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

Dennis Michael Martinez, D.O.

Pulmonary Disease Physician in Chicago Ridge, IL · enumerated 2015.

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

National Provider Identifier

1366837379

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Registry record

Entity type Individual (Type 1)

Name Dennis Michael Martinez

Credential D.O.

Sex Male

Practice address Chicago Ridge, IL, 60415

Phone (708) 422-0636

Fax (708) 371-9330

Enumeration date Apr 6, 2015

Last updated in NPPES Apr 10, 2026

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

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036146210 (IL) Secondary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 036146210 (IL) Secondary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License 036146210 (IL) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1366837379 active?

Yes, as of the latest NPPES snapshot, NPI 1366837379 is active (record last updated 2026-04-10).

How do I verify Dennis Martinez's NPI record?

Cross-check NPI 1366837379 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Dinas Aleksonis Critical Care Medicine (Internal Medicine) Physician · Chicago Ridge, IL NPI 1255505608 Mohammad Zaheerullah Pulmonary Disease Physician · Chicago Ridge, IL NPI 1295978526 Abdullah Chahin Critical Care Medicine (Internal Medicine) Physician · Chicago Ridge, IL NPI 1972736890 Mohamad Rachid Pulmonary Disease Physician · Chicago Ridge, IL NPI 1093195968 Desirae Demarco Nurse Practitioner · Chicago Ridge, IL NPI 1821628710 Kayla Richert Family Nurse Practitioner · Chicago Ridge, IL NPI 1124893896 James Gordon Nurse Practitioner · Chicago Ridge, IL NPI 1972335024

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-04-10.