Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Cynthia A Carlson, RD,LDN

Registered Dietitian in Oak Lawn, IL · enumerated 2012.

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

National Provider Identifier

1477818748

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Registry record

Entity type Individual (Type 1)

Name Cynthia A Carlson

Credential RD,LDN

Sex Female

Practice address Oak Lawn, IL, 60453

Phone (773) 425-2706

Fax (773) 296-1527

Enumeration date Jul 11, 2012

Last updated in NPPES Jul 16, 2015

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

132700000X Dietary Manager Dietary & Nutritional Service Providers · License 164000634 (IL) Secondary

133N00000X Nutritionist Dietary & Nutritional Service Providers · License 164000634 (IL) Secondary

133NN1002X Nutrition Education Nutritionist Dietary & Nutritional Service Providers · License 164000634 (IL) Secondary

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 164000634 (IL) Primary

133VN1004X Pediatric Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 164000634 (IL) Secondary

133VN1005X Renal Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 164000634 (IL) Secondary

133VN1006X Metabolic Nutrition Registered Dietitian Dietary & Nutritional Service Providers · License 164000634 (IL) Secondary

RD · Registered Dietitian: A nutrition professional credentialed by the Commission on Dietetic Registration. About the RD credential

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 Cynthia Carlson's NPI record?

Cross-check NPI 1477818748 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477818748 active?

Yes, as of the latest NPPES snapshot, NPI 1477818748 is active (record last updated 2015-07-16).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-07-16.