Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Troy R. Karlsson, M.D.

Orthopaedic Surgery Physician in Naperville, IL · enumerated 2005 · practices at Dupage Medical Group Ltd.

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

National Provider Identifier

1114913910

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Troy R. Karlsson

Credential M.D.

Sex Male

Practice address 1259 Rickert Dr Ste 101, Naperville, IL, 60540

Phone (630) 790-1872

Enumeration date Sep 27, 2005

Last updated in NPPES Aug 9, 2023

Taxonomy & licenses

207XX0005X Sports Medicine (Orthopaedic Surgery) Physician Allopathic & Osteopathic Physicians · License 036085872 (IL) Secondary

207X00000X Orthopaedic Surgery Physician Allopathic & Osteopathic Physicians · License 036085872 (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
036085872	Medicaid	IL	-
200013547	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 Troy Karlsson's NPI record?

Cross-check NPI 1114913910 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1114913910 active?

Yes, as of the latest NPPES snapshot, NPI 1114913910 is active (record last updated 2023-08-09).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-09.