DIANA DIAKAKIS FNP-BC
NPI 1225465487
Nurse Practitioner - Family in Evanston, IL
About Diana Diakakis Fnp-bc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA DIAKAKIS FNP-BC (NPI 1225465487) is an individual family provider in Evanston, Illinois, licensed in Illinois (209010787) and active in the NPI registry since October 2013. She is enrolled in Medicare PECOS and is a graduate of Other (2013).
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Diana Diakakis Fnp-bc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Diana Diakakis reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Mokena, IL 60448
- Reassigned Medicare billing, Illinois enrollment
- 223 clinicians in this Medicare group
Mokena, IL 60448
- Reassigned Medicare billing, Illinois enrollment
- 115 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60202 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Diana Diakakis's NPI number?
The NPI number for Diana Diakakis is 1225465487. It was assigned to this individual provider in the NPPES registry on October 2, 2013.
Where is Diana Diakakis located?
Diana Diakakis practices at 2209 Howard St, Evanston, IL 60202. The listed phone number is (847) 733-1144.
What is Diana Diakakis's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Diana Diakakis enrolled in Medicare?
Yes. Diana Diakakis is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Diana Diakakis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Diana Diakakis reassigns Medicare benefits to 2 organizations: Minuteclinic Diagnostic Of Illinois PLLC (Mokena, IL) and Minuteclinic Primary Care Illinois PLLC (Mokena, IL). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Diana Diakakis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Diana Diakakis accept?
Health plans from Ambetter Health and Ambetter Health of Delaware list Diana Diakakis as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Diana Diakakis was last updated on December 6, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Diana Diakakis, FNP-BC · NPI 1225465487
Family physician in Evanston, Illinois. Individual provider, active in the CMS NPPES registry since October 2, 2013.
## Identity
- **NPI:** 1225465487 (Entity type: Individual)
- **Enumerated:** October 2, 2013
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 209010787 (Illinois)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2209 HOWARD ST, Evanston, IL 60202-3636
- **Phone:** (847) 733-1144
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Minuteclinic Diagnostic Of Illinois PLLC (NPI 1356485809, Mokena, IL); Minuteclinic Primary Care Illinois PLLC (NPI 1528875564, Mokena, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2013
## Record status
- **NPPES last updated:** December 6, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1225465487) · Data from the CMS NPPES public registry.