Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Javier E Isla Llamas Sr., MD

General Practice Physician in Jayuya, PR · enumerated 2006.

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

National Provider Identifier

1396795563

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Registry record

Entity type Individual (Type 1)

Name Dr. Javier E Isla Llamas Sr.

Credential MD

Sex Male

Practice address 2 Calle Rosanta Aulet, Jayuya, PR, 00664

Phone (787) 828-0503

Fax (787) 828-0901

Enumeration date May 11, 2006

Last updated in NPPES Sep 11, 2014

Taxonomy & licenses

208D00000X General Practice Physician Allopathic & Osteopathic Physicians · License 13280 (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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Javier Isla Llamas?

Javier Isla Llamas is registered in NPPES with the primary taxonomy of General Practice Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-09-11.