NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alan R. Aronson, MD

Internal Medicine Physician in Vernon Hills, IL · enumerated 2006.

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

National Provider Identifier

1992864946

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Alan R. Aronson
Credential MD
Sex Male
Practice address 225 N Milwaukee Ave, Vernon Hills, IL, 60061
Phone (847) 941-7600
Fax (847) 941-7698
Enumeration date Dec 6, 2006
Last updated in NPPES Jul 2, 2008

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 036-034634 (IL) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
1620385 Other IL BLUE CROSS
036034634 Medicaid IL -
110202658 Other IL RAILROAD MEDICARE

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

How do I verify Alan Aronson's NPI record?
Cross-check NPI 1992864946 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1992864946 active?
Yes, as of the latest NPPES snapshot, NPI 1992864946 is active (record last updated 2008-07-02).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-02.