Mary Eileen Twardowski, ANP-BC
Adult Health Nurse Practitioner · Joliet, IL
Mary Eileen Twardowski, ANP-BC is an adult health nurse practitioner with a practice address in Joliet, Illinois, and NPI 1376847707, issued on Dec 28, 2010. Check the license (Illinois 209.008421, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Eileen Twardowski
- Credential
- ANP-BC
- Primary taxonomy
- Adult Health Nurse Practitioner 363LA2200X
- License number
- 209.008421 IL
Self-reported in NPPES; status is on the state search - Practice location
- 3077 W Jefferson St, Joliet, IL 60435
- Phone
- (815) 744-6722
- Enumerated
- Dec 28, 2010
- Record last updated
- Dec 28, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (815) 744-6733
- Entity
- Type 1 · individual
8 nearest adult health nurse practitioner records → All 743 in Illinois → Look up another NPI →
Also registered at 3077 W Jefferson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Mary Eileen Twardowski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209.008421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
62% fewer Medicare Part D claims than the average adult health nurse practitioner in 2024
489 Medicare Part D claims for 56 beneficiaries, against an average of 1,280 among the 16,937 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium62 claims
- Levothyroxine Sodium48 claims
- Gabapentin36 claims
- Furosemide32 claims
- Lisinopril23 claims
- Amiodarone Hcl20 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.
Mary Eileen Twardowski among 743 adult health nurse practitioner records in Illinois
Mary Eileen Twardowski, ANP-BC is one of 743 adult health nurse practitioner records with a practice address in Illinois. 65% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 36% of them.
- NPI issued2010 · 36% of these records are older, 59% newer
- In a Medicare fileYes · 65% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2010 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LA2200X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Adult Health Nurse Practitioner providers in Illinois
There are 743 adult health nurse practitioner records in Illinois.
All 743 in Illinois → Every provider in Joliet → Adult Health Nurse Practitioner nationwide →
The 8 adult health nurse practitioner records with the nearest ZIP codes
- Christina Dabros, NP-CJoliet, IL 604351306124631
- Dolly Agba, NURSE PRACTITIONERJoliet, IL 604331023027869
- Theresa Bucy, APN, NP-CJoliet, IL 604321497060933
- Tasha Horsley, N.P.Joliet, IL 604311003032293
- Elizabeth Ebeywa, DNPHomewood, IL 604301205552114
- Kelly Filip, AGPCNP-BCBolingbrook, IL 604401740778034
- Mary Gibson, APNMatteson, IL 604431699714907
- Murrie Davis, NPHarvey, IL 604261629046107
Common questions
What is Mary Eileen Twardowski, ANP-BC's NPI number?
Mary Eileen Twardowski, ANP-BC's National Provider Identifier (NPI) is 1376847707, issued on Dec 28, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mary Eileen Twardowski, ANP-BC located?
The NPPES record lists a practice address at 3077 W Jefferson St, Joliet, IL, 60435. Phone: (815) 744-6722. Providers update this record themselves, so call before visiting.
How can I verify Mary Eileen Twardowski, ANP-BC's license?
NPPES lists Illinois license number 209.008421, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Eileen Twardowski, ANP-BC prescribe under Medicare Part D?
In 2024, Mary Eileen Twardowski, ANP-BC had 489 Medicare Part D claims for 56 beneficiaries; the average among adult health nurse practitioner prescribers was 1,280. 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.