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

Lorenzo Joaquin Diaz, DO

Physical Medicine & Rehabilitation Physician in Maywood, IL · enumerated 2020.

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

National Provider Identifier

1194344663

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Registry record

Entity type Individual (Type 1)
Name Lorenzo Joaquin Diaz
Credential DO
Sex Male
Practice address Maywood, IL, 60153
Phone (872) 231-3162
Enumeration date Apr 14, 2020
Last updated in NPPES Oct 7, 2025

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

Taxonomy & licenses

208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License 036176144 (IL) Primary
208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians · License OS19778 (FL) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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.

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Frequently asked questions

Where does Lorenzo Diaz practice?
The practice location on file with NPPES is in Maywood, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Lorenzo Diaz?
The National Provider Identifier (NPI) for Lorenzo Diaz is 1194344663, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-10-07.