Katherine Balos Maslar
Primary Care Nurse Practitioner · Westmont, IL
Katherine Balos Maslar is a primary care nurse practitioner with a practice address in Westmont, Illinois, and NPI 1316510639, issued on Jul 23, 2021. Check the license (Illinois 209021141, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Balos Maslar
- Primary taxonomy
- Primary Care Nurse Practitioner 363LP2300X
- License number
- 209021141 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1010 Executive Dr, Westmont, IL 60559
- Phone
- (630) 323-0119
- Enumerated
- Jul 23, 2021
- Record last updated
- Jul 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20210817001861); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest primary care nurse practitioner records → All 250 in Illinois → Look up another NPI →
Also registered at 1010 Executive Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Steven Bardfield, MDPhysical Medicine & Rehabilitation Physician1467493668
- Christa Bielski, DPTPhysical Therapist1871929752
- Jeffrey Bitter, PTPhysical Therapist1568735678
- Itamer BotserSurgical Technologist1225337728
- Laura Box, FNP-BCFamily Nurse Practitioner1770981417
- Sivashankar ChandrasekaranSurgical Assistant1194120568
Verify Katherine Balos Maslar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209021141Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Rush University Medical GroupChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Balos Maslar among 250 primary care nurse practitioner records in Illinois
Katherine Balos Maslar is one of 250 primary care nurse practitioner records with a practice address in Illinois. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 55% of them.
- NPI issued2021 · 55% of these records are older, 37% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2019 · median 2019 among the 141 with a school on file
- Record last updated2021 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP2300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Primary Care Nurse Practitioner providers in Illinois
There are 250 primary care nurse practitioner records in Illinois.
All 250 in Illinois → Every provider in Westmont → Primary Care Nurse Practitioner nationwide →
The 8 primary care nurse practitioner records with the nearest ZIP codes
- Marylouise Osetek, APNNaperville, IL 605631730865353
- Jessy Thomas, NPNaperville, IL 605631538323456
- Dawn Bergin, APRNNaperville, IL 605641245589993
- Anna Raimondi, A.P.N.Sugar Grove, IL 605541588057814
- Lauren Caruso, AGPCNP, DNPRiverside, IL 605461659160539
- Lisa HernandezPlainfield, IL 605441326996760
- Maureen Zamora, APNNaperville, IL 605401356816243
- Foluke Omoyeni, NPPlainfield, IL 605851366985798
Common questions
What is Katherine Balos Maslar's NPI number?
Katherine Balos Maslar's National Provider Identifier (NPI) is 1316510639, issued on Jul 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Balos Maslar located?
The NPPES record lists a practice address at 1010 Executive Dr, Westmont, IL, 60559. Phone: (630) 323-0119. Providers update this record themselves, so call before visiting.
How can I verify Katherine Balos Maslar's license?
NPPES lists Illinois license number 209021141, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity 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.