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MRS. LEIGH ANN KOWALSKI D.O.
NPI 1427402494
Obstetrics & Gynecology in Bloomington, IL

Active since April 15, 2016PECOS EnrolledAccepts Medicare Assignment
2111 E OAKLAND AVE STE B, BLOOMINGTON, IL 61701(309) 808-3068 Get Directions Write a Review

NPPES record last updated: November 17, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mrs. Leigh Ann Kowalski D.o. NPPES

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

MRS. LEIGH ANN KOWALSKI D.O. (NPI 1427402494) is an individual obstetrics & gynecology provider in Bloomington, Illinois, licensed in Illinois (036.153468) and active in the NPI registry since April 2016. She is enrolled in Medicare PECOS, is affiliated with St Joseph Medical Center, and is a graduate of Kansas City University Of Med & Biosciences, College Of Osteo Med (2016).

NPPES Registry Identity

NPI1427402494
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameMRS. LEIGH ANN KOWALSKICredential: D.O.
Location Address2111 E OAKLAND AVE STE BBloomington, IL 61701-5783
Mailing Address530 Ne Glen Oak Ave, 2645Peoria, IL 61637-0001 · (309) 655-4163
Phone(309) 808-3068
Sole ProprietorNo
Medical School CMSKansas City University Of Med & Biosciences, College Of Osteo MedGraduated 2016
Enumeration DateApril 15, 2016
Last NPPES UpdateNovember 17, 2022
NPPES CertifiedNovember 17, 2022
✔ NPI 1427402494 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 · 036.153468
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
2111 E OAKLAND AVE STE B, Bloomington, IL 61701
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter Health, Ambetter Health of Delaware.Insurance ›

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

Mrs. Leigh Ann Kowalski D.o. 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 ID547556417
PECOS Enrollment IDI20200910000281
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

2

Medicare enrollment records show Leigh Ann Kowalski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Advanced Womens Healthcare Sc
Same address
Obstetrics & Gynecology
2111 E OAKLAND AVE, SUITE B
Bloomington, IL 61701
  • Reassigned Medicare billing, Illinois enrollment
  • 8 clinicians in this Medicare group
NPI 1376890426 (309) 808-3068
Osf Multi-Specialty Group
43 mi
Internal Medicine
8600 N STATE ROUTE 91
Peoria, IL 61615
  • Reassigned Medicare billing, Illinois enrollment
  • 2,944 clinicians in this Medicare group
NPI 1922445527 (309) 683-5050

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 2

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.

New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
17 services17 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
15 services12 patients

Hospital Affiliations CMS Care Compare 2

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

St Joseph Medical Center

Acute Care Hospitals · Bloomington, IL
2/5 CMS rating
OwnershipVoluntary non-profit - Church
CMS Certification Number140162
Location2200 E WashingtonBloomington, IL 61701 · Mc Lean County
Emergency services Birthing friendly

Northwestern Medicine Central Dupage Hospital

Acute Care Hospitals · Winfield, IL
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number140242
Location25 North Winfield RoadWinfield, IL 60190 · Du Page County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 61701 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
$127.46 typical visit price
range $54.80 – $168.44
Typical copayment $31.86 (range $13.70 – $42.11)
Most-billed visit code 99204
Established Patient
$68.64 typical visit price
range $17.16 – $136.56
Typical copayment $17.16 (range $4.29 – $34.14)
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.

LAUREN HEIDENREICH
Advanced Practice Midwife
2111 E OAKLAND AVE STE B
BLOOMINGTON, IL 61701
McLean County (309) 808-3068
CHARLESETTA WALLACE APRN, CNM
Advanced Practice Midwife
2111 E OAKLAND AVE STE B
BLOOMINGTON, IL 61701
McLean County (309) 808-3068
MICHAELA R KANE
Advanced Practice Midwife
2111 E OAKLAND AVE STE B
BLOOMINGTON, IL 61701
McLean County (309) 808-3068
BETHANY ANN BRADLEY CNM
Advanced Practice Midwife
2111 E OAKLAND AVE STE B
BLOOMINGTON, IL 61701
McLean County (309) 808-3068
BRITTANY ZILLER APN
Nurse Practitioner
2111 E OAKLAND AVE STE B
BLOOMINGTON, IL 61701
McLean County (309) 808-3068
MRS. STEPHANIE RUTHERFORD PT
Physical Therapist
2111 E OAKLAND AVE STE B
BLOOMINGTON, IL 61701
McLean County (309) 808-3068

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 Leigh Ann Kowalski's NPI number?

The NPI number for Leigh Ann Kowalski is 1427402494. It was assigned to this individual provider in the NPPES registry on April 15, 2016.

Where is Leigh Ann Kowalski located?

Leigh Ann Kowalski practices at 2111 E Oakland Ave Ste B, Bloomington, IL 61701. The listed phone number is (309) 808-3068.

What is Leigh Ann Kowalski's specialty?

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

Is Leigh Ann Kowalski enrolled in Medicare?

Yes. Leigh Ann Kowalski 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 Leigh Ann Kowalski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Leigh Ann Kowalski reassigns Medicare benefits to 2 organizations: Advanced Womens Healthcare Sc (Bloomington, IL) and Osf Multi-Specialty Group (Peoria, IL). 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 Leigh Ann Kowalski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Leigh Ann Kowalski accept?

Health plans from Ambetter Health and Ambetter Health of Delaware list Leigh Ann Kowalski as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Leigh Ann Kowalski affiliated with any hospitals?

According to CMS data, Leigh Ann Kowalski is affiliated with St Joseph Medical Center and Northwestern Medicine Central Dupage Hospital.

When was this NPI record last updated?

The NPPES record for Leigh Ann Kowalski was last updated on November 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.