Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Francisco Jose Diaz-Lozada, M.D.

Internal Medicine Physician in Rio Piedras, PR · enumerated 2006.

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

National Provider Identifier

1457448227

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Francisco Jose Diaz-Lozada

Credential M.D.

Sex Male

Practice address Sequoia St. A3-1, Park Gardens, Rio Piedras, PR, 00926

Phone (787) 399-3620

Fax (787) 756-6497

Enumeration date Oct 5, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 15430 (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

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 Francisco Diaz-Lozada?

Francisco Diaz-Lozada is registered in NPPES with the primary taxonomy of Internal Medicine 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 2007-07-08.