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

Dr. Guillermo H Jordan Diaz, MD

Adult Reconstructive Orthopaedic Surgery Physician in Bayamon, PR · enumerated 2006.

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

National Provider Identifier

1679661201

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Registry record

Entity type Individual (Type 1)

Name Dr. Guillermo H Jordan Diaz

Credential MD

Sex Male

Practice address Bayamon, PR, 00961

Phone (787) 780-6223

Fax (787) 269-1015

Enumeration date Oct 10, 2006

Last updated in NPPES Sep 18, 2025

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

Taxonomy & licenses

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4346 (PR) Secondary

207XS0114X Adult Reconstructive Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 4346 (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 Guillermo Jordan Diaz practice?

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

What is the NPI number for Guillermo Jordan Diaz?

The National Provider Identifier (NPI) for Guillermo Jordan Diaz is 1679661201, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-18.