NPI Portal NPI Lookup & Verification

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

Izayadeth Aguayo Jennings, M.D.

Sleep Medicine (Internal Medicine) Physician in Lisle, IL · enumerated 2016.

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

National Provider Identifier

1205285996

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Registry record

Entity type Individual (Type 1)
Name Izayadeth Aguayo Jennings
Credential M.D.
Sex Female
Practice address Lisle, IL, 60532
Phone (872) 215-0361
Enumeration date Jun 3, 2016
Last updated in NPPES May 21, 2026

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

Taxonomy & licenses

207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License W0424 (TX) Secondary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 46392 (OK) Secondary
207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License 036176313 (IL) Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 58377 (AZ) Secondary
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.

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Frequently asked questions

What is the NPI number for Izayadeth Jennings?
The National Provider Identifier (NPI) for Izayadeth Jennings is 1205285996, a Type 1 (individual) record in the CMS NPPES registry.
Where does Izayadeth Jennings practice?
The practice location on file with NPPES is in Lisle, IL. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-05-21.