DR. LIA N WRENN MD
NPI 1700128113
Obstetrics & Gynecology in Chicago, IL

Active since March 24, 2013PECOS Enrolled
1645 W JACKSON BLVD STE 310, CHICAGO, IL 60612(312) 942-8060 Get Directions Write a Review

NPPES record last updated: February 28, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Feb 28, 2022, Mar 10, 2020, Jun 29, 2017 and 1 more (4 updates tracked since 2017).

About Dr. Lia N Wrenn Md NPPES

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

DR. LIA N WRENN MD (NPI 1700128113) is an individual obstetrics & gynecology provider in Chicago, Illinois, licensed in Illinois (036155388) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1700128113
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. LIA N WRENNCredential: MD
Location Address1645 W JACKSON BLVD STE 310Chicago, IL 60612-3227
Mailing Address1645 W Jackson Blvd Ste 310Chicago, IL 60612-3227 · (312) 942-8060
Sole ProprietorNo
Enumeration DateMarch 24, 2013
Last NPPES UpdateFebruary 28, 20224 updates tracked since enumeration
NPPES CertifiedFebruary 28, 2022
✔ NPI 1700128113 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Licenses✔ Licensed in IL · 036155388✔ Licensed in VT · 042.0013744✔ Licensed in MA · 279519
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.
1645 W JACKSON BLVD STE 310, Chicago, IL 60612

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Lia N Wrenn Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Lia Wrenn reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Diagnostic Radiology
1620 W HARRISON ST
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • Medicare enrollment name: Rush University Medical Group
  • 2,169 clinicians in this Medicare group

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 60612 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.

Obstetrics & Gynecology
1645 W JACKSON BLVD STE 310
CHICAGO, IL 60612
Obstetrics & Gynecology
1645 W JACKSON BLVD STE 310
CHICAGO, IL 60612
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1645 W JACKSON BLVD STE 310
CHICAGO, IL 60612
Obstetrics & Gynecology
1645 W JACKSON BLVD STE 310
CHICAGO, IL 60612
Registered Nurse (Women's Health Care, Ambulatory)
1645 W JACKSON BLVD STE 310
CHICAGO, IL 60612
Podiatrist
1645 W JACKSON BLVD STE 310
CHICAGO, IL 60612

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 Lia Wrenn's NPI number?

The NPI number for Lia Wrenn is 1700128113. It was assigned to this individual provider in the NPPES registry on March 24, 2013.

Where is Lia Wrenn located?

Lia Wrenn practices at 1645 W Jackson Blvd Ste 310, Chicago, IL 60612. The listed phone number is (312) 942-8060.

What is Lia Wrenn's specialty?

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

Is Lia Wrenn enrolled in Medicare?

Yes. Lia Wrenn is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Lia Wrenn's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lia Wrenn reassigns Medicare benefits to Rush University Medical Center (Chicago, 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 Lia Wrenn'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 Lia Wrenn was last updated on February 28, 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.