NPPES file of Aug 9, 2026

Jennifer Sostak, AGACNP

Acute Care Nurse Practitioner · Chicago, IL

Jennifer Sostak, AGACNP is an acute care nurse practitioner with a practice address in Chicago, Illinois, and NPI 1174912505, issued on Jan 22, 2015. Check the license (Illinois 209011729, 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
1174912505
Name
Jennifer Sostak
Credential
AGACNP
Primary taxonomy
Acute Care Nurse Practitioner 363LA2100X
License number
209011729 IL
Self-reported in NPPES; status is on the state search
Practice location
1611 W Harrison St, Chicago, IL 60612
Phone
(312) 942-5000
Enumerated
Jan 22, 2015
Record last updated
Jan 22, 2015 (not updated in 11 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20160304001039); 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.
Download card Updates feed

Also registered at 1611 W Harrison St

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

  1. Jakob Ackermann, MDSports Medicine (Orthopaedic Surgery) Physician1467340364
  2. Taylor Agate, PA-CPhysician Assistant1871196477
  3. Samer Al-Khudari, M.D.Otolaryngology Physician1699942177
  4. Jeremy Alland, MDSports Medicine (Internal Medicine) Physician1861755035
  5. Howard An, MDOrthopaedic Surgery of the Spine Physician1255310157
  6. Gunnar Andersson, MDOrthopaedic Surgery Physician1154309110

Verify Jennifer Sostak 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 209011729    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.

Is this page about you? You can ask us to correct, restrict or remove it: how.

39% more Medicare Part D claims than the average acute care nurse practitioner in 2024

825 Medicare Part D claims for 168 beneficiaries, against an average of 594 among the 13,133 providers of this specialty who prescribed in Part D. 278 claims were for opioids.

  1. Jennifer Sostak825
  2. Specialty average594

Most prescribed

  1. Meloxicam172 claims
  2. Tramadol Hcl155 claims
  3. Oxycodone Hcl100 claims
  4. Gabapentin98 claims
  5. Pantoprazole Sodium84 claims
  6. Ondansetron Hcl78 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.

Bills Medicare through 2 group practices

  1. Orthomidwest, PLLCChicago, IL
  2. Rci (wrs) LLCCrown Point, IN

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

Acute Care Nurse Practitioner providers in Illinois

There are 639 acute care nurse practitioner records in Illinois.

All 639 in Illinois → Every provider in Chicago →

Other acute care nurse practitioner records in Illinois

  1. Jessica Acosta, APRNChicago, IL1679169015
  2. Cathy Adamson, N.P.Elmhurst, IL1407906126
  3. Kelly Adcock, BSN MSN APNPeoria, IL1386707354
  4. Adeola Adeoye, APNChicago, IL1598103459
  5. Toluwalase AdeyemiChicago, IL1346137635
  6. Maria Agopian, NPElk Grove Village, IL1235407735
  7. Michael Ahart, APNWestmont, IL1346750767
  8. Sydney Ain, RN, AGACNPChicago, IL1043062268
  9. Alison Aldag, AGACNP-BCPeoria, IL1497531800
  10. Anthony AllenChicago, IL1750262234

Common questions

What is Jennifer Sostak, AGACNP's NPI number?

Jennifer Sostak, AGACNP's National Provider Identifier (NPI) is 1174912505, issued on Jan 22, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Jennifer Sostak, AGACNP located?

The NPPES record lists a practice address at 1611 W Harrison St, Chicago, IL, 60612. Phone: (312) 942-5000. Providers update this record themselves, so call before visiting.

How can I verify Jennifer Sostak, AGACNP's license?

NPPES lists Illinois license number 209011729, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.

How much does Jennifer Sostak, AGACNP prescribe under Medicare Part D?

In 2024, Jennifer Sostak, AGACNP had 825 Medicare Part D claims for 168 beneficiaries; the average among acute care nurse practitioner prescribers was 594. 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.