Leigh Ann Kowalski, D.O.
Obstetrics & Gynecology Physician · Bloomington, IL
Leigh Ann Kowalski, D.O. is an obstetrics & gynecology physician with a practice address in Bloomington, Illinois, and NPI 1427402494, issued on Apr 15, 2016. Check the license (Illinois 036.153468, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Leigh Ann Kowalski
- Credential
- D.O.
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 036.153468 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2111 E Oakland Ave Ste B, Bloomington, IL 61701
- Phone
- (309) 808-3068
- Enumerated
- Apr 15, 2016
- Record last updated
- Nov 17, 2022
- Medicare enrollment
- Enrolled (PECOS I20200910000281); accepts Medicare assignment
- Medical or professional school
- Kansas City University Of Med & Biosciences, College Of Osteo Med, 2016
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 2,062 in Illinois → Look up another NPI →
Also registered at 2111 E Oakland Ave Ste B
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bethany Bradley, CNMAdvanced Practice Midwife1235022542
- Lauren HeidenreichAdvanced Practice Midwife1073490652
- Michaela KaneAdvanced Practice Midwife1205651825
- Stephanie Rutherford, PTPhysical Therapist1588928386
- Charlesetta Wallace, APRN, CNMAdvanced Practice Midwife1114896032
- Brittany Ziller, APNNurse Practitioner1528722089
Verify Leigh Ann Kowalski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036.153468Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
74 Medicare Part D claims for 29 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D.
Most prescribed
- Estradiol23 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.
Industry payments in 2024: $217.34
11 payments; by number, the most common kind was food and beverage; the largest payer was Sumitomo Pharma America, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Advanced Womens Healthcare SCBloomington, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Leigh Ann Kowalski among 2,062 obstetrics & gynecology physician records in Illinois
Leigh Ann Kowalski, D.O. is one of 2,062 obstetrics & gynecology physician records with a practice address in Illinois. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 74% of them.
- NPI issued2016 · 74% of these records are older, 24% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2016 · median 2006 among the 1,168 with a school on file
- Record last updated2022 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Illinois
There are 2,062 obstetrics & gynecology physician records in Illinois.
All 2,062 in Illinois → Every provider in Bloomington → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Rachel Dalton, D.O.Bloomington, IL 617011235360199
- Meng Horng, MDBloomington, IL 617011134129281
- Karla Kossler, M.D.Bloomington, IL 617011780876961
- Daniel Nord, MDBloomington, IL 617011336144955
- Bamidele Ogunleye, M.D.Bloomington, IL 617011831209584
- Barry Slotky, MDBloomington, IL 617011932194834
- Sharon Weaver, M.D.Bloomington, IL 617011215049416
- Richard Wellman, MDBloomington, IL 617011184629701
Common questions
What is Leigh Ann Kowalski, D.O.'s NPI number?
Leigh Ann Kowalski, D.O.'s National Provider Identifier (NPI) is 1427402494, issued on Apr 15, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Leigh Ann Kowalski, D.O. located?
The NPPES record lists a practice address at 2111 E Oakland Ave Ste B, Bloomington, IL, 61701. Phone: (309) 808-3068. Providers update this record themselves, so call before visiting.
How can I verify Leigh Ann Kowalski, D.O.'s license?
NPPES lists Illinois license number 036.153468, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leigh Ann Kowalski, D.O. prescribe under Medicare Part D?
In 2024, Leigh Ann Kowalski, D.O. had 74 Medicare Part D claims for 29 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.
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.