Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Jacqueline Joyce Guay, MD
Pediatrics Physician in Wheaton, IL · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1447313945
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Registry record
Entity type Individual (Type 1)
Name Mrs. Jacqueline Joyce Guay
Credential MD
Sex Female
Practice address 55 East Loop Road, Wheaton, IL, 60187
Phone (630) 690-7300
Enumeration date Dec 18, 2006
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
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.
Frequently asked questions
Where does Jacqueline Guay practice?
The practice location on file with NPPES is in Wheaton, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Jacqueline Guay?
The National Provider Identifier (NPI) for Jacqueline Guay is 1447313945, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.