1. Home
  2. Directory
  3. Illinois
  4. Park Ridge
  5. Obstetrics Gynecology
  6. NPI Profile

MARY PIEKOS
NPI 1851960199
Obstetrics & Gynecology in Park Ridge, IL

Active since June 22, 2021PECOS Enrolled
1875 DEMPSTER ST STE 330, PARK RIDGE, IL 60068(847) 655-8530 Get Directions Write a Review

NPPES record last updated: June 17, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Mary Piekos NPPES

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

MARY PIEKOS (NPI 1851960199) is an individual obstetrics & gynecology provider in Park Ridge, Illinois, licensed in Illinois (125.079390) and active in the NPI registry since June 2021. She is enrolled in Medicare PECOS and is a graduate of Louisiana State University School Of Medicine In New Orleans (2021).

NPPES Registry Identity

NPI1851960199
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMARY PIEKOS
Location Address1875 DEMPSTER ST STE 330Park Ridge, IL 60068-1127
Mailing Address1875 Dempster St Ste 330Park Ridge, IL 60068-1127 · (847) 655-8530
Phone(847) 655-8530
Sole ProprietorYes
Medical School CMSLouisiana State University School Of Medicine In New OrleansGraduated 2021
Enumeration DateJune 22, 2021
Last NPPES UpdateJune 17, 2022
NPPES CertifiedJune 17, 2022
✔ NPI 1851960199 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in IL · 125.079390
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
1875 DEMPSTER ST STE 330, Park Ridge, IL 60068
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Piekos is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID7810457116
PECOS Enrollment IDI20260907000002
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 Reassignment

Medicare enrollment records show Mary Piekos reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Midwest Center For Women's Health Care, Ltd.
11 mi
Obstetrics & Gynecology
2801 LAKESIDE DR STE 209
Bannockburn, IL 60015
  • Reassigned Medicare billing, Illinois enrollment
  • 120 clinicians in this Medicare group
NPI 1447200654 (847) 562-1410

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60068 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 6

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

ALEXANDRA JORDAN DOUGLAS PHELPS MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1875 DEMPSTER ST STE 330
PARK RIDGE, IL 60068
Cook County (847) 655-8530
DR. CUILAN LI MD
Obstetrics & Gynecology
1875 DEMPSTER ST STE 330
PARK RIDGE, IL 60068
Cook County (847) 655-8500
JANET LEE
Obstetrics & Gynecology
1875 DEMPSTER ST STE 330
PARK RIDGE, IL 60068
Cook County (847) 655-8530
AIKATERINA ASSIMACOPOULOS MD
Obstetrics & Gynecology
1875 DEMPSTER ST STE 330
PARK RIDGE, IL 60068
Cook County (847) 655-8530
PAOULA J GUEORGUIEVA MD
Obstetrics & Gynecology
1875 DEMPSTER ST STE 330
PARK RIDGE, IL 60068
Cook County (847) 655-8530
REBECCA ROSSI HENDRICKS DO
Obstetrics & Gynecology
1875 DEMPSTER ST STE 330
PARK RIDGE, IL 60068
Cook County (847) 825-1100

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 Mary Piekos's NPI number?

The NPI number for Mary Piekos is 1851960199. It was assigned to this individual provider in the NPPES registry on June 22, 2021.

Where is Mary Piekos located?

Mary Piekos practices at 1875 Dempster St Ste 330, Park Ridge, IL 60068. The listed phone number is (847) 655-8530.

What is Mary Piekos's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Mary Piekos enrolled in Medicare?

Yes. Mary Piekos is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mary Piekos's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mary Piekos reassigns Medicare benefits to Midwest Center For Women's Health Care, Ltd. (Bannockburn, IL). The 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 Mary Piekos's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Mary Piekos was last updated on June 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.