DR. ALICIA E FERNANDEZ-SEIN MD
NPI 1518941970
Pediatrics - Pediatric Critical Care Medicine in San Juan, PR

Q: What is Alicia Fernandez-sein's NPI number?

The NPI number for Alicia Fernandez-sein is 1518941970. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Q: What is Alicia Fernandez-sein's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Active since November 30, 2005PECOS Enrolled

252 CALLE SAN JORGE, SAN JORGE MEDICAL BLDG SUITE 406, SAN JUAN, PR 00912(787) 726-0210(787) 728-5136 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: November 08, 2026.

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About Dr. Alicia E Fernandez-sein Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. ALICIA E FERNANDEZ-SEIN MD (NPI 1518941970) is an individual pediatric critical care medicine provider in San Juan, Puerto Rico, licensed in Puerto Rico (5399) and active in the NPI registry since November 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1518941970

Entity TypeIndividualFemale

Primary Taxonomy2080P0203X

Provider Legal NameDR. ALICIA E FERNANDEZ-SEINCredential: MD

Location Address252 CALLE SAN JORGE, SAN JORGE MEDICAL BLDG SUITE 406San Juan, PR 00912-3310

Mailing Address202 Calle Pintor Campeche, BaldrichSan Juan, PR 00918-4316 · (787) 726-0210 · Fax (787) 728-5136

Phone(787) 726-0210

Fax(787) 728-5136

Sole ProprietorNo

Enumeration DateNovember 30, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1518941970 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Critical Care MedicineAllopathic & Osteopathic Physicians

Taxonomy Code2080P0203X

License✔ Licensed in PR · 5399

Definition

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.

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alicia E Fernandez-sein Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Alicia Fernandez-sein reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Grupo Intensivo Pediatrico De San Juan

Pediatric Critical Care Medicine

252 CALLE SAN JORGE, MEDICAL OFFICE BUILDING SUITE 406
San Juan, PR 00912

Reassigned Medicare billing, Puerto Rico enrollment
10 clinicians in this Medicare group

NPI 1477537892 (787) 726-0210

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

SAN JORGE CHILDREN'S MEDICAL SPECIALTIES,PSC

Clinic/Center (Oncology)

252 CALLE SAN JORGE
SAN JUAN, PR 00912

San Juan Municipio (787) 728-1575

RICARDO LUIS GARCIA-DE JESUS

Pediatrics (Pediatric Critical Care Medicine)

252 CALLE SAN JORGE, SUITE #406
SAN JUAN, PR 00912

San Juan Municipio (787) 726-0210

GLORIA COLON M.D.

Specialist

252 CALLE SAN JORGE, SUITE 504
SANTURCE, PR 00912

San Juan Municipio (787) 728-1575

DR. CLAUDIA MARGARITA OCASIO-RODRIGUEZ M.D.

Pediatrics (Pediatric Critical Care Medicine)

252 CALLE SAN JORGE, MEDICAL OFFICE BUILDING SUITE 406
SAN JUAN, PR 00912

San Juan Municipio (787) 403-8523

DR. MARISEL VAZQUEZ-CORREA M.D.

Pediatrics (Neurodevelopmental Disabilities)

252 CALLE SAN JORGE, SUITE 307
SAN JUAN, PR 00912

San Juan Municipio (787) 728-7775

ALEXANDRA M MONTALVO ACEVEDO MD

Psychiatry & Neurology (Neuromuscular Medicine)

252 CALLE SAN JORGE, SUITE 307 , EDIF MEDICO SAN JORGE
SAN JUAN, PR 00912

San Juan Municipio (787) 233-5933

SPR PEDIATRIC & AYA HEMATOLOGY-ONCOLOGY PARTNERS LLC

Pediatrics (Pediatric Hematology-Oncology)

252 CALLE SAN JORGE, OFICINA 504
SAN JUAN, PR 00912

San Juan Municipio (787) 728-1575

DENISE RIVERA-LUGO MD

Pediatrics (Pediatric Pulmonology)

252 CALLE SAN JORGE, SAN JORGE MEDICAL OFFICE BUILDING SUITE 406
SAN JUAN, PR 00912

San Juan Municipio (787) 726-0990

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alicia Fernandez-sein's NPI number?

The NPI number for Alicia Fernandez-sein is 1518941970. It was assigned to this individual provider in the NPPES registry on November 30, 2005.

Where is Alicia Fernandez-sein located?

Alicia Fernandez-sein practices at 252 Calle San Jorge San Jorge Medical Bldg Suite 406, San Juan, PR 00912. The listed phone number is (787) 726-0210.

What is Alicia Fernandez-sein's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Critical Care Medicine, with taxonomy code 2080P0203X.

Is Alicia Fernandez-sein enrolled in Medicare?

Yes. Alicia Fernandez-sein is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alicia Fernandez-sein's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alicia Fernandez-sein reassigns Medicare benefits to Grupo Intensivo Pediatrico De San Juan (San Juan, PR). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Alicia Fernandez-sein's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Alicia Fernandez-sein was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.