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

Dr. Javier Marquez Graciani, MD

Surgery Physician in Mayaguez, PR · enumerated 2008.

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

National Provider Identifier

1518120435

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Registry record

Entity type Individual (Type 1)

Name Dr. Javier Marquez Graciani

Credential MD

Sex Male

Practice address Mayaguez, PR, 00680

Phone (787) 986-7325

Enumeration date Jul 10, 2008

Last updated in NPPES Jul 21, 2022

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

Taxonomy & licenses

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 17272 (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
17272	Medicaid	PR	-

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 Javier Marquez Graciani practice?

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

What is the NPI number for Javier Marquez Graciani?

The National Provider Identifier (NPI) for Javier Marquez Graciani is 1518120435, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-21.