What is Diana Oakley's NPI number?

Diana Oakley's National Provider Identifier (NPI) is 1033431580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Diana Oakley's specialty?

Diana Oakley is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).

Where is Diana Oakley located?

Diana Oakley's practice location on file with NPPES is 1005 Health Center Dr Ste 104, Mattoon, IL 61938-4637.

What is Diana Oakley's phone number?

The practice phone number listed in the NPPES registry for Diana Oakley is (217) 258-2178.

Does Diana Oakley accept Medicare?

Diana Oakley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Diana Oakley's NPI active?

Yes — Diana Oakley's NPI (1033431580) is active in the NPPES registry as of the last update on 2020-01-16.

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Diana Oakley, APN

NPI 1033431580 · Nurse Practitioner · Mattoon, IL

Diana Oakley, APN is a Nurse Practitioner provider in Mattoon, IL (NPI 1033431580).

Provider details

NPI number: 1033431580
Entity type: Individual
Primary specialty: Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
Credential: APN
Sex: Female
Sole proprietor: No
License: 209008054 (IL)

Practice location

1005 Health Center Dr Ste 104

Mattoon, IL 61938-4637

Phone: (217) 258-2178

Fax: (217) 258-4024

Street-level locationGet directions

More IL providers

Mailing address

1005 Health Center Dr Ste 201

Mattoon, IL 61938-4693

Specialties & taxonomies

Nurse PractitionerPrimary363L00000XLicense 209008054 (IL)
Physician Assistants & Advanced Practice Nursing Providers

Additional practice locations (1)

934 N Route 49 Ste a
Casey, IL 62420-1454
Phone: (217) 932-4061
Fax: (217) 932-5191

Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(89/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
16 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
2 documented practice locations

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2010-02-25
Last updated: 2020-01-16
Certified: 2020-01-16

Frequently asked questions

What is Diana Oakley's NPI number?: Diana Oakley's National Provider Identifier (NPI) is 1033431580, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Diana Oakley's specialty?: Diana Oakley is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
Where is Diana Oakley located?: Diana Oakley's practice location on file with NPPES is 1005 Health Center Dr Ste 104, Mattoon, IL 61938-4637.
What is Diana Oakley's phone number?: The practice phone number listed in the NPPES registry for Diana Oakley is (217) 258-2178.
Does Diana Oakley accept Medicare?: Diana Oakley is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Diana Oakley's NPI active?: Yes — Diana Oakley's NPI (1033431580) is active in the NPPES registry as of the last update on 2020-01-16.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Profile Score

Frequently asked questions