Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Marvin A Rossi, MD PHD

Neurology Physician in Chicago, IL · enumerated 2005.

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

National Provider Identifier

1275529091

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Registry record

Entity type Individual (Type 1)

Name Dr. Marvin A Rossi

Credential MD PHD

Sex Male

Practice address 1725 W Harrison St, # 1106 University Neurologists Rumc, Chicago, IL, 60612

Phone (312) 942-4500

Fax (312) 942-2380

Enumeration date Sep 27, 2005

Last updated in NPPES Mar 7, 2023

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036106025 (IL) Primary

Other identifiers

Identifier	Type	State	Issuer
036106025	Medicaid	IL	-
336068434	Other	IL	CT SUBSTANCE IL DEPT OF P

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 1275529091 active?

Yes, as of the latest NPPES snapshot, NPI 1275529091 is active (record last updated 2023-03-07).

How do I verify Marvin Rossi's NPI record?

Cross-check NPI 1275529091 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.