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

Hector M Alonso Sr.

Pharmacist in Mayaguez, PR · enumerated 2007.

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

National Provider Identifier

1649337007

Verified

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Registry record

Entity type Individual (Type 1)

Name Hector M Alonso Sr.

Sex Male

Practice address Mayaguez, PR, 00680

Phone (787) 265-6630

Fax (787) 834-4301

Enumeration date Jan 3, 2007

Last updated in NPPES Apr 30, 2008

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

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 2500 (PR) Primary

332B00000X Durable Medical Equipment & Medical Supplies Suppliers · License 1287160001 (PR) Secondary

3336C0003X Community/Retail Pharmacy Suppliers · License 07-F0696 (PR) Secondary

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 NPI 1649337007 active?

Yes, as of the latest NPPES snapshot, NPI 1649337007 is active (record last updated 2008-04-30).

How do I verify Hector Alonso's NPI record?

Cross-check NPI 1649337007 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-30.