NPPES file of Aug 9, 2026

Megan Olszak, APRN, FNP-BC, FNP-C

Nurse Practitioner · Chicago, IL

Megan Olszak, APRN, FNP-BC, FNP-C is a nurse practitioner with a practice address in Chicago, Illinois, and NPI 1326933847, issued on Jun 12, 2025. Check the license (Illinois 209.033215, as entered in NPPES) with the Illinois board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1326933847
Name
Megan Olszak
Credential
APRN, FNP-BC, FNP-C
Primary taxonomy
Nurse Practitioner 363L00000X
License number
209.033215 IL
Self-reported in NPPES; status is on the state search
Practice location
3000 N Halsted St Ste 401, Chicago, IL 60657
Phone
(773) 296-3636
Enumerated
Jun 12, 2025
Record last updated
Sep 12, 2025
Fax
(773) 296-3639
Medicare enrollment
Enrolled (PECOS I20260116002277); may accept 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 3000 N Halsted St Ste 401

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

  1. Tyson Stock, D.O.Family Medicine Physician1114366788
  2. Barry Summers, M.D.Specialist1326117383

Verify Megan Olszak 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 209.033215    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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Megan Olszak among 4,892 nurse practitioner records in Illinois

Megan Olszak, APRN, FNP-BC, FNP-C 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 not. Its NPI, issued in 2025, is newer than 92% of them.

  • NPI issued2025 · 92% of these records are older, 2% newer
  • In a Medicare fileNo · 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 updated2025 · 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. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

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 Megan Olszak, APRN, FNP-BC, FNP-C's NPI number?

Megan Olszak, APRN, FNP-BC, FNP-C's National Provider Identifier (NPI) is 1326933847, issued on Jun 12, 2025. An NPI identifies a provider in billing; it is not a license.

Where is Megan Olszak, APRN, FNP-BC, FNP-C located?

The NPPES record lists a practice address at 3000 N Halsted St Ste 401, Chicago, IL, 60657. Phone: (773) 296-3636. Providers update this record themselves, so call before visiting.

How can I verify Megan Olszak, APRN, FNP-BC, FNP-C's license?

NPPES lists Illinois license number 209.033215, 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. 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.