Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Cathy Lynn A Joyce, M.D.

Pediatric Adolescent Medicine Physician in Park Ridge, IL · enumerated 2006 · practices at Center for Childrens Digestive Health.

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

National Provider Identifier

1912932674

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Registry record

Entity type Individual (Type 1)

Name Cathy Lynn A Joyce

Credential M.D.

Sex Female

Practice address 1675 Dempster St, Park Ridge, IL, 60068

Phone (847) 723-9585

Enumeration date Jul 11, 2006

Last updated in NPPES Mar 20, 2025

Taxonomy & licenses

2080A0000X Pediatric Adolescent Medicine Physician Allopathic & Osteopathic Physicians · License 036-076585 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

What specialty is Cathy Lynn Joyce?

Cathy Lynn Joyce is registered in NPPES with the primary taxonomy of Pediatric Adolescent Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-20.