NPPES file of Aug 9, 2026

Diana Diakakis, FNP-BC

Family Nurse Practitioner · Evanston, IL

Diana Diakakis, FNP-BC is a family nurse practitioner with a practice address in Evanston, Illinois, and NPI 1225465487, issued on Oct 2, 2013. Check the license (Illinois 209010787, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1225465487
Name
Diana Diakakis
Credential
FNP-BC
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
209010787 IL
Self-reported in NPPES; status is on the state search
Practice location
2209 Howard St, Evanston, IL 60202
Phone
(847) 733-1144
Enumerated
Oct 2, 2013
Record last updated
Dec 6, 2013 (not updated in 13 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20131115001374); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 2209 Howard St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Irene CheungFamily Nurse Practitioner1336508753
  2. Ellen Edelman, RPPharmacist1356636922
  3. Fatima El Hawary, FNPFamily Nurse Practitioner1417478553
  4. Cheryl Jezwinski, PHARMDPharmacist1669767448
  5. John Kirklys, PHARM.D.Pharmacist1619398641
  6. Jennifer Lasch, RN APNNurse Practitioner1154621662

Verify Diana Diakakis in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Illinois board licenses this profession
    Search for license 209010787    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Illinois license search

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98% fewer Medicare Part D claims than the average family nurse practitioner in 2024

32 Medicare Part D claims for 20 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Diana Diakakis32
  2. Specialty average1,305

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $61.12

1 payment: food and beverage; the largest payer was Pfizer Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Diana Diakakis$61.12
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Minuteclinic Diagnostic OF Illinois PLLCChicago, IL
  2. Minuteclinic Primary Care Illinois PLLCChicago, IL

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Family Nurse Practitioner providers in Illinois

There are 7,639 family nurse practitioner records in Illinois.

All 7,639 in Illinois → Every provider in Evanston →

Other family nurse practitioner records in Illinois

  1. Crystal Aandahl, FNPNorth Chicago, IL1316497068
  2. Deborah Aaron, FNPChicago, IL1114024916
  3. Roseviminda Abano, CNPGurnee, IL1215318555
  4. Theresa AbbaduskyPekin, IL1265892046
  5. Nadia Abbasi-Kling, FNP-BCChicago, IL1033767736
  6. Manar Abdalla, FNPChicago, IL1700632411
  7. Mahubah Abdallah, FNP-CRochelle, IL1841752284
  8. Rana Abdallah, DNP, APRN, FNP-CLake Villa, IL1851261887
  9. Servet Abdelhafez, APRNBrookfield, IL1790505048
  10. Nadia Abdessalam, FNP-BCOak Lawn, IL1356888283

Common questions

What is Diana Diakakis, FNP-BC's NPI number?

Diana Diakakis, FNP-BC's National Provider Identifier (NPI) is 1225465487, issued on Oct 2, 2013. An NPI identifies a provider in billing; it is not a license.

Where is Diana Diakakis, FNP-BC located?

The NPPES record lists a practice address at 2209 Howard St, Evanston, IL, 60202. Phone: (847) 733-1144. Providers update this record themselves, so call before visiting.

How can I verify Diana Diakakis, FNP-BC's license?

NPPES lists Illinois license number 209010787, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Diana Diakakis, FNP-BC prescribe under Medicare Part D?

In 2024, Diana Diakakis, FNP-BC had 32 Medicare Part D claims for 20 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.