Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas S Michelson, MD

Ophthalmology Physician in Wheaton, IL · enumerated 2005.

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

National Provider Identifier

1992794838

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Dr. Thomas S Michelson

Credential MD

Sex Male

Practice address 2015 N Main St, Wheaton, IL, 60187

Phone (630) 668-8250

Fax (630) 668-8916

Enumeration date Oct 13, 2005

Last updated in NPPES Aug 26, 2024

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 036-084317 (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
180014830	Other	IL	RR MEDICARE
036084317	Medicaid	IL	-

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 Thomas Michelson's NPI record?

Cross-check NPI 1992794838 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1992794838 active?

Yes, as of the latest NPPES snapshot, NPI 1992794838 is active (record last updated 2024-08-26).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-26.