Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Edwin Carlson, MD

Specialist in Rockford, IL · enumerated 2006.

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

National Provider Identifier

1790741049

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Edwin Carlson

Credential MD

Sex Male

Practice address 1848 Daimler Rd, Rockford, IL, 61112

Phone (815) 398-9100

Fax (815) 986-6770

Enumeration date Apr 25, 2006

Last updated in NPPES Sep 7, 2010

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 036-073115 (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
K52428	Other	IL	MEDICARE PTAN
36073065	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

Is NPI 1790741049 active?

Yes, as of the latest NPPES snapshot, NPI 1790741049 is active (record last updated 2010-09-07).

How do I verify Mark Carlson's NPI record?

Cross-check NPI 1790741049 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 2010-09-07.