NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Caroline Elizabeth Olvera, M.D.

Neurology Physician in Chicago, IL · enumerated 2016.

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

National Provider Identifier

1639531817

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Registry record

Entity type Individual (Type 1)
Name Caroline Elizabeth Olvera
Credential M.D.
Sex Female
Practice address 1725 W Harrison St Ste 755, Chicago, IL, 60612
Phone (888) 352-7874
Enumeration date Mar 25, 2016
Last updated in NPPES Jul 29, 2020

Taxonomy & licenses

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 036.152714 (IL) Primary
390200000X Student in an Organized Health Care Education/Training Program Student, Health Care 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1639531817 active?
Yes, as of the latest NPPES snapshot, NPI 1639531817 is active (record last updated 2020-07-29).
How do I verify Caroline Olvera's NPI record?
Cross-check NPI 1639531817 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-07-29.