Last updated in NPPES | 2025-02-26 |
Authorized official
| Name | Ubaldo Santiago |
|---|---|
| Title | President |
| Phone | 7875362033 |
Taxonomy & classification
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 208000000X | Pediatrics Physician | Secondary | — | — |
| 363A00000X | Physician Assistant | Secondary | — | — |
| 363L00000X | Nurse Practitioner | Secondary | — | — |
| 208D00000X | General Practice Physician | Secondary | — | — |
| 208M00000X | Hospitalist Physician | Secondary | — | — |
| 207R00000X | Internal Medicine Physician | Secondary | — | — |
| 207PE0004X | Emergency Medical Services (Emergency Medicine) Physician | Primary | — | — |
Copy-ready billing details
Provider: Castlling LLC NPI: 1043017163 Taxonomy: 207PE0004X (Emergency Medical Services (Emergency Medicine) Physician) Address: 1304 CALLE WILSON APT 8S, San Juan, PR, 00907
Providers at this address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1245044650 | Alquimia Services LLC | Organization | Emergency Medical Services (Emergency Medicine) Physician | San Juan, PR |
Verify this record
Cross-check NPI 1043017163 against the authoritative CMS record: view Castlling LLC on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
What type of organization is Castlling LLC?
What is a Type 2 NPI?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2025-02-26.