Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mary Carol Macdonald, RD

Registered Dietitian in Elgin, IL · enumerated 2006.

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

National Provider Identifier

1235195587

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Registry record

Entity type Individual (Type 1)

Name Mary Carol Macdonald

Credential RD

Sex Female

Practice address 77 N Airlite St, Elgin, IL, 60123

Phone (847) 695-3200

Enumeration date Apr 25, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers Primary

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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mary Macdonald?

Mary Macdonald is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Sajid Mehmood Critical Care Medicine (Internal Medicine) Physician · Elgin, IL NPI 1467444950 Ramalingappa Mukunda Internal Medicine Physician · Elgin, IL NPI 1972572675 Lori Mager Registered Dietitian · Elgin, IL NPI 1073579991 Jackie Daily-Caul Registered Dietitian · Elgin, IL NPI 1538125851 Joan Young Certified Registered Nurse Anesthetist · Elgin, IL NPI 1518925544 Janine Goodsite Certified Registered Nurse Anesthetist · Elgin, IL NPI 1093763070 Associated Imaging Specialists Diagnostic Radiology Physician · Elgin, IL NPI 1366493256 J. Onwuta Pain Medicine (Anesthesiology) Physician · Elgin, IL NPI 1861445850

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.