NPPES file of Aug 9, 2026

Irene Marks, APN

Women's Health Nurse Practitioner · Chicago, IL

Irene Marks, APN is a women's health nurse practitioner with a practice address in Chicago, Illinois, and NPI 1235251703, issued on Apr 4, 2007. Check the license (Illinois 209004377, 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
1235251703
Name
Irene Marks
Credential
APN
Primary taxonomy
Women's Health Nurse Practitioner 363LW0102X
License number
209004377 IL
Self-reported in NPPES; status is on the state search
Practice location
1901 W Harrison St, Chicago, IL 60612
Phone
(312) 864-0854
Enumerated
Apr 4, 2007
Record last updated
Apr 27, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(312) 864-9580
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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8 nearest women's health nurse practitioner records → All 291 in Illinois → Look up another NPI →

Also registered at 1901 W Harrison St

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

  1. Elias Abate, M.D.Internal Medicine Physician1336712199
  2. Ayesha Abbasi, MDInternal Medicine Physician1376216705
  3. Milagros Abellera, APNNurse Practitioner1528076239
  4. Annette Abraham, MDInfectious Disease Physician1083195093
  5. Fidel Abrego, MDObstetrics & Gynecology Physician1245351824
  6. Bryan Acevedo, MDInternal Medicine Physician1598459612

Verify Irene Marks 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 209004377    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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Irene Marks among 291 women's health nurse practitioner records in Illinois

Irene Marks, APN is one of 291 women's health nurse practitioner records with a practice address in Illinois. 57% 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 2007, is newer than 19% of them.

  • NPI issued2007 · 19% of these records are older, 72% newer
  • In a Medicare fileNo · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · 33% of these records are
  • Record last updated2021 · 47% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LW0102X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Women's Health Nurse Practitioner providers in Illinois

There are 291 women's health nurse practitioner records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 291 in Illinois → Every provider in Chicago → Women's Health Nurse Practitioner nationwide →

The 8 women's health nurse practitioner records with the nearest ZIP codes

  1. Sarah Brennan, WHNPChicago, IL 606121245124361
  2. Mildred Brown, APNChicago, IL 606121285755488
  3. Martha Curiel, DNP, WHNP-BCChicago, IL 606121023448420
  4. Sally Lemke, DNP, WHNP-BCChicago, IL 606121083793616
  5. Karla NacionChicago, IL 606121699858704
  6. Jennifer Rousseau, APRNChicago, IL 606121801422662
  7. Autumn Song, DNPChicago, IL 606121134727811
  8. Erica Wofford, WHNP-BCChicago, IL 606121912721481

Common questions

What is Irene Marks, APN's NPI number?

Irene Marks, APN's National Provider Identifier (NPI) is 1235251703, issued on Apr 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Irene Marks, APN located?

The NPPES record lists a practice address at 1901 W Harrison St, Chicago, IL, 60612. Phone: (312) 864-0854. Providers update this record themselves, so call before visiting.

How can I verify Irene Marks, APN's license?

NPPES lists Illinois license number 209004377, 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.