Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Eileen I Pacheco - Hernandez, MD

Hematology & Oncology Physician in Rio Piedras, PR · enumerated 2006.

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

National Provider Identifier

1831107317

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Registry record

Entity type Individual (Type 1)

Name Dr. Eileen I Pacheco - Hernandez

Credential MD

Sex Female

Practice address Hematologia Y Oncologia Rcm, Sotano Hospital Universitario Centro Medico, Rio Piedras, PR, 00935

Phone (787) 754-0101

Fax (787) 756-5866

Enumeration date Aug 3, 2006

Last updated in NPPES Nov 8, 2011

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 6439 (PR) Primary

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

Other identifiers

Identifier	Type	State	Issuer
12918	Other	PR	SSS-MED. QUIMIO
28159	Other	PR	SSS-ADMIN. Y VISITAS

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 Eileen Pacheco - Hernandez?

Eileen Pacheco - Hernandez is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-08.