Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hassan Issa Mahmud, MD

Family Medicine Physician in Carolina, PR · enumerated 2022.

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

National Provider Identifier

1679218069

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Registry record

Entity type Individual (Type 1)

Name Dr. Hassan Issa Mahmud

Credential MD

Sex Male

Practice address Km 8.3 , Calle 3 Avenida 65 De Infanteria, Carolina, PR, 00984

Phone (787) 757-1800

Enumeration date May 1, 2022

Last updated in NPPES Apr 29, 2025

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 23859 (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 Hassan Issa Mahmud practice?

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

What is the NPI number for Hassan Issa Mahmud?

The National Provider Identifier (NPI) for Hassan Issa Mahmud is 1679218069, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-29.