NPPES file of Aug 9, 2026

Neil Patrick Brennan, APRN

Nurse Practitioner · Chicago, IL

Neil Patrick Brennan, APRN is a nurse practitioner with a practice address in Chicago, Illinois, and NPI 1548123995, issued on Dec 3, 2025. Check the license (Illinois 209.032809, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548123995
Name
Neil Patrick Brennan
Credential
APRN
Primary taxonomy
Nurse Practitioner 363L00000X
License number
209.032809 IL
Self-reported in NPPES; status is on the state search
Practice location
3134 N Clark St, Chicago, IL 60657
Phone
(773) 880-9722
Enumerated
Dec 3, 2025
Record last updated
Apr 30, 2026
Medicare enrollment
Enrolled (PECOS I20260211001095); 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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8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →

Also registered at 3134 N Clark St

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

  1. Lauren Abplanalp, D.O.Pulmonary Disease Physician1346604642
  2. Ahmed Abuhasna, DOInternal Medicine Physician1841985025
  3. Sara AbuzahraObstetrics & Gynecology Physician1952105066
  4. Fabiola Adkisson, MDInternal Medicine Physician1184474843
  5. Muhammad Ahmad, M.D.Internal Medicine Physician1407422629
  6. Reda Ahmed, MDInternal Medicine Physician1790618064

Verify Neil Patrick Brennan 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 209.032809    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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Advocate Health And Hospitals CorporationChicago, IL

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

Neil Patrick Brennan among 4,892 nurse practitioner records in Illinois

Neil Patrick Brennan, APRN is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2025, is newer than 92% of them.

  • NPI issued2025 · 92% of these records are older, 2% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2025 · median 2018 among the 3,389 with a school on file
  • Record last updated2026 · 36% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

952 nurse practitioner records list a practice address in Chicago

They are 952 of the 63,379 NPPES records with a practice address in Chicago, and 4,892 nurse practitioner records in Illinois.

All 4,892 in Illinois → Every provider in Chicago → Nurse Practitioner nationwide →

The 8 nurse practitioner records with the nearest ZIP codes

  1. Mary Atha, NPChicago, IL 606571235229469
  2. Alicia Belcher, APRNChicago, IL 606571699134247
  3. Amanda Carlo, NPChicago, IL 606571376947929
  4. Elyse Clair, CNPChicago, IL 606571790719920
  5. Sarah DobbinsChicago, IL 606571295127470
  6. Bethany Duyser, RN, APNChicago, IL 606571265772743
  7. Ann Harvey, APN, CNPChicago, IL 606571013121177
  8. Linda Masini, APNChicago, IL 606571114170545

Common questions

What is Neil Patrick Brennan, APRN's NPI number?

Neil Patrick Brennan, APRN's National Provider Identifier (NPI) is 1548123995, issued on Dec 3, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Neil Patrick Brennan, APRN located?

The NPPES record lists a practice address at 3134 N Clark St, Chicago, IL, 60657. Phone: (773) 880-9722. Providers update this record themselves, so call before visiting.

How can I verify Neil Patrick Brennan, APRN's license?

NPPES lists Illinois license number 209.032809, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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.