Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Diana L. Oakley, APN
Nurse Practitioner in Mattoon, IL · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1033431580
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Registry record
Entity type Individual (Type 1)
Name Diana L. Oakley
Credential APN
Sex Female
Practice address 1005 Health Center Dr Ste 104, Mattoon, IL, 61938
Phone (217) 258-2178
Fax (217) 258-4024
Enumeration date Feb 25, 2010
Last updated in NPPES Jan 16, 2020
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209008054 (IL) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 209008054 | Other | IL | ILLINOIS DIVISION OF PROFESSIONAL REGULATION |
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 Diana Oakley's NPI record?
Cross-check NPI 1033431580 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1033431580 active?
Yes, as of the latest NPPES snapshot, NPI 1033431580 is active (record last updated 2020-01-16).
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-01-16.