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JOANNA NIEWIARA
NPI 1346895372
Nurse Anesthetist, Certified Registered in Chicago, IL

Active since August 06, 2019PECOS EnrolledAccepts Medicare Assignment
251 E HURON ST, CHICAGO, IL 60611(312) 926-2000 Get Directions Write a Review

NPPES record last updated: October 1, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 1, 2024, Sep 27, 2024, Jan 20, 2023 and 2 more (5 updates tracked since 2019).

About Joanna Niewiara NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOANNA NIEWIARA (NPI 1346895372) is an individual nurse anesthetist, certified registered in Chicago, Illinois, licensed in Illinois (209020187) and active in the NPI registry since August 2019. She is enrolled in Medicare PECOS, is affiliated with Elmhurst Memorial Hospital, and maintains 3 additional practice locations.

NPPES Registry Identity

NPI1346895372
Entity TypeIndividualFemale
Primary Taxonomy367500000X
Provider Legal NameJOANNA NIEWIARA
Location Address251 E HURON STChicago, IL 60611
Mailing Address1449 Fox Path LnHoffman Estates, IL 60192-4402 · (630) 930-3119
Phone(312) 926-2000
Sole ProprietorNo
Medical School CMSDuke University School Of MedicineGraduated 2019
Enumeration DateAugust 6, 2019
Last NPPES UpdateOctober 1, 20245 updates tracked since enumeration
NPPES CertifiedOctober 1, 2024
✔ NPI 1346895372 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Anesthetist, Certified RegisteredPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367500000X
License✔ Licensed in IL · 209020187
Definition
(1) A licensed registered nurse with advanced specialty education in anesthesia who, in collaboration with appropriate health care professionals, provides preoperative, intraoperative, and postoperative care to patients and assists in management and resuscitation of critical patients in intensive care, coronary care, and emergency situations. Nurse anesthetists are certified following successful completion of credentials and state licensure review and a national examination directed by the Council on Certification of Nurse Anesthetists. (2) A registered nurse who is qualified by special training to administer anesthesia in collaboration with a physician or dentist and who can assist in the care of patients who are in critical condition.
Also ListedRegistered NurseTaxonomy 163W00000X · License 041421372 (IL)
Also ListedClinical Nurse SpecialistTaxonomy 364S00000X · License 209-020187 (IL)
251 E HURON ST, Chicago, IL 60611
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Secondary Practice Locations 3

Location 13134 N Clark StChicago, IL 60657-4414 · Phone (312) 766-4949 · Fax (312) 766-4908
Location 2251 E Huron StChicago, IL 60611 · Phone (312) 926-2000
Location 3155 E. Brush Hill Rd., Department of AnesthesiaElmhurst, IL 60126-5658 · Phone (331) 221-3521 · Fax (331) 221-3827

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Joanna Niewiara is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID749512606
PECOS Enrollment IDI20191025000010
Eligible to Order & Refer✔ Part B Labs & Imaging– Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

7

Medicare enrollment records show Joanna Niewiara reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Insight Chicago, Inc.
3.3 mi
Internal Medicine
2525 S MICHIGAN AVE
Chicago, IL 60616
  • Reassigned Medicare billing, Illinois enrollment
  • 354 clinicians in this Medicare group
NPI 1881261006 (312) 567-2000
Advocate Health And Hospitals Corp.
3.9 mi
Cardiovascular Disease
3118 N ASHLAND AVE
Chicago, IL 60657
  • Reassigned Medicare billing, Illinois enrollment
  • 4,870 clinicians in this Medicare group
NPI 1487951711 (773) 880-9722
Apollo Medical Group Of Illinois LLC
7.9 mi
Anesthesiology
3034 W PETERSON AVE
Chicago, IL 60659
  • Reassigned Medicare billing, Illinois enrollment
  • 47 clinicians in this Medicare group
NPI 1730934597 (773) 497-1961
North American Partners In Anesthesia (illinois), LLC
8.4 mi
Anesthesiology
3 ERIE CT
Oak Park, IL 60302
  • Reassigned Medicare billing, Illinois enrollment
  • 826 clinicians in this Medicare group
NPI 1699032524 (315) 413-5229
Endeavor Health Medical Group
12 mi
Allergy & Immunology
1000 CENTRAL ST
Evanston, IL 60201
  • Reassigned Medicare billing, Illinois enrollment
  • 4,841 clinicians in this Medicare group
NPI 1497701882 (847) 570-5235
Midwest Anesthesia Providers S.C
256 mi
Anesthesiology
11133 DUNN RD
Saint Louis, MO 63136
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Midwest Anesthesia Providers Sc
  • 253 clinicians in this Medicare group
NPI 1295189082 (865) 293-5676
Northstar Anesthesia Of Illinois, LLC
816 mi
Anesthesiology
2000 E LAMAR BLVD STE 400
Arlington, TX 76006
  • Reassigned Medicare billing, Illinois enrollment
  • 735 clinicians in this Medicare group
NPI 1962822395 (817) 583-7421

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 3

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
116 services109 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
27 services27 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
20 services20 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Elmhurst Memorial Hospital

Acute Care Hospitals · Elmhurst, IL
4/5 CMS rating
OwnershipProprietary
CMS Certification Number140200
Location155 East Brush Hill RoadElmhurst, IL 60126 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARK WANG M.D.
Pathology (Anatomic Pathology & Clinical Pathology)
251 E HURON ST, FEINBERG PAVILION
CHICAGO, IL 60611
Cook County (312) 503-8144
DR. MARLEY ANN DOYLE M/D.
Psychiatry & Neurology (Psychiatry)
251 E HURON ST, GALTER 3-150, C
CHICAGO, IL 60611
Cook County (312) 926-6895
CASSIDY SCHWAB MD
Anesthesiology
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 695-0061
SEONG PARK
Internal Medicine
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
EMMA WALLS GREEVER MD
Emergency Medicine
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
NICOLE ELIZABETH TRUPIANO MD
Dermatology
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
ASHRAF SAMHAN MD
Internal Medicine
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000
DR. SABINA SPIGNER MD, MS, MPH
Obstetrics & Gynecology
251 E HURON ST
CHICAGO, IL 60611
Cook County (312) 926-2000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joanna Niewiara's NPI number?

The NPI number for Joanna Niewiara is 1346895372. It was assigned to this individual provider in the NPPES registry on August 6, 2019.

Where is Joanna Niewiara located?

Joanna Niewiara practices at 251 E Huron St, Chicago, IL 60611. The listed phone number is (312) 926-2000.

What is Joanna Niewiara's specialty?

The primary specialty registered for this NPI is Nurse Anesthetist, Certified Registered with taxonomy code 367500000X.

Is Joanna Niewiara enrolled in Medicare?

Yes. Joanna Niewiara is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Joanna Niewiara's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joanna Niewiara reassigns Medicare benefits to 7 organizations: Insight Chicago, Inc. (Chicago, IL), Advocate Health And Hospitals Corp. (Chicago, IL), Apollo Medical Group Of Illinois LLC (Chicago, IL), North American Partners In Anesthesia (illinois), LLC (Oak Park, IL), Endeavor Health Medical Group (Evanston, IL) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joanna Niewiara's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Joanna Niewiara affiliated with any hospitals?

According to CMS data, Joanna Niewiara is affiliated with Elmhurst Memorial Hospital.

When was this NPI record last updated?

The NPPES record for Joanna Niewiara was last updated on October 1, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.