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

Alfredo Daniel Colon-Marrero

Sleep Medicine (Internal Medicine) Physician in Loma Linda, CA · enumerated 2019 · practices at Faculty Physicians and Surgeons of Llusm.

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

National Provider Identifier

1710539150

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Registry record

Entity type Individual (Type 1)

Name Alfredo Daniel Colon-Marrero

Sex Male

Practice address Loma Linda, CA, 92350

Phone (909) 558-6472

Enumeration date Jul 16, 2019

Last updated in NPPES Jul 24, 2026

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

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 288871 (MA) Secondary

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License A209097 (CA) Primary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2080S0012X Pediatric Sleep Medicine Physician Allopathic & Osteopathic Physicians · License A209097 (CA) 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.

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Frequently asked questions

What is the NPI number for Alfredo Colon-Marrero?

The National Provider Identifier (NPI) for Alfredo Colon-Marrero is 1710539150, a Type 1 (individual) record in the CMS NPPES registry.

Where does Alfredo Colon-Marrero practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-07-24.