NPPES file of Aug 9, 2026

Melissa Nancy Day

Family Nurse Practitioner · Chicago, IL

Melissa Nancy Day is a family nurse practitioner with a practice address in Chicago, Illinois, and NPI 1740830777, issued on Sep 11, 2019. Check the license (Illinois 209019257, 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
1740830777
Name
Melissa Nancy Day
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
209019257 IL
Self-reported in NPPES; status is on the state search
Practice location
2331 W Chicago Ave, Chicago, IL 60622
Phone
(773) 772-7858
Enumerated
Sep 11, 2019
Record last updated
Aug 11, 2020 (not updated in 6 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 2331 W Chicago Ave

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

  1. Marie DorseyFamily Nurse Practitioner1770068454
  2. Saad Khan, NPFamily Nurse Practitioner1831541796
  3. Lloyd Mercado, ANPNurse Practitioner1457749079
  4. Melissa MuradFamily Nurse Practitioner1467972802
  5. Zimuzo Nelson, FNP-CFamily Nurse Practitioner1356817175
  6. Joseph OlalusiFamily Nurse Practitioner1134633902

Verify Melissa Nancy Day 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 209019257    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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75% fewer Medicare Part D claims than the average family nurse practitioner in 2024

328 Medicare Part D claims for 46 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.

  1. Melissa Day328
  2. Specialty average1,305

Most prescribed

  1. Bumetanide60 claims
  2. Eliquis22 claims
  3. Mirtazapine17 claims
  4. Toujeo Solostar14 claims
  5. Atorvastatin Calcium12 claims
  6. Lorazepam11 claims

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: $14.90

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. Melissa Day$14.90
  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.

1,567 family nurse practitioner records list a practice address in Chicago

They are 1,567 of the 63,379 NPPES records with a practice address in Chicago, and 7,639 family nurse practitioner records in Illinois.

All 1,567 in Chicago → All 7,639 in Illinois → Every provider in Chicago →

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 Melissa Nancy Day's NPI number?

Melissa Nancy Day's National Provider Identifier (NPI) is 1740830777, issued on Sep 11, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Melissa Nancy Day located?

The NPPES record lists a practice address at 2331 W Chicago Ave, Chicago, IL, 60622. Phone: (773) 772-7858. Providers update this record themselves, so call before visiting.

How can I verify Melissa Nancy Day's license?

NPPES lists Illinois license number 209019257, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Melissa Nancy Day prescribe under Medicare Part D?

In 2024, Melissa Nancy Day had 328 Medicare Part D claims for 46 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.