Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Margaret Chao, PA
Physician Assistant in Berwyn, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780889238
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Registry record
Entity type Individual (Type 1)
Name Margaret Chao
Credential PA
Sex Female
Practice address 3231 Euclid Ave, Ste. 403, Berwyn, IL, 60402
Phone (708) 783-0700
Enumeration date Jun 15, 2007
Last updated in NPPES Oct 15, 2007
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 085002922 (IL) Primary
PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program.
About the PA credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 085002922 | Other | IL | STATE LICENSE |
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
How do I verify Margaret Chao's NPI record?
Cross-check NPI 1780889238 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1780889238 active?
Yes, as of the latest NPPES snapshot, NPI 1780889238 is active (record last updated 2007-10-15).
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-15.