Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Alexandra Isabel Calderon, MD

Pediatrics Physician in Rio Piedras, PR · enumerated 2023.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1700575735

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Registry record

Entity type Individual (Type 1)

Name Alexandra Isabel Calderon

Credential MD

Sex Female

Practice address Rio Piedras, PR, 00935

Phone (787) 474-0333

Enumeration date May 4, 2023

Last updated in NPPES Mar 11, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 16628 (PR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 → Validate an NPI →

Frequently asked questions

Where does Alexandra Calderon practice?

The practice location on file with NPPES is in Rio Piedras, PR. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Alexandra Calderon?

The National Provider Identifier (NPI) for Alexandra Calderon is 1700575735, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Josue Collazo-Lopez Pediatrics Physician · Rio Piedras, PR NPI 1396435053

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-03-11.